| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -S -basic-aa -licm -verify-memoryssa < %s | FileCheck %s |
| ; RUN: opt -aa-pipeline=basic-aa -passes='require<opt-remark-emit>,loop-mssa(loop-simplifycfg,licm)' -verify-memoryssa -S < %s | FileCheck %s |
| |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| ; This test represents the following function: |
| ; void test1(int * __restrict__ a, int * __restrict__ b, int &c, int n) { |
| ; for (int i = 0; i < n; ++i) |
| ; if (a[i] > 0) |
| ; a[i] = c*b[i]; |
| ; } |
| ; and we want to hoist the load of %c out of the loop. This can be done only |
| ; because the dereferenceable attribute is on %c. |
| |
| define void @test1(i32* noalias nocapture %a, i32* noalias nocapture readonly %b, i32* nocapture readonly nonnull dereferenceable(4) align 4 %c, i32 %n) #0 { |
| ; CHECK-LABEL: @test1( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[CMP11:%.*]] = icmp sgt i32 [[N:%.*]], 0 |
| ; CHECK-NEXT: br i1 [[CMP11]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]] |
| ; CHECK: for.body.preheader: |
| ; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[C:%.*]], align 4 |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_INC:%.*]] ], [ 0, [[FOR_BODY_PREHEADER]] ] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[TMP1]], 0 |
| ; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN:%.*]], label [[FOR_INC]] |
| ; CHECK: if.then: |
| ; CHECK-NEXT: [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[ARRAYIDX3]], align 4 |
| ; CHECK-NEXT: [[MUL:%.*]] = mul nsw i32 [[TMP2]], [[TMP0]] |
| ; CHECK-NEXT: store i32 [[MUL]], i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: br label [[FOR_INC]] |
| ; CHECK: for.inc: |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], [[N]] |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]] |
| ; CHECK: for.end.loopexit: |
| ; CHECK-NEXT: br label [[FOR_END]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| %cmp11 = icmp sgt i32 %n, 0 |
| br i1 %cmp11, label %for.body, label %for.end |
| |
| for.body: ; preds = %entry, %for.inc |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ] |
| %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv |
| %0 = load i32, i32* %arrayidx, align 4 |
| %cmp1 = icmp sgt i32 %0, 0 |
| br i1 %cmp1, label %if.then, label %for.inc |
| |
| if.then: ; preds = %for.body |
| %1 = load i32, i32* %c, align 4 |
| %arrayidx3 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv |
| %2 = load i32, i32* %arrayidx3, align 4 |
| %mul = mul nsw i32 %2, %1 |
| store i32 %mul, i32* %arrayidx, align 4 |
| br label %for.inc |
| |
| for.inc: ; preds = %for.body, %if.then |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, %n |
| br i1 %exitcond, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.inc, %entry |
| ret void |
| } |
| |
| ; This is the same as @test1, but without the dereferenceable attribute on %c. |
| ; Without this attribute, we should not hoist the load of %c. |
| define void @test2(i32* noalias nocapture %a, i32* noalias nocapture readonly %b, i32* nocapture readonly nonnull %c, i32 %n) #0 { |
| ; CHECK-LABEL: @test2( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[CMP11:%.*]] = icmp sgt i32 [[N:%.*]], 0 |
| ; CHECK-NEXT: br i1 [[CMP11]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]] |
| ; CHECK: for.body.preheader: |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_INC:%.*]] ], [ 0, [[FOR_BODY_PREHEADER]] ] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[TMP0]], 0 |
| ; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN:%.*]], label [[FOR_INC]] |
| ; CHECK: if.then: |
| ; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[C:%.*]], align 4 |
| ; CHECK-NEXT: [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[ARRAYIDX3]], align 4 |
| ; CHECK-NEXT: [[MUL:%.*]] = mul nsw i32 [[TMP2]], [[TMP1]] |
| ; CHECK-NEXT: store i32 [[MUL]], i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: br label [[FOR_INC]] |
| ; CHECK: for.inc: |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], [[N]] |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]] |
| ; CHECK: for.end.loopexit: |
| ; CHECK-NEXT: br label [[FOR_END]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| %cmp11 = icmp sgt i32 %n, 0 |
| br i1 %cmp11, label %for.body, label %for.end |
| |
| for.body: ; preds = %entry, %for.inc |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ] |
| %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv |
| %0 = load i32, i32* %arrayidx, align 4 |
| %cmp1 = icmp sgt i32 %0, 0 |
| br i1 %cmp1, label %if.then, label %for.inc |
| |
| if.then: ; preds = %for.body |
| %1 = load i32, i32* %c, align 4 |
| %arrayidx3 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv |
| %2 = load i32, i32* %arrayidx3, align 4 |
| %mul = mul nsw i32 %2, %1 |
| store i32 %mul, i32* %arrayidx, align 4 |
| br label %for.inc |
| |
| for.inc: ; preds = %for.body, %if.then |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, %n |
| br i1 %exitcond, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.inc, %entry |
| ret void |
| } |
| |
| ; This test represents the following function: |
| ; void test3(int * restrict a, int * restrict b, int c[static 3], int n) { |
| ; for (int i = 0; i < n; ++i) |
| ; if (a[i] > 0) |
| ; a[i] = c[2]*b[i]; |
| ; } |
| ; and we want to hoist the load of c[2] out of the loop. This can be done only |
| ; because the dereferenceable attribute is on %c. |
| define void @test3(i32* noalias nocapture %a, i32* noalias nocapture readonly %b, i32* nocapture readonly dereferenceable(12) align 4 %c, i32 %n) #0 { |
| ; CHECK-LABEL: @test3( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[CMP11:%.*]] = icmp sgt i32 [[N:%.*]], 0 |
| ; CHECK-NEXT: br i1 [[CMP11]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]] |
| ; CHECK: for.body.preheader: |
| ; CHECK-NEXT: [[C2:%.*]] = getelementptr inbounds i32, i32* [[C:%.*]], i64 2 |
| ; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[C2]], align 4 |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_INC:%.*]] ], [ 0, [[FOR_BODY_PREHEADER]] ] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[TMP1]], 0 |
| ; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN:%.*]], label [[FOR_INC]] |
| ; CHECK: if.then: |
| ; CHECK-NEXT: [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[ARRAYIDX3]], align 4 |
| ; CHECK-NEXT: [[MUL:%.*]] = mul nsw i32 [[TMP2]], [[TMP0]] |
| ; CHECK-NEXT: store i32 [[MUL]], i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: br label [[FOR_INC]] |
| ; CHECK: for.inc: |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], [[N]] |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]] |
| ; CHECK: for.end.loopexit: |
| ; CHECK-NEXT: br label [[FOR_END]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| %cmp11 = icmp sgt i32 %n, 0 |
| br i1 %cmp11, label %for.body, label %for.end |
| |
| for.body: ; preds = %entry, %for.inc |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ] |
| %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv |
| %0 = load i32, i32* %arrayidx, align 4 |
| %cmp1 = icmp sgt i32 %0, 0 |
| br i1 %cmp1, label %if.then, label %for.inc |
| |
| if.then: ; preds = %for.body |
| %c2 = getelementptr inbounds i32, i32* %c, i64 2 |
| %1 = load i32, i32* %c2, align 4 |
| %arrayidx3 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv |
| %2 = load i32, i32* %arrayidx3, align 4 |
| %mul = mul nsw i32 %2, %1 |
| store i32 %mul, i32* %arrayidx, align 4 |
| br label %for.inc |
| |
| for.inc: ; preds = %for.body, %if.then |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, %n |
| br i1 %exitcond, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.inc, %entry |
| ret void |
| } |
| |
| ; This is the same as @test3, but with a dereferenceable attribute on %c with a |
| ; size too small to cover c[2] (and so we should not hoist it). |
| define void @test4(i32* noalias nocapture %a, i32* noalias nocapture readonly %b, i32* nocapture readonly dereferenceable(11) %c, i32 %n) #0 { |
| ; CHECK-LABEL: @test4( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[CMP11:%.*]] = icmp sgt i32 [[N:%.*]], 0 |
| ; CHECK-NEXT: br i1 [[CMP11]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]] |
| ; CHECK: for.body.preheader: |
| ; CHECK-NEXT: [[C2:%.*]] = getelementptr inbounds i32, i32* [[C:%.*]], i64 2 |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_INC:%.*]] ], [ 0, [[FOR_BODY_PREHEADER]] ] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[TMP0]], 0 |
| ; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN:%.*]], label [[FOR_INC]] |
| ; CHECK: if.then: |
| ; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[C2]], align 4 |
| ; CHECK-NEXT: [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[ARRAYIDX3]], align 4 |
| ; CHECK-NEXT: [[MUL:%.*]] = mul nsw i32 [[TMP2]], [[TMP1]] |
| ; CHECK-NEXT: store i32 [[MUL]], i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: br label [[FOR_INC]] |
| ; CHECK: for.inc: |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], [[N]] |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]] |
| ; CHECK: for.end.loopexit: |
| ; CHECK-NEXT: br label [[FOR_END]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| %cmp11 = icmp sgt i32 %n, 0 |
| br i1 %cmp11, label %for.body, label %for.end |
| |
| for.body: ; preds = %entry, %for.inc |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ] |
| %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv |
| %0 = load i32, i32* %arrayidx, align 4 |
| %cmp1 = icmp sgt i32 %0, 0 |
| br i1 %cmp1, label %if.then, label %for.inc |
| |
| if.then: ; preds = %for.body |
| %c2 = getelementptr inbounds i32, i32* %c, i64 2 |
| %1 = load i32, i32* %c2, align 4 |
| %arrayidx3 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv |
| %2 = load i32, i32* %arrayidx3, align 4 |
| %mul = mul nsw i32 %2, %1 |
| store i32 %mul, i32* %arrayidx, align 4 |
| br label %for.inc |
| |
| for.inc: ; preds = %for.body, %if.then |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, %n |
| br i1 %exitcond, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.inc, %entry |
| ret void |
| } |
| |
| ; This test represents the following function: |
| ; void test1(int * __restrict__ a, int *b, int &c, int n) { |
| ; if (c != null) |
| ; for (int i = 0; i < n; ++i) |
| ; if (a[i] > 0) |
| ; a[i] = c*b[i]; |
| ; } |
| ; and we want to hoist the load of %c out of the loop. This can be done only |
| ; because the dereferenceable_or_null attribute is on %c and there is a null |
| ; check on %c. |
| define void @test5(i32* noalias %a, i32* %b, i32* dereferenceable_or_null(4) align 4 %c, i32 %n) #0 { |
| ; CHECK-LABEL: @test5( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[NOT_NULL:%.*]] = icmp ne i32* [[C:%.*]], null |
| ; CHECK-NEXT: br i1 [[NOT_NULL]], label [[NOT_NULL:%.*]], label [[FOR_END:%.*]] |
| ; CHECK: not.null: |
| ; CHECK-NEXT: [[CMP11:%.*]] = icmp sgt i32 [[N:%.*]], 0 |
| ; CHECK-NEXT: br i1 [[CMP11]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END]] |
| ; CHECK: for.body.preheader: |
| ; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[C]], align 4 |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_INC:%.*]] ], [ 0, [[FOR_BODY_PREHEADER]] ] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[TMP1]], 0 |
| ; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN:%.*]], label [[FOR_INC]] |
| ; CHECK: if.then: |
| ; CHECK-NEXT: [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[ARRAYIDX3]], align 4 |
| ; CHECK-NEXT: [[MUL:%.*]] = mul nsw i32 [[TMP2]], [[TMP0]] |
| ; CHECK-NEXT: store i32 [[MUL]], i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: br label [[FOR_INC]] |
| ; CHECK: for.inc: |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], [[N]] |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]] |
| ; CHECK: for.end.loopexit: |
| ; CHECK-NEXT: br label [[FOR_END]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| %not_null = icmp ne i32* %c, null |
| br i1 %not_null, label %not.null, label %for.end |
| |
| not.null: |
| %cmp11 = icmp sgt i32 %n, 0 |
| br i1 %cmp11, label %for.body, label %for.end |
| |
| for.body: ; preds = %not.null, %for.inc |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %not.null ] |
| %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv |
| %0 = load i32, i32* %arrayidx, align 4 |
| %cmp1 = icmp sgt i32 %0, 0 |
| br i1 %cmp1, label %if.then, label %for.inc |
| |
| if.then: ; preds = %for.body |
| %1 = load i32, i32* %c, align 4 |
| %arrayidx3 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv |
| %2 = load i32, i32* %arrayidx3, align 4 |
| %mul = mul nsw i32 %2, %1 |
| store i32 %mul, i32* %arrayidx, align 4 |
| br label %for.inc |
| |
| for.inc: ; preds = %for.body, %if.then |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, %n |
| br i1 %exitcond, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.inc, %entry, %not.null |
| ret void |
| } |
| |
| ; This is the same as @test5, but without the null check on %c. |
| ; Without this check, we should not hoist the load of %c. |
| |
| ; This test case has an icmp on c but the use of this comparison is |
| ; not a branch. |
| define i1 @test6(i32* noalias %a, i32* %b, i32* dereferenceable_or_null(4) %c, i32 %n) #0 { |
| ; CHECK-LABEL: @test6( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[NOT_NULL:%.*]] = icmp ne i32* [[C:%.*]], null |
| ; CHECK-NEXT: [[CMP11:%.*]] = icmp sgt i32 [[N:%.*]], 0 |
| ; CHECK-NEXT: br i1 [[CMP11]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]] |
| ; CHECK: for.body.preheader: |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_INC:%.*]] ], [ 0, [[FOR_BODY_PREHEADER]] ] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[TMP0]], 0 |
| ; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN:%.*]], label [[FOR_INC]] |
| ; CHECK: if.then: |
| ; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[C]], align 4 |
| ; CHECK-NEXT: [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[ARRAYIDX3]], align 4 |
| ; CHECK-NEXT: [[MUL:%.*]] = mul nsw i32 [[TMP2]], [[TMP1]] |
| ; CHECK-NEXT: store i32 [[MUL]], i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: br label [[FOR_INC]] |
| ; CHECK: for.inc: |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], [[N]] |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]] |
| ; CHECK: for.end.loopexit: |
| ; CHECK-NEXT: br label [[FOR_END]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: ret i1 [[NOT_NULL]] |
| ; |
| entry: |
| %not_null = icmp ne i32* %c, null |
| %cmp11 = icmp sgt i32 %n, 0 |
| br i1 %cmp11, label %for.body, label %for.end |
| |
| for.body: ; preds = %entry, %for.inc |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ] |
| %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv |
| %0 = load i32, i32* %arrayidx, align 4 |
| %cmp1 = icmp sgt i32 %0, 0 |
| br i1 %cmp1, label %if.then, label %for.inc |
| |
| if.then: ; preds = %for.body |
| %1 = load i32, i32* %c, align 4 |
| %arrayidx3 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv |
| %2 = load i32, i32* %arrayidx3, align 4 |
| %mul = mul nsw i32 %2, %1 |
| store i32 %mul, i32* %arrayidx, align 4 |
| br label %for.inc |
| |
| for.inc: ; preds = %for.body, %if.then |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, %n |
| br i1 %exitcond, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.inc, %entry |
| ret i1 %not_null |
| } |
| |
| ; This test represents the following function: |
| ; void test1(int * __restrict__ a, int *b, int **cptr, int n) { |
| ; c = *cptr; |
| ; for (int i = 0; i < n; ++i) |
| ; if (a[i] > 0) |
| ; a[i] = (*c)*b[i]; |
| ; } |
| ; and we want to hoist the load of %c out of the loop. This can be done only |
| ; because the dereferenceable meatdata on the c = *cptr load. |
| define void @test7(i32* noalias %a, i32* %b, i32** %cptr, i32 %n) #0 { |
| ; CHECK-LABEL: @test7( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[C:%.*]] = load i32*, i32** [[CPTR:%.*]], align 8, !dereferenceable !0, !align !0 |
| ; CHECK-NEXT: [[CMP11:%.*]] = icmp sgt i32 [[N:%.*]], 0 |
| ; CHECK-NEXT: br i1 [[CMP11]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]] |
| ; CHECK: for.body.preheader: |
| ; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[C]], align 4 |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_INC:%.*]] ], [ 0, [[FOR_BODY_PREHEADER]] ] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[TMP1]], 0 |
| ; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN:%.*]], label [[FOR_INC]] |
| ; CHECK: if.then: |
| ; CHECK-NEXT: [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[ARRAYIDX3]], align 4 |
| ; CHECK-NEXT: [[MUL:%.*]] = mul nsw i32 [[TMP2]], [[TMP0]] |
| ; CHECK-NEXT: store i32 [[MUL]], i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: br label [[FOR_INC]] |
| ; CHECK: for.inc: |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], [[N]] |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]] |
| ; CHECK: for.end.loopexit: |
| ; CHECK-NEXT: br label [[FOR_END]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| %c = load i32*, i32** %cptr, !dereferenceable !0, !align !{i64 4} |
| %cmp11 = icmp sgt i32 %n, 0 |
| br i1 %cmp11, label %for.body, label %for.end |
| |
| for.body: ; preds = %entry, %for.inc |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ] |
| %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv |
| %0 = load i32, i32* %arrayidx, align 4 |
| %cmp1 = icmp sgt i32 %0, 0 |
| br i1 %cmp1, label %if.then, label %for.inc |
| |
| if.then: ; preds = %for.body |
| %1 = load i32, i32* %c, align 4 |
| %arrayidx3 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv |
| %2 = load i32, i32* %arrayidx3, align 4 |
| %mul = mul nsw i32 %2, %1 |
| store i32 %mul, i32* %arrayidx, align 4 |
| br label %for.inc |
| |
| for.inc: ; preds = %for.body, %if.then |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, %n |
| br i1 %exitcond, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.inc, %entry |
| ret void |
| } |
| |
| ; This test represents the following function: |
| ; void test1(int * __restrict__ a, int *b, int **cptr, int n) { |
| ; c = *cptr; |
| ; if (c != null) |
| ; for (int i = 0; i < n; ++i) |
| ; if (a[i] > 0) |
| ; a[i] = (*c)*b[i]; |
| ; } |
| ; and we want to hoist the load of %c out of the loop. This can be done only |
| ; because the dereferenceable_or_null meatdata on the c = *cptr load and there |
| ; is a null check on %c. |
| define void @test8(i32* noalias %a, i32* %b, i32** %cptr, i32 %n) #0 { |
| ; CHECK-LABEL: @test8( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[C:%.*]] = load i32*, i32** [[CPTR:%.*]], align 8, !dereferenceable_or_null !0, !align !0 |
| ; CHECK-NEXT: [[NOT_NULL:%.*]] = icmp ne i32* [[C]], null |
| ; CHECK-NEXT: br i1 [[NOT_NULL]], label [[NOT_NULL:%.*]], label [[FOR_END:%.*]] |
| ; CHECK: not.null: |
| ; CHECK-NEXT: [[CMP11:%.*]] = icmp sgt i32 [[N:%.*]], 0 |
| ; CHECK-NEXT: br i1 [[CMP11]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END]] |
| ; CHECK: for.body.preheader: |
| ; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[C]], align 4 |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_INC:%.*]] ], [ 0, [[FOR_BODY_PREHEADER]] ] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[TMP1]], 0 |
| ; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN:%.*]], label [[FOR_INC]] |
| ; CHECK: if.then: |
| ; CHECK-NEXT: [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[ARRAYIDX3]], align 4 |
| ; CHECK-NEXT: [[MUL:%.*]] = mul nsw i32 [[TMP2]], [[TMP0]] |
| ; CHECK-NEXT: store i32 [[MUL]], i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: br label [[FOR_INC]] |
| ; CHECK: for.inc: |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], [[N]] |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]] |
| ; CHECK: for.end.loopexit: |
| ; CHECK-NEXT: br label [[FOR_END]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| %c = load i32*, i32** %cptr, !dereferenceable_or_null !0, !align !{i64 4} |
| %not_null = icmp ne i32* %c, null |
| br i1 %not_null, label %not.null, label %for.end |
| |
| not.null: |
| %cmp11 = icmp sgt i32 %n, 0 |
| br i1 %cmp11, label %for.body, label %for.end |
| |
| for.body: ; preds = %not.null, %for.inc |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %not.null ] |
| %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv |
| %0 = load i32, i32* %arrayidx, align 4 |
| %cmp1 = icmp sgt i32 %0, 0 |
| br i1 %cmp1, label %if.then, label %for.inc |
| |
| if.then: ; preds = %for.body |
| %1 = load i32, i32* %c, align 4 |
| %arrayidx3 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv |
| %2 = load i32, i32* %arrayidx3, align 4 |
| %mul = mul nsw i32 %2, %1 |
| store i32 %mul, i32* %arrayidx, align 4 |
| br label %for.inc |
| |
| for.inc: ; preds = %for.body, %if.then |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, %n |
| br i1 %exitcond, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.inc, %entry, %not.null |
| ret void |
| } |
| |
| ; This is the same as @test8, but without the null check on %c. |
| ; Without this check, we should not hoist the load of %c. |
| define void @test9(i32* noalias %a, i32* %b, i32** %cptr, i32 %n) #0 { |
| ; CHECK-LABEL: @test9( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[C:%.*]] = load i32*, i32** [[CPTR:%.*]], align 8, !dereferenceable_or_null !0 |
| ; CHECK-NEXT: [[CMP11:%.*]] = icmp sgt i32 [[N:%.*]], 0 |
| ; CHECK-NEXT: br i1 [[CMP11]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]] |
| ; CHECK: for.body.preheader: |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_INC:%.*]] ], [ 0, [[FOR_BODY_PREHEADER]] ] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[TMP0]], 0 |
| ; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN:%.*]], label [[FOR_INC]] |
| ; CHECK: if.then: |
| ; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[C]], align 4 |
| ; CHECK-NEXT: [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[ARRAYIDX3]], align 4 |
| ; CHECK-NEXT: [[MUL:%.*]] = mul nsw i32 [[TMP2]], [[TMP1]] |
| ; CHECK-NEXT: store i32 [[MUL]], i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: br label [[FOR_INC]] |
| ; CHECK: for.inc: |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], [[N]] |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]] |
| ; CHECK: for.end.loopexit: |
| ; CHECK-NEXT: br label [[FOR_END]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| %c = load i32*, i32** %cptr, !dereferenceable_or_null !0 |
| %cmp11 = icmp sgt i32 %n, 0 |
| br i1 %cmp11, label %for.body, label %for.end |
| |
| for.body: ; preds = %entry, %for.inc |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ] |
| %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv |
| %0 = load i32, i32* %arrayidx, align 4 |
| %cmp1 = icmp sgt i32 %0, 0 |
| br i1 %cmp1, label %if.then, label %for.inc |
| |
| if.then: ; preds = %for.body |
| %1 = load i32, i32* %c, align 4 |
| %arrayidx3 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv |
| %2 = load i32, i32* %arrayidx3, align 4 |
| %mul = mul nsw i32 %2, %1 |
| store i32 %mul, i32* %arrayidx, align 4 |
| br label %for.inc |
| |
| for.inc: ; preds = %for.body, %if.then |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, %n |
| br i1 %exitcond, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.inc, %entry |
| ret void |
| } |
| |
| ; In this test we should be able to only hoist load from %cptr. We can't hoist |
| ; load from %c because it's dereferenceability can depend on %cmp1 condition. |
| ; By moving it out of the loop we break this dependency and can not rely |
| ; on the dereferenceability anymore. |
| ; In other words this test checks that we strip dereferenceability metadata |
| ; after hoisting an instruction. |
| define void @test10(i32* noalias %a, i32* %b, i32** dereferenceable(8) align 8 %cptr, i32 %n) #0 { |
| ; CHECK-LABEL: @test10( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[CMP11:%.*]] = icmp sgt i32 [[N:%.*]], 0 |
| ; CHECK-NEXT: br i1 [[CMP11]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]] |
| ; CHECK: for.body.preheader: |
| ; CHECK-NEXT: [[C:%.*]] = load i32*, i32** [[CPTR:%.*]], align 8 |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_INC:%.*]] ], [ 0, [[FOR_BODY_PREHEADER]] ] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[TMP0]], 0 |
| ; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN:%.*]], label [[FOR_INC]] |
| ; CHECK: if.then: |
| ; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[C]], align 4 |
| ; CHECK-NEXT: [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[ARRAYIDX3]], align 4 |
| ; CHECK-NEXT: [[MUL:%.*]] = mul nsw i32 [[TMP2]], [[TMP1]] |
| ; CHECK-NEXT: store i32 [[MUL]], i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: br label [[FOR_INC]] |
| ; CHECK: for.inc: |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], [[N]] |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]] |
| ; CHECK: for.end.loopexit: |
| ; CHECK-NEXT: br label [[FOR_END]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| %cmp11 = icmp sgt i32 %n, 0 |
| br i1 %cmp11, label %for.body, label %for.end |
| |
| for.body: ; preds = %entry, %for.inc |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ] |
| %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv |
| %0 = load i32, i32* %arrayidx, align 4 |
| %cmp1 = icmp sgt i32 %0, 0 |
| br i1 %cmp1, label %if.then, label %for.inc |
| |
| if.then: ; preds = %for.body |
| %c = load i32*, i32** %cptr, !dereferenceable !0 |
| %1 = load i32, i32* %c, align 4 |
| %arrayidx3 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv |
| %2 = load i32, i32* %arrayidx3, align 4 |
| %mul = mul nsw i32 %2, %1 |
| store i32 %mul, i32* %arrayidx, align 4 |
| br label %for.inc |
| |
| for.inc: ; preds = %for.body, %if.then |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, %n |
| br i1 %exitcond, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.inc, %entry |
| ret void |
| } |
| |
| define void @test11(i32* noalias %a, i32* %b, i32** dereferenceable(8) %cptr, i32 %n) #0 { |
| ; CHECK-LABEL: @test11( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[CMP11:%.*]] = icmp sgt i32 [[N:%.*]], 0 |
| ; CHECK-NEXT: br i1 [[CMP11]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]] |
| ; CHECK: for.body.preheader: |
| ; CHECK-NEXT: [[C:%.*]] = load i32*, i32** [[CPTR:%.*]], align 8, !dereferenceable !0 |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_INC:%.*]] ], [ 0, [[FOR_BODY_PREHEADER]] ] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[TMP0]], 0 |
| ; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN:%.*]], label [[FOR_INC]] |
| ; CHECK: if.then: |
| ; CHECK-NEXT: [[D:%.*]] = load i32, i32* [[C]], align 4 |
| ; CHECK-NEXT: [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[E:%.*]] = load i32, i32* [[ARRAYIDX3]], align 4 |
| ; CHECK-NEXT: [[MUL:%.*]] = mul nsw i32 [[E]], [[D]] |
| ; CHECK-NEXT: store i32 [[MUL]], i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: br label [[FOR_INC]] |
| ; CHECK: for.inc: |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], [[N]] |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]] |
| ; CHECK: for.end.loopexit: |
| ; CHECK-NEXT: br label [[FOR_END]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| %cmp11 = icmp sgt i32 %n, 0 |
| br i1 %cmp11, label %for.body, label %for.end |
| |
| |
| |
| for.body: ; preds = %entry, %for.inc |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ] |
| %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv |
| %0 = load i32, i32* %arrayidx, align 4 |
| %cmp1 = icmp sgt i32 %0, 0 |
| %c = load i32*, i32** %cptr, !dereferenceable !0 |
| br i1 %cmp1, label %if.then, label %for.inc |
| |
| if.then: ; preds = %for.body |
| %d = load i32, i32* %c, align 4 |
| %arrayidx3 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv |
| %e = load i32, i32* %arrayidx3, align 4 |
| %mul = mul nsw i32 %e, %d |
| store i32 %mul, i32* %arrayidx, align 4 |
| br label %for.inc |
| |
| for.inc: ; preds = %for.body, %if.then |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, %n |
| br i1 %exitcond, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.inc, %entry |
| ret void |
| } |
| |
| declare void @llvm.experimental.guard(i1, ...) |
| |
| ; Prove non-null ness of %c via a guard, not a branch. |
| define void @test12(i32* noalias %a, i32* %b, i32* dereferenceable_or_null(4) align 4 %c, i32 %n) #0 { |
| ; CHECK-LABEL: @test12( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[NOT_NULL:%.*]] = icmp ne i32* [[C:%.*]], null |
| ; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[NOT_NULL]]) [ "deopt"() ] |
| ; CHECK-NEXT: [[CMP11:%.*]] = icmp sgt i32 [[N:%.*]], 0 |
| ; CHECK-NEXT: br i1 [[CMP11]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]] |
| ; CHECK: for.body.preheader: |
| ; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[C]], align 4 |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_INC:%.*]] ], [ 0, [[FOR_BODY_PREHEADER]] ] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[TMP1]], 0 |
| ; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN:%.*]], label [[FOR_INC]] |
| ; CHECK: if.then: |
| ; CHECK-NEXT: [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[ARRAYIDX3]], align 4 |
| ; CHECK-NEXT: [[MUL:%.*]] = mul nsw i32 [[TMP2]], [[TMP0]] |
| ; CHECK-NEXT: store i32 [[MUL]], i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: br label [[FOR_INC]] |
| ; CHECK: for.inc: |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], [[N]] |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]] |
| ; CHECK: for.end.loopexit: |
| ; CHECK-NEXT: br label [[FOR_END]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| %not_null = icmp ne i32* %c, null |
| call void(i1, ...) @llvm.experimental.guard(i1 %not_null) [ "deopt"() ] |
| %cmp11 = icmp sgt i32 %n, 0 |
| br i1 %cmp11, label %for.body, label %for.end |
| |
| |
| |
| for.body: ; preds = %entry, %for.inc |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ] |
| %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv |
| %0 = load i32, i32* %arrayidx, align 4 |
| %cmp1 = icmp sgt i32 %0, 0 |
| br i1 %cmp1, label %if.then, label %for.inc |
| |
| if.then: ; preds = %for.body |
| %1 = load i32, i32* %c, align 4 |
| %arrayidx3 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv |
| %2 = load i32, i32* %arrayidx3, align 4 |
| %mul = mul nsw i32 %2, %1 |
| store i32 %mul, i32* %arrayidx, align 4 |
| br label %for.inc |
| |
| for.inc: ; preds = %for.body, %if.then |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, %n |
| br i1 %exitcond, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.inc, %entry, %entry |
| ret void |
| } |
| |
| ; Like @test12, but has a post-dominating guard, which cannot be used |
| ; to prove %c is nonnull at the point of the load. |
| define void @test13(i32* noalias %a, i32* %b, i32* dereferenceable_or_null(4) %c, i32 %n) #0 { |
| ; CHECK-LABEL: @test13( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[NOT_NULL:%.*]] = icmp ne i32* [[C:%.*]], null |
| ; CHECK-NEXT: [[CMP11:%.*]] = icmp sgt i32 [[N:%.*]], 0 |
| ; CHECK-NEXT: br i1 [[CMP11]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]] |
| ; CHECK: for.body.preheader: |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_INC:%.*]] ], [ 0, [[FOR_BODY_PREHEADER]] ] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[TMP0]], 0 |
| ; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN:%.*]], label [[FOR_INC]] |
| ; CHECK: if.then: |
| ; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[C]], align 4 |
| ; CHECK-NEXT: [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[ARRAYIDX3]], align 4 |
| ; CHECK-NEXT: [[MUL:%.*]] = mul nsw i32 [[TMP2]], [[TMP1]] |
| ; CHECK-NEXT: store i32 [[MUL]], i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: br label [[FOR_INC]] |
| ; CHECK: for.inc: |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], [[N]] |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]] |
| ; CHECK: for.end.loopexit: |
| ; CHECK-NEXT: br label [[FOR_END]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[NOT_NULL]]) [ "deopt"() ] |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| %not_null = icmp ne i32* %c, null |
| %cmp11 = icmp sgt i32 %n, 0 |
| br i1 %cmp11, label %for.body, label %for.end |
| |
| |
| for.body: ; preds = %entry, %for.inc |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ] |
| %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv |
| %0 = load i32, i32* %arrayidx, align 4 |
| %cmp1 = icmp sgt i32 %0, 0 |
| br i1 %cmp1, label %if.then, label %for.inc |
| |
| if.then: ; preds = %for.body |
| %1 = load i32, i32* %c, align 4 |
| %arrayidx3 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv |
| %2 = load i32, i32* %arrayidx3, align 4 |
| %mul = mul nsw i32 %2, %1 |
| store i32 %mul, i32* %arrayidx, align 4 |
| br label %for.inc |
| |
| for.inc: ; preds = %for.body, %if.then |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, %n |
| br i1 %exitcond, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.inc, %entry, %entry |
| call void(i1, ...) @llvm.experimental.guard(i1 %not_null) [ "deopt"() ] |
| ret void |
| } |
| |
| ; Check that branch by condition "null check AND something" allows to hoist the |
| ; load. |
| define void @test14(i32* noalias %a, i32* %b, i32* dereferenceable_or_null(4) align 4 %c, i32 %n, i1 %dummy_cond) #0 { |
| ; CHECK-LABEL: @test14( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[NOT_NULL:%.*]] = icmp ne i32* [[C:%.*]], null |
| ; CHECK-NEXT: [[DUMMY_AND:%.*]] = and i1 [[NOT_NULL]], [[DUMMY_COND:%.*]] |
| ; CHECK-NEXT: br i1 [[DUMMY_AND]], label [[NOT_NULL:%.*]], label [[FOR_END:%.*]] |
| ; CHECK: not.null: |
| ; CHECK-NEXT: [[CMP11:%.*]] = icmp sgt i32 [[N:%.*]], 0 |
| ; CHECK-NEXT: br i1 [[CMP11]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END]] |
| ; CHECK: for.body.preheader: |
| ; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[C]], align 4 |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_INC:%.*]] ], [ 0, [[FOR_BODY_PREHEADER]] ] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[TMP1]], 0 |
| ; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN:%.*]], label [[FOR_INC]] |
| ; CHECK: if.then: |
| ; CHECK-NEXT: [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[ARRAYIDX3]], align 4 |
| ; CHECK-NEXT: [[MUL:%.*]] = mul nsw i32 [[TMP2]], [[TMP0]] |
| ; CHECK-NEXT: store i32 [[MUL]], i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: br label [[FOR_INC]] |
| ; CHECK: for.inc: |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], [[N]] |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]] |
| ; CHECK: for.end.loopexit: |
| ; CHECK-NEXT: br label [[FOR_END]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: ret void |
| ; |
| |
| entry: |
| %not_null = icmp ne i32* %c, null |
| %dummy_and = and i1 %not_null, %dummy_cond |
| br i1 %dummy_and, label %not.null, label %for.end |
| |
| not.null: |
| %cmp11 = icmp sgt i32 %n, 0 |
| br i1 %cmp11, label %for.body, label %for.end |
| |
| for.body: ; preds = %not.null, %for.inc |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %not.null ] |
| %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv |
| %0 = load i32, i32* %arrayidx, align 4 |
| %cmp1 = icmp sgt i32 %0, 0 |
| br i1 %cmp1, label %if.then, label %for.inc |
| |
| if.then: ; preds = %for.body |
| %1 = load i32, i32* %c, align 4 |
| %arrayidx3 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv |
| %2 = load i32, i32* %arrayidx3, align 4 |
| %mul = mul nsw i32 %2, %1 |
| store i32 %mul, i32* %arrayidx, align 4 |
| br label %for.inc |
| |
| for.inc: ; preds = %for.body, %if.then |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, %n |
| br i1 %exitcond, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.inc, %entry, %not.null |
| ret void |
| } |
| |
| ; Check that guard by condition "null check AND something" allows to hoist the |
| ; load. |
| define void @test15(i32* noalias %a, i32* %b, i32* dereferenceable_or_null(4) align 4 %c, i32 %n, i1 %dummy_cond) #0 { |
| ; CHECK-LABEL: @test15( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[NOT_NULL:%.*]] = icmp ne i32* [[C:%.*]], null |
| ; CHECK-NEXT: [[DUMMY_AND:%.*]] = and i1 [[NOT_NULL]], [[DUMMY_COND:%.*]] |
| ; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[DUMMY_AND]]) [ "deopt"() ] |
| ; CHECK-NEXT: [[CMP11:%.*]] = icmp sgt i32 [[N:%.*]], 0 |
| ; CHECK-NEXT: br i1 [[CMP11]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]] |
| ; CHECK: for.body.preheader: |
| ; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[C]], align 4 |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_INC:%.*]] ], [ 0, [[FOR_BODY_PREHEADER]] ] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[TMP1]], 0 |
| ; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN:%.*]], label [[FOR_INC]] |
| ; CHECK: if.then: |
| ; CHECK-NEXT: [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[ARRAYIDX3]], align 4 |
| ; CHECK-NEXT: [[MUL:%.*]] = mul nsw i32 [[TMP2]], [[TMP0]] |
| ; CHECK-NEXT: store i32 [[MUL]], i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: br label [[FOR_INC]] |
| ; CHECK: for.inc: |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], [[N]] |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]] |
| ; CHECK: for.end.loopexit: |
| ; CHECK-NEXT: br label [[FOR_END]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: ret void |
| ; |
| |
| entry: |
| %not_null = icmp ne i32* %c, null |
| %dummy_and = and i1 %not_null, %dummy_cond |
| call void(i1, ...) @llvm.experimental.guard(i1 %dummy_and) [ "deopt"() ] |
| %cmp11 = icmp sgt i32 %n, 0 |
| br i1 %cmp11, label %for.body, label %for.end |
| |
| for.body: ; preds = %entry, %for.inc |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ] |
| %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv |
| %0 = load i32, i32* %arrayidx, align 4 |
| %cmp1 = icmp sgt i32 %0, 0 |
| br i1 %cmp1, label %if.then, label %for.inc |
| |
| if.then: ; preds = %for.body |
| %1 = load i32, i32* %c, align 4 |
| %arrayidx3 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv |
| %2 = load i32, i32* %arrayidx3, align 4 |
| %mul = mul nsw i32 %2, %1 |
| store i32 %mul, i32* %arrayidx, align 4 |
| br label %for.inc |
| |
| for.inc: ; preds = %for.body, %if.then |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, %n |
| br i1 %exitcond, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.inc, %entry |
| ret void |
| } |
| |
| ; Ensure that (c == null && other_cond) does not automatically mean that c is |
| ; non-null in false branch. So the condition ((c == null && other_cond) == false) |
| ; is not sufficient to conclude that c != null. |
| define void @test16(i32* noalias %a, i32* %b, i32* dereferenceable_or_null(4) %c, i32 %n, i1 %dummy_cond) #0 { |
| ; CHECK-LABEL: @test16( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[NOT_NULL:%.*]] = icmp eq i32* [[C:%.*]], null |
| ; CHECK-NEXT: [[DUMMY_AND:%.*]] = and i1 [[NOT_NULL]], [[DUMMY_COND:%.*]] |
| ; CHECK-NEXT: br i1 [[DUMMY_AND]], label [[FOR_END:%.*]], label [[NOT_NULL:%.*]] |
| ; CHECK: not.null: |
| ; CHECK-NEXT: [[CMP11:%.*]] = icmp sgt i32 [[N:%.*]], 0 |
| ; CHECK-NEXT: br i1 [[CMP11]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END]] |
| ; CHECK: for.body.preheader: |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_INC:%.*]] ], [ 0, [[FOR_BODY_PREHEADER]] ] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[TMP0]], 0 |
| ; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN:%.*]], label [[FOR_INC]] |
| ; CHECK: if.then: |
| ; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[C]], align 4 |
| ; CHECK-NEXT: [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[ARRAYIDX3]], align 4 |
| ; CHECK-NEXT: [[MUL:%.*]] = mul nsw i32 [[TMP2]], [[TMP1]] |
| ; CHECK-NEXT: store i32 [[MUL]], i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: br label [[FOR_INC]] |
| ; CHECK: for.inc: |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], [[N]] |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]] |
| ; CHECK: for.end.loopexit: |
| ; CHECK-NEXT: br label [[FOR_END]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: ret void |
| ; |
| |
| entry: |
| %not_null = icmp eq i32* %c, null |
| %dummy_and = and i1 %not_null, %dummy_cond |
| br i1 %dummy_and, label %for.end, label %not.null |
| |
| not.null: |
| %cmp11 = icmp sgt i32 %n, 0 |
| br i1 %cmp11, label %for.body, label %for.end |
| |
| for.body: ; preds = %not.null, %for.inc |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %not.null ] |
| %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv |
| %0 = load i32, i32* %arrayidx, align 4 |
| %cmp1 = icmp sgt i32 %0, 0 |
| br i1 %cmp1, label %if.then, label %for.inc |
| |
| if.then: ; preds = %for.body |
| %1 = load i32, i32* %c, align 4 |
| %arrayidx3 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv |
| %2 = load i32, i32* %arrayidx3, align 4 |
| %mul = mul nsw i32 %2, %1 |
| store i32 %mul, i32* %arrayidx, align 4 |
| br label %for.inc |
| |
| for.inc: ; preds = %for.body, %if.then |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, %n |
| br i1 %exitcond, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.inc, %entry, %not.null |
| ret void |
| } |
| |
| ; Ensure that (c == null && other_cond) does not automatically mean that c is |
| ; non-null in false branch. So the condition ((c == null && other_cond) == false) |
| ; is not sufficient to conclude that c != null. |
| define void @test17(i32* noalias %a, i32* %b, i32* dereferenceable_or_null(4) %c, i32 %n, i1 %dummy_cond) #0 { |
| ; CHECK-LABEL: @test17( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[NOT_NULL:%.*]] = icmp eq i32* [[C:%.*]], null |
| ; CHECK-NEXT: [[DUMMY_AND:%.*]] = and i1 [[NOT_NULL]], [[DUMMY_COND:%.*]] |
| ; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[DUMMY_AND]]) [ "deopt"() ] |
| ; CHECK-NEXT: [[CMP11:%.*]] = icmp sgt i32 [[N:%.*]], 0 |
| ; CHECK-NEXT: br i1 [[CMP11]], label [[FOR_END:%.*]], label [[FOR_BODY_PREHEADER:%.*]] |
| ; CHECK: for.body.preheader: |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_INC:%.*]] ], [ 0, [[FOR_BODY_PREHEADER]] ] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[TMP0]], 0 |
| ; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN:%.*]], label [[FOR_INC]] |
| ; CHECK: if.then: |
| ; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[C]], align 4 |
| ; CHECK-NEXT: [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i64 [[INDVARS_IV]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[ARRAYIDX3]], align 4 |
| ; CHECK-NEXT: [[MUL:%.*]] = mul nsw i32 [[TMP2]], [[TMP1]] |
| ; CHECK-NEXT: store i32 [[MUL]], i32* [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: br label [[FOR_INC]] |
| ; CHECK: for.inc: |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], [[N]] |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]] |
| ; CHECK: for.end.loopexit: |
| ; CHECK-NEXT: br label [[FOR_END]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: ret void |
| ; |
| |
| entry: |
| %not_null = icmp eq i32* %c, null |
| %dummy_and = and i1 %not_null, %dummy_cond |
| call void(i1, ...) @llvm.experimental.guard(i1 %dummy_and) [ "deopt"() ] |
| %cmp11 = icmp sgt i32 %n, 0 |
| br i1 %cmp11, label %for.end, label %for.body |
| |
| for.body: ; preds = %entry, %for.inc |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ] |
| %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv |
| %0 = load i32, i32* %arrayidx, align 4 |
| %cmp1 = icmp sgt i32 %0, 0 |
| br i1 %cmp1, label %if.then, label %for.inc |
| |
| if.then: ; preds = %for.body |
| %1 = load i32, i32* %c, align 4 |
| %arrayidx3 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv |
| %2 = load i32, i32* %arrayidx3, align 4 |
| %mul = mul nsw i32 %2, %1 |
| store i32 %mul, i32* %arrayidx, align 4 |
| br label %for.inc |
| |
| for.inc: ; preds = %for.body, %if.then |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, %n |
| br i1 %exitcond, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.inc, %entry |
| ret void |
| } |
| |
| attributes #0 = { nounwind uwtable nofree nosync } |
| !0 = !{i64 4} |
