| ; RUN: opt -aa-pipeline=basic-aa -passes='require<opt-remark-emit>,loop-mssa(loop-simplifycfg,licm)' -S < %s | FileCheck %s |
| ; RUN: opt -S -passes=licm -verify-memoryssa < %s | FileCheck %s |
| |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| ; Make sure the basic alloca pointer hoisting works: |
| ; CHECK-LABEL: @test1 |
| ; CHECK: load i32, ptr %c, align 4 |
| ; CHECK: for.body: |
| |
| ; Function Attrs: nounwind uwtable |
| define void @test1(ptr nocapture %a, ptr nocapture readonly %b, i32 %n) #0 { |
| entry: |
| %cmp6 = icmp sgt i32 %n, 0 |
| %c = alloca i32 |
| br i1 %cmp6, 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, ptr %a, i64 %indvars.iv |
| %0 = load i32, ptr %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, ptr %c, align 4 |
| %arrayidx3 = getelementptr inbounds i32, ptr %b, i64 %indvars.iv |
| %2 = load i32, ptr %arrayidx3, align 4 |
| %mul = mul nsw i32 %2, %1 |
| store i32 %mul, ptr %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 |
| } |
| |
| ; Make sure the basic alloca pointer hoisting works through a bitcast to a |
| ; pointer to a smaller type: |
| ; CHECK-LABEL: @test2 |
| ; CHECK: load i32, ptr %ca, align 4 |
| ; CHECK: for.body: |
| |
| ; Function Attrs: nounwind uwtable |
| define void @test2(ptr nocapture %a, ptr nocapture readonly %b, i32 %n) #0 { |
| entry: |
| %cmp6 = icmp sgt i32 %n, 0 |
| %ca = alloca i64 |
| br i1 %cmp6, 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, ptr %a, i64 %indvars.iv |
| %0 = load i32, ptr %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, ptr %ca, align 4 |
| %arrayidx3 = getelementptr inbounds i32, ptr %b, i64 %indvars.iv |
| %2 = load i32, ptr %arrayidx3, align 4 |
| %mul = mul nsw i32 %2, %1 |
| store i32 %mul, ptr %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 |
| } |
| |
| ; Make sure the basic alloca pointer hoisting works through an addrspacecast |
| ; CHECK-LABEL: @test2_addrspacecast |
| ; CHECK: load i32, ptr addrspace(1) %c, align 4 |
| ; CHECK: for.body: |
| |
| ; Function Attrs: nounwind uwtable |
| define void @test2_addrspacecast(ptr addrspace(1) nocapture %a, ptr addrspace(1) nocapture readonly %b, i32 %n) #0 { |
| entry: |
| %cmp6 = icmp sgt i32 %n, 0 |
| %ca = alloca i64 |
| %c = addrspacecast ptr %ca to ptr addrspace(1) |
| br i1 %cmp6, 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, ptr addrspace(1) %a, i64 %indvars.iv |
| %0 = load i32, ptr addrspace(1) %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, ptr addrspace(1) %c, align 4 |
| %arrayidx3 = getelementptr inbounds i32, ptr addrspace(1) %b, i64 %indvars.iv |
| %2 = load i32, ptr addrspace(1) %arrayidx3, align 4 |
| %mul = mul nsw i32 %2, %1 |
| store i32 %mul, ptr addrspace(1) %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 |
| } |
| |
| ; Make sure the basic alloca pointer hoisting works through a bitcast to a |
| ; pointer to a smaller type (where the bitcast also needs to be hoisted): |
| ; CHECK-LABEL: @test3 |
| ; CHECK: load i32, ptr %ca, align 4 |
| ; CHECK: for.body: |
| |
| ; Function Attrs: nounwind uwtable |
| define void @test3(ptr nocapture %a, ptr nocapture readonly %b, i32 %n) #0 { |
| entry: |
| %cmp6 = icmp sgt i32 %n, 0 |
| %ca = alloca i64 |
| br i1 %cmp6, 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, ptr %a, i64 %indvars.iv |
| %0 = load i32, ptr %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, ptr %ca, align 4 |
| %arrayidx3 = getelementptr inbounds i32, ptr %b, i64 %indvars.iv |
| %2 = load i32, ptr %arrayidx3, align 4 |
| %mul = mul nsw i32 %2, %1 |
| store i32 %mul, ptr %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 |
| } |
| |
| ; Make sure the basic alloca pointer hoisting does not happen through a bitcast |
| ; to a pointer to a larger type: |
| ; CHECK-LABEL: @test4 |
| ; CHECK: for.body: |
| ; CHECK: load i32, ptr %ca, align 4 |
| |
| ; Function Attrs: nounwind uwtable |
| define void @test4(ptr nocapture %a, ptr nocapture readonly %b, i32 %n) #0 { |
| entry: |
| %cmp6 = icmp sgt i32 %n, 0 |
| %ca = alloca i16 |
| br i1 %cmp6, 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, ptr %a, i64 %indvars.iv |
| %0 = load i32, ptr %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, ptr %ca, align 4 |
| %arrayidx3 = getelementptr inbounds i32, ptr %b, i64 %indvars.iv |
| %2 = load i32, ptr %arrayidx3, align 4 |
| %mul = mul nsw i32 %2, %1 |
| store i32 %mul, ptr %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 |
| } |
| |
| ; Don't crash on bitcasts to unsized types. |
| ; CHECK-LABEL: @test5 |
| ; CHECK: for.body: |
| ; CHECK: load i32, ptr %ca, align 4 |
| |
| %atype = type opaque |
| |
| ; Function Attrs: nounwind uwtable |
| define void @test5(ptr nocapture %a, ptr nocapture readonly %b, i32 %n) #0 { |
| entry: |
| %cmp6 = icmp sgt i32 %n, 0 |
| %ca = alloca i16 |
| br i1 %cmp6, 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, ptr %a, i64 %indvars.iv |
| %0 = load i32, ptr %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, ptr %ca, align 4 |
| %arrayidx3 = getelementptr inbounds i32, ptr %b, i64 %indvars.iv |
| %2 = load i32, ptr %arrayidx3, align 4 |
| %mul = mul nsw i32 %2, %1 |
| store i32 %mul, ptr %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 } |
| |
