| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -mtriple=thumbv8m.main -indvars -S < %s | FileCheck %s --check-prefix=CHECK-V8M |
| ; RUN: opt -mtriple=thumbv8a -indvars -S < %s | FileCheck %s --check-prefix=CHECK-V8A |
| |
| define i32 @remove_loop(i32 %size) #0 { |
| ; CHECK-V8M-LABEL: @remove_loop( |
| ; CHECK-V8M-NEXT: entry: |
| ; CHECK-V8M-NEXT: [[TMP0:%.*]] = add i32 [[SIZE:%.*]], 31 |
| ; CHECK-V8M-NEXT: [[TMP1:%.*]] = icmp ult i32 [[SIZE]], 31 |
| ; CHECK-V8M-NEXT: [[UMIN:%.*]] = select i1 [[TMP1]], i32 [[SIZE]], i32 31 |
| ; CHECK-V8M-NEXT: [[TMP2:%.*]] = sub i32 [[TMP0]], [[UMIN]] |
| ; CHECK-V8M-NEXT: [[TMP3:%.*]] = lshr i32 [[TMP2]], 5 |
| ; CHECK-V8M-NEXT: [[TMP4:%.*]] = shl nuw i32 [[TMP3]], 5 |
| ; CHECK-V8M-NEXT: br label [[WHILE_COND:%.*]] |
| ; CHECK-V8M: while.cond: |
| ; CHECK-V8M-NEXT: br i1 false, label [[WHILE_COND]], label [[WHILE_END:%.*]] |
| ; CHECK-V8M: while.end: |
| ; CHECK-V8M-NEXT: [[TMP5:%.*]] = sub i32 [[SIZE]], [[TMP4]] |
| ; CHECK-V8M-NEXT: ret i32 [[TMP5]] |
| ; |
| ; CHECK-V8A-LABEL: @remove_loop( |
| ; CHECK-V8A-NEXT: entry: |
| ; CHECK-V8A-NEXT: [[TMP0:%.*]] = add i32 [[SIZE:%.*]], 31 |
| ; CHECK-V8A-NEXT: [[TMP1:%.*]] = icmp ult i32 [[SIZE]], 31 |
| ; CHECK-V8A-NEXT: [[UMIN:%.*]] = select i1 [[TMP1]], i32 [[SIZE]], i32 31 |
| ; CHECK-V8A-NEXT: [[TMP2:%.*]] = sub i32 [[TMP0]], [[UMIN]] |
| ; CHECK-V8A-NEXT: [[TMP3:%.*]] = lshr i32 [[TMP2]], 5 |
| ; CHECK-V8A-NEXT: [[TMP4:%.*]] = shl nuw i32 [[TMP3]], 5 |
| ; CHECK-V8A-NEXT: br label [[WHILE_COND:%.*]] |
| ; CHECK-V8A: while.cond: |
| ; CHECK-V8A-NEXT: br i1 false, label [[WHILE_COND]], label [[WHILE_END:%.*]] |
| ; CHECK-V8A: while.end: |
| ; CHECK-V8A-NEXT: [[TMP5:%.*]] = sub i32 [[SIZE]], [[TMP4]] |
| ; CHECK-V8A-NEXT: ret i32 [[TMP5]] |
| ; |
| entry: |
| br label %while.cond |
| |
| while.cond: ; preds = %while.cond, %entry |
| %size.addr.0 = phi i32 [ %size, %entry ], [ %sub, %while.cond ] |
| %cmp = icmp ugt i32 %size.addr.0, 31 |
| %sub = add i32 %size.addr.0, -32 |
| br i1 %cmp, label %while.cond, label %while.end |
| |
| while.end: ; preds = %while.cond |
| %size.lcssa = phi i32 [ %size.addr.0, %while.cond ] |
| ret i32 %size.lcssa |
| } |
| |
| define void @expandOuterRecurrence(i32 %arg) nounwind #0 { |
| ; CHECK-V8M-LABEL: @expandOuterRecurrence( |
| ; CHECK-V8M-NEXT: entry: |
| ; CHECK-V8M-NEXT: [[SUB1:%.*]] = sub nsw i32 [[ARG:%.*]], 1 |
| ; CHECK-V8M-NEXT: [[CMP1:%.*]] = icmp slt i32 0, [[SUB1]] |
| ; CHECK-V8M-NEXT: br i1 [[CMP1]], label [[OUTER_PREHEADER:%.*]], label [[EXIT:%.*]] |
| ; CHECK-V8M: outer.preheader: |
| ; CHECK-V8M-NEXT: br label [[OUTER:%.*]] |
| ; CHECK-V8M: outer: |
| ; CHECK-V8M-NEXT: [[I:%.*]] = phi i32 [ [[I_INC:%.*]], [[OUTER_INC:%.*]] ], [ 0, [[OUTER_PREHEADER]] ] |
| ; CHECK-V8M-NEXT: [[SUB2:%.*]] = sub nsw i32 [[ARG]], [[I]] |
| ; CHECK-V8M-NEXT: [[SUB3:%.*]] = sub nsw i32 [[SUB2]], 1 |
| ; CHECK-V8M-NEXT: [[CMP2:%.*]] = icmp slt i32 0, [[SUB3]] |
| ; CHECK-V8M-NEXT: br i1 [[CMP2]], label [[INNER_PH:%.*]], label [[OUTER_INC]] |
| ; CHECK-V8M: inner.ph: |
| ; CHECK-V8M-NEXT: br label [[INNER:%.*]] |
| ; CHECK-V8M: inner: |
| ; CHECK-V8M-NEXT: br i1 false, label [[INNER]], label [[OUTER_INC_LOOPEXIT:%.*]] |
| ; CHECK-V8M: outer.inc.loopexit: |
| ; CHECK-V8M-NEXT: br label [[OUTER_INC]] |
| ; CHECK-V8M: outer.inc: |
| ; CHECK-V8M-NEXT: [[I_INC]] = add nuw nsw i32 [[I]], 1 |
| ; CHECK-V8M-NEXT: br i1 false, label [[OUTER]], label [[EXIT_LOOPEXIT:%.*]] |
| ; CHECK-V8M: exit.loopexit: |
| ; CHECK-V8M-NEXT: br label [[EXIT]] |
| ; CHECK-V8M: exit: |
| ; CHECK-V8M-NEXT: ret void |
| ; |
| ; CHECK-V8A-LABEL: @expandOuterRecurrence( |
| ; CHECK-V8A-NEXT: entry: |
| ; CHECK-V8A-NEXT: [[SUB1:%.*]] = sub nsw i32 [[ARG:%.*]], 1 |
| ; CHECK-V8A-NEXT: [[CMP1:%.*]] = icmp slt i32 0, [[SUB1]] |
| ; CHECK-V8A-NEXT: br i1 [[CMP1]], label [[OUTER_PREHEADER:%.*]], label [[EXIT:%.*]] |
| ; CHECK-V8A: outer.preheader: |
| ; CHECK-V8A-NEXT: br label [[OUTER:%.*]] |
| ; CHECK-V8A: outer: |
| ; CHECK-V8A-NEXT: [[I:%.*]] = phi i32 [ [[I_INC:%.*]], [[OUTER_INC:%.*]] ], [ 0, [[OUTER_PREHEADER]] ] |
| ; CHECK-V8A-NEXT: [[SUB2:%.*]] = sub nsw i32 [[ARG]], [[I]] |
| ; CHECK-V8A-NEXT: [[SUB3:%.*]] = sub nsw i32 [[SUB2]], 1 |
| ; CHECK-V8A-NEXT: [[CMP2:%.*]] = icmp slt i32 0, [[SUB3]] |
| ; CHECK-V8A-NEXT: br i1 [[CMP2]], label [[INNER_PH:%.*]], label [[OUTER_INC]] |
| ; CHECK-V8A: inner.ph: |
| ; CHECK-V8A-NEXT: br label [[INNER:%.*]] |
| ; CHECK-V8A: inner: |
| ; CHECK-V8A-NEXT: br i1 false, label [[INNER]], label [[OUTER_INC_LOOPEXIT:%.*]] |
| ; CHECK-V8A: outer.inc.loopexit: |
| ; CHECK-V8A-NEXT: br label [[OUTER_INC]] |
| ; CHECK-V8A: outer.inc: |
| ; CHECK-V8A-NEXT: [[I_INC]] = add nuw nsw i32 [[I]], 1 |
| ; CHECK-V8A-NEXT: br i1 false, label [[OUTER]], label [[EXIT_LOOPEXIT:%.*]] |
| ; CHECK-V8A: exit.loopexit: |
| ; CHECK-V8A-NEXT: br label [[EXIT]] |
| ; CHECK-V8A: exit: |
| ; CHECK-V8A-NEXT: ret void |
| ; |
| entry: |
| %sub1 = sub nsw i32 %arg, 1 |
| %cmp1 = icmp slt i32 0, %sub1 |
| br i1 %cmp1, label %outer, label %exit |
| |
| outer: |
| %i = phi i32 [ 0, %entry ], [ %i.inc, %outer.inc ] |
| %sub2 = sub nsw i32 %arg, %i |
| %sub3 = sub nsw i32 %sub2, 1 |
| %cmp2 = icmp slt i32 0, %sub3 |
| br i1 %cmp2, label %inner.ph, label %outer.inc |
| |
| inner.ph: |
| br label %inner |
| |
| inner: |
| %j = phi i32 [ 0, %inner.ph ], [ %j.inc, %inner ] |
| %j.inc = add nsw i32 %j, 1 |
| %cmp3 = icmp slt i32 %j.inc, %sub3 |
| br i1 %cmp3, label %inner, label %outer.inc |
| |
| outer.inc: |
| %i.inc = add nsw i32 %i, 1 |
| %cmp4 = icmp slt i32 %i.inc, %sub1 |
| br i1 %cmp4, label %outer, label %exit |
| |
| exit: |
| ret void |
| } |
| |
| define i32 @test1(i32* %array, i32 %length, i32 %n) #0 { |
| ; CHECK-V8M-LABEL: @test1( |
| ; CHECK-V8M-NEXT: loop.preheader: |
| ; CHECK-V8M-NEXT: [[TMP0:%.*]] = icmp ugt i32 [[N:%.*]], 1 |
| ; CHECK-V8M-NEXT: [[UMAX:%.*]] = select i1 [[TMP0]], i32 [[N]], i32 1 |
| ; CHECK-V8M-NEXT: [[TMP1:%.*]] = add i32 [[UMAX]], -1 |
| ; CHECK-V8M-NEXT: [[TMP2:%.*]] = icmp ult i32 [[LENGTH:%.*]], [[TMP1]] |
| ; CHECK-V8M-NEXT: [[UMIN:%.*]] = select i1 [[TMP2]], i32 [[LENGTH]], i32 [[TMP1]] |
| ; CHECK-V8M-NEXT: [[TMP3:%.*]] = icmp ne i32 [[LENGTH]], [[UMIN]] |
| ; CHECK-V8M-NEXT: br label [[LOOP:%.*]] |
| ; CHECK-V8M: loop: |
| ; CHECK-V8M-NEXT: [[LOOP_ACC:%.*]] = phi i32 [ [[LOOP_ACC_NEXT:%.*]], [[GUARDED:%.*]] ], [ 0, [[LOOP_PREHEADER:%.*]] ] |
| ; CHECK-V8M-NEXT: [[I:%.*]] = phi i32 [ [[I_NEXT:%.*]], [[GUARDED]] ], [ 0, [[LOOP_PREHEADER]] ] |
| ; CHECK-V8M-NEXT: br i1 [[TMP3]], label [[GUARDED]], label [[DEOPT:%.*]], !prof !0 |
| ; CHECK-V8M: deopt: |
| ; CHECK-V8M-NEXT: call void @prevent_merging() |
| ; CHECK-V8M-NEXT: ret i32 -1 |
| ; CHECK-V8M: guarded: |
| ; CHECK-V8M-NEXT: [[I_I64:%.*]] = zext i32 [[I]] to i64 |
| ; CHECK-V8M-NEXT: [[ARRAY_I_PTR:%.*]] = getelementptr inbounds i32, i32* [[ARRAY:%.*]], i64 [[I_I64]] |
| ; CHECK-V8M-NEXT: [[ARRAY_I:%.*]] = load i32, i32* [[ARRAY_I_PTR]], align 4 |
| ; CHECK-V8M-NEXT: [[LOOP_ACC_NEXT]] = add i32 [[LOOP_ACC]], [[ARRAY_I]] |
| ; CHECK-V8M-NEXT: [[I_NEXT]] = add nuw i32 [[I]], 1 |
| ; CHECK-V8M-NEXT: [[CONTINUE:%.*]] = icmp ult i32 [[I_NEXT]], [[N]] |
| ; CHECK-V8M-NEXT: br i1 [[CONTINUE]], label [[LOOP]], label [[EXIT:%.*]] |
| ; CHECK-V8M: exit: |
| ; CHECK-V8M-NEXT: [[RESULT:%.*]] = phi i32 [ [[LOOP_ACC_NEXT]], [[GUARDED]] ] |
| ; CHECK-V8M-NEXT: ret i32 [[RESULT]] |
| ; |
| ; CHECK-V8A-LABEL: @test1( |
| ; CHECK-V8A-NEXT: loop.preheader: |
| ; CHECK-V8A-NEXT: [[TMP0:%.*]] = icmp ugt i32 [[N:%.*]], 1 |
| ; CHECK-V8A-NEXT: [[UMAX:%.*]] = select i1 [[TMP0]], i32 [[N]], i32 1 |
| ; CHECK-V8A-NEXT: [[TMP1:%.*]] = add i32 [[UMAX]], -1 |
| ; CHECK-V8A-NEXT: [[TMP2:%.*]] = icmp ult i32 [[LENGTH:%.*]], [[TMP1]] |
| ; CHECK-V8A-NEXT: [[UMIN:%.*]] = select i1 [[TMP2]], i32 [[LENGTH]], i32 [[TMP1]] |
| ; CHECK-V8A-NEXT: [[TMP3:%.*]] = icmp ne i32 [[LENGTH]], [[UMIN]] |
| ; CHECK-V8A-NEXT: br label [[LOOP:%.*]] |
| ; CHECK-V8A: loop: |
| ; CHECK-V8A-NEXT: [[LOOP_ACC:%.*]] = phi i32 [ [[LOOP_ACC_NEXT:%.*]], [[GUARDED:%.*]] ], [ 0, [[LOOP_PREHEADER:%.*]] ] |
| ; CHECK-V8A-NEXT: [[I:%.*]] = phi i32 [ [[I_NEXT:%.*]], [[GUARDED]] ], [ 0, [[LOOP_PREHEADER]] ] |
| ; CHECK-V8A-NEXT: br i1 [[TMP3]], label [[GUARDED]], label [[DEOPT:%.*]], !prof !0 |
| ; CHECK-V8A: deopt: |
| ; CHECK-V8A-NEXT: call void @prevent_merging() |
| ; CHECK-V8A-NEXT: ret i32 -1 |
| ; CHECK-V8A: guarded: |
| ; CHECK-V8A-NEXT: [[I_I64:%.*]] = zext i32 [[I]] to i64 |
| ; CHECK-V8A-NEXT: [[ARRAY_I_PTR:%.*]] = getelementptr inbounds i32, i32* [[ARRAY:%.*]], i64 [[I_I64]] |
| ; CHECK-V8A-NEXT: [[ARRAY_I:%.*]] = load i32, i32* [[ARRAY_I_PTR]], align 4 |
| ; CHECK-V8A-NEXT: [[LOOP_ACC_NEXT]] = add i32 [[LOOP_ACC]], [[ARRAY_I]] |
| ; CHECK-V8A-NEXT: [[I_NEXT]] = add nuw i32 [[I]], 1 |
| ; CHECK-V8A-NEXT: [[CONTINUE:%.*]] = icmp ult i32 [[I_NEXT]], [[N]] |
| ; CHECK-V8A-NEXT: br i1 [[CONTINUE]], label [[LOOP]], label [[EXIT:%.*]] |
| ; CHECK-V8A: exit: |
| ; CHECK-V8A-NEXT: [[RESULT:%.*]] = phi i32 [ [[LOOP_ACC_NEXT]], [[GUARDED]] ] |
| ; CHECK-V8A-NEXT: ret i32 [[RESULT]] |
| ; |
| loop.preheader: ; preds = %entry |
| br label %loop |
| |
| loop: ; preds = %guarded, %loop.preheader |
| %loop.acc = phi i32 [ %loop.acc.next, %guarded ], [ 0, %loop.preheader ] |
| %i = phi i32 [ %i.next, %guarded ], [ 0, %loop.preheader ] |
| %within.bounds = icmp ult i32 %i, %length |
| br i1 %within.bounds, label %guarded, label %deopt, !prof !0 |
| |
| deopt: ; preds = %loop |
| call void @prevent_merging() |
| ret i32 -1 |
| |
| guarded: ; preds = %loop |
| %i.i64 = zext i32 %i to i64 |
| %array.i.ptr = getelementptr inbounds i32, i32* %array, i64 %i.i64 |
| %array.i = load i32, i32* %array.i.ptr, align 4 |
| %loop.acc.next = add i32 %loop.acc, %array.i |
| %i.next = add nuw i32 %i, 1 |
| %continue = icmp ult i32 %i.next, %n |
| br i1 %continue, label %loop, label %exit |
| |
| exit: ; preds = %guarded, %entry |
| %result = phi i32 [ %loop.acc.next, %guarded ] |
| ret i32 %result |
| } |
| |
| declare void @maythrow() |
| |
| define i32 @test2(i32* %array, i32 %length, i32 %n) #0 { |
| ; CHECK-V8M-LABEL: @test2( |
| ; CHECK-V8M-NEXT: loop.preheader: |
| ; CHECK-V8M-NEXT: [[TMP0:%.*]] = add i32 [[N:%.*]], -1 |
| ; CHECK-V8M-NEXT: [[TMP1:%.*]] = icmp ult i32 [[LENGTH:%.*]], [[TMP0]] |
| ; CHECK-V8M-NEXT: [[UMIN:%.*]] = select i1 [[TMP1]], i32 [[LENGTH]], i32 [[TMP0]] |
| ; CHECK-V8M-NEXT: [[TMP2:%.*]] = icmp ne i32 [[LENGTH]], [[UMIN]] |
| ; CHECK-V8M-NEXT: br label [[LOOP:%.*]] |
| ; CHECK-V8M: loop: |
| ; CHECK-V8M-NEXT: [[LOOP_ACC:%.*]] = phi i32 [ [[LOOP_ACC_NEXT:%.*]], [[GUARDED:%.*]] ], [ 0, [[LOOP_PREHEADER:%.*]] ] |
| ; CHECK-V8M-NEXT: [[I:%.*]] = phi i32 [ [[I_NEXT:%.*]], [[GUARDED]] ], [ 0, [[LOOP_PREHEADER]] ] |
| ; CHECK-V8M-NEXT: br i1 [[TMP2]], label [[GUARDED]], label [[DEOPT:%.*]], !prof !0 |
| ; CHECK-V8M: deopt: |
| ; CHECK-V8M-NEXT: call void @prevent_merging() |
| ; CHECK-V8M-NEXT: ret i32 -1 |
| ; CHECK-V8M: guarded: |
| ; CHECK-V8M-NEXT: [[I_I64:%.*]] = zext i32 [[I]] to i64 |
| ; CHECK-V8M-NEXT: [[ARRAY_I_PTR:%.*]] = getelementptr inbounds i32, i32* [[ARRAY:%.*]], i64 [[I_I64]] |
| ; CHECK-V8M-NEXT: [[ARRAY_I:%.*]] = load i32, i32* [[ARRAY_I_PTR]], align 4 |
| ; CHECK-V8M-NEXT: [[LOOP_ACC_NEXT]] = add i32 [[LOOP_ACC]], [[ARRAY_I]] |
| ; CHECK-V8M-NEXT: [[I_NEXT]] = add nuw i32 [[I]], 1 |
| ; CHECK-V8M-NEXT: [[CONTINUE:%.*]] = icmp ne i32 [[I_NEXT]], [[N]] |
| ; CHECK-V8M-NEXT: br i1 [[CONTINUE]], label [[LOOP]], label [[EXIT:%.*]] |
| ; CHECK-V8M: exit: |
| ; CHECK-V8M-NEXT: [[RESULT:%.*]] = phi i32 [ [[LOOP_ACC_NEXT]], [[GUARDED]] ] |
| ; CHECK-V8M-NEXT: ret i32 [[RESULT]] |
| ; |
| ; CHECK-V8A-LABEL: @test2( |
| ; CHECK-V8A-NEXT: loop.preheader: |
| ; CHECK-V8A-NEXT: [[TMP0:%.*]] = add i32 [[N:%.*]], -1 |
| ; CHECK-V8A-NEXT: [[TMP1:%.*]] = icmp ult i32 [[LENGTH:%.*]], [[TMP0]] |
| ; CHECK-V8A-NEXT: [[UMIN:%.*]] = select i1 [[TMP1]], i32 [[LENGTH]], i32 [[TMP0]] |
| ; CHECK-V8A-NEXT: [[TMP2:%.*]] = icmp ne i32 [[LENGTH]], [[UMIN]] |
| ; CHECK-V8A-NEXT: br label [[LOOP:%.*]] |
| ; CHECK-V8A: loop: |
| ; CHECK-V8A-NEXT: [[LOOP_ACC:%.*]] = phi i32 [ [[LOOP_ACC_NEXT:%.*]], [[GUARDED:%.*]] ], [ 0, [[LOOP_PREHEADER:%.*]] ] |
| ; CHECK-V8A-NEXT: [[I:%.*]] = phi i32 [ [[I_NEXT:%.*]], [[GUARDED]] ], [ 0, [[LOOP_PREHEADER]] ] |
| ; CHECK-V8A-NEXT: br i1 [[TMP2]], label [[GUARDED]], label [[DEOPT:%.*]], !prof !0 |
| ; CHECK-V8A: deopt: |
| ; CHECK-V8A-NEXT: call void @prevent_merging() |
| ; CHECK-V8A-NEXT: ret i32 -1 |
| ; CHECK-V8A: guarded: |
| ; CHECK-V8A-NEXT: [[I_I64:%.*]] = zext i32 [[I]] to i64 |
| ; CHECK-V8A-NEXT: [[ARRAY_I_PTR:%.*]] = getelementptr inbounds i32, i32* [[ARRAY:%.*]], i64 [[I_I64]] |
| ; CHECK-V8A-NEXT: [[ARRAY_I:%.*]] = load i32, i32* [[ARRAY_I_PTR]], align 4 |
| ; CHECK-V8A-NEXT: [[LOOP_ACC_NEXT]] = add i32 [[LOOP_ACC]], [[ARRAY_I]] |
| ; CHECK-V8A-NEXT: [[I_NEXT]] = add nuw i32 [[I]], 1 |
| ; CHECK-V8A-NEXT: [[CONTINUE:%.*]] = icmp ne i32 [[I_NEXT]], [[N]] |
| ; CHECK-V8A-NEXT: br i1 [[CONTINUE]], label [[LOOP]], label [[EXIT:%.*]] |
| ; CHECK-V8A: exit: |
| ; CHECK-V8A-NEXT: [[RESULT:%.*]] = phi i32 [ [[LOOP_ACC_NEXT]], [[GUARDED]] ] |
| ; CHECK-V8A-NEXT: ret i32 [[RESULT]] |
| ; |
| loop.preheader: ; preds = %entry |
| br label %loop |
| |
| loop: ; preds = %guarded, %loop.preheader |
| %loop.acc = phi i32 [ %loop.acc.next, %guarded ], [ 0, %loop.preheader ] |
| %i = phi i32 [ %i.next, %guarded ], [ 0, %loop.preheader ] |
| %within.bounds = icmp ne i32 %i, %length |
| br i1 %within.bounds, label %guarded, label %deopt, !prof !0 |
| |
| deopt: ; preds = %loop |
| call void @prevent_merging() |
| ret i32 -1 |
| |
| guarded: ; preds = %loop |
| %i.i64 = zext i32 %i to i64 |
| %array.i.ptr = getelementptr inbounds i32, i32* %array, i64 %i.i64 |
| %array.i = load i32, i32* %array.i.ptr, align 4 |
| %loop.acc.next = add i32 %loop.acc, %array.i |
| %i.next = add nuw i32 %i, 1 |
| %continue = icmp ne i32 %i.next, %n |
| br i1 %continue, label %loop, label %exit |
| |
| exit: ; preds = %guarded, %entry |
| %result = phi i32 [ %loop.acc.next, %guarded ] |
| ret i32 %result |
| } |
| |
| define i32 @two_range_checks(i32* %array.1, i32 %length.1, i32* %array.2, i32 %length.2, i32 %n) #0 { |
| ; CHECK-V8M-LABEL: @two_range_checks( |
| ; CHECK-V8M-NEXT: loop.preheader: |
| ; CHECK-V8M-NEXT: [[TMP0:%.*]] = icmp ult i32 [[LENGTH_2:%.*]], [[LENGTH_1:%.*]] |
| ; CHECK-V8M-NEXT: [[UMIN:%.*]] = select i1 [[TMP0]], i32 [[LENGTH_2]], i32 [[LENGTH_1]] |
| ; CHECK-V8M-NEXT: [[TMP1:%.*]] = icmp ult i32 [[LENGTH_2]], [[LENGTH_1]] |
| ; CHECK-V8M-NEXT: [[UMIN1:%.*]] = select i1 [[TMP1]], i32 [[LENGTH_2]], i32 [[LENGTH_1]] |
| ; CHECK-V8M-NEXT: [[TMP2:%.*]] = icmp ugt i32 [[N:%.*]], 1 |
| ; CHECK-V8M-NEXT: [[UMAX:%.*]] = select i1 [[TMP2]], i32 [[N]], i32 1 |
| ; CHECK-V8M-NEXT: [[TMP3:%.*]] = add i32 [[UMAX]], -1 |
| ; CHECK-V8M-NEXT: [[TMP4:%.*]] = icmp ult i32 [[UMIN1]], [[TMP3]] |
| ; CHECK-V8M-NEXT: [[UMIN2:%.*]] = select i1 [[TMP4]], i32 [[UMIN1]], i32 [[TMP3]] |
| ; CHECK-V8M-NEXT: [[TMP5:%.*]] = icmp ne i32 [[UMIN]], [[UMIN2]] |
| ; CHECK-V8M-NEXT: br label [[LOOP:%.*]] |
| ; CHECK-V8M: loop: |
| ; CHECK-V8M-NEXT: [[LOOP_ACC:%.*]] = phi i32 [ [[LOOP_ACC_NEXT:%.*]], [[GUARDED:%.*]] ], [ 0, [[LOOP_PREHEADER:%.*]] ] |
| ; CHECK-V8M-NEXT: [[I:%.*]] = phi i32 [ [[I_NEXT:%.*]], [[GUARDED]] ], [ 0, [[LOOP_PREHEADER]] ] |
| ; CHECK-V8M-NEXT: br i1 [[TMP5]], label [[GUARDED]], label [[DEOPT:%.*]], !prof !0 |
| ; CHECK-V8M: deopt: |
| ; CHECK-V8M-NEXT: call void @prevent_merging() |
| ; CHECK-V8M-NEXT: ret i32 -1 |
| ; CHECK-V8M: guarded: |
| ; CHECK-V8M-NEXT: [[I_I64:%.*]] = zext i32 [[I]] to i64 |
| ; CHECK-V8M-NEXT: [[ARRAY_1_I_PTR:%.*]] = getelementptr inbounds i32, i32* [[ARRAY_1:%.*]], i64 [[I_I64]] |
| ; CHECK-V8M-NEXT: [[ARRAY_1_I:%.*]] = load i32, i32* [[ARRAY_1_I_PTR]], align 4 |
| ; CHECK-V8M-NEXT: [[LOOP_ACC_1:%.*]] = add i32 [[LOOP_ACC]], [[ARRAY_1_I]] |
| ; CHECK-V8M-NEXT: [[ARRAY_2_I_PTR:%.*]] = getelementptr inbounds i32, i32* [[ARRAY_2:%.*]], i64 [[I_I64]] |
| ; CHECK-V8M-NEXT: [[ARRAY_2_I:%.*]] = load i32, i32* [[ARRAY_2_I_PTR]], align 4 |
| ; CHECK-V8M-NEXT: [[LOOP_ACC_NEXT]] = add i32 [[LOOP_ACC_1]], [[ARRAY_2_I]] |
| ; CHECK-V8M-NEXT: [[I_NEXT]] = add nuw i32 [[I]], 1 |
| ; CHECK-V8M-NEXT: [[CONTINUE:%.*]] = icmp ult i32 [[I_NEXT]], [[N]] |
| ; CHECK-V8M-NEXT: br i1 [[CONTINUE]], label [[LOOP]], label [[EXIT:%.*]] |
| ; CHECK-V8M: exit: |
| ; CHECK-V8M-NEXT: [[RESULT:%.*]] = phi i32 [ [[LOOP_ACC_NEXT]], [[GUARDED]] ] |
| ; CHECK-V8M-NEXT: ret i32 [[RESULT]] |
| ; |
| ; CHECK-V8A-LABEL: @two_range_checks( |
| ; CHECK-V8A-NEXT: loop.preheader: |
| ; CHECK-V8A-NEXT: [[TMP0:%.*]] = icmp ult i32 [[LENGTH_2:%.*]], [[LENGTH_1:%.*]] |
| ; CHECK-V8A-NEXT: [[UMIN:%.*]] = select i1 [[TMP0]], i32 [[LENGTH_2]], i32 [[LENGTH_1]] |
| ; CHECK-V8A-NEXT: [[TMP1:%.*]] = icmp ult i32 [[LENGTH_2]], [[LENGTH_1]] |
| ; CHECK-V8A-NEXT: [[UMIN1:%.*]] = select i1 [[TMP1]], i32 [[LENGTH_2]], i32 [[LENGTH_1]] |
| ; CHECK-V8A-NEXT: [[TMP2:%.*]] = icmp ugt i32 [[N:%.*]], 1 |
| ; CHECK-V8A-NEXT: [[UMAX:%.*]] = select i1 [[TMP2]], i32 [[N]], i32 1 |
| ; CHECK-V8A-NEXT: [[TMP3:%.*]] = add i32 [[UMAX]], -1 |
| ; CHECK-V8A-NEXT: [[TMP4:%.*]] = icmp ult i32 [[UMIN1]], [[TMP3]] |
| ; CHECK-V8A-NEXT: [[UMIN2:%.*]] = select i1 [[TMP4]], i32 [[UMIN1]], i32 [[TMP3]] |
| ; CHECK-V8A-NEXT: [[TMP5:%.*]] = icmp ne i32 [[UMIN]], [[UMIN2]] |
| ; CHECK-V8A-NEXT: br label [[LOOP:%.*]] |
| ; CHECK-V8A: loop: |
| ; CHECK-V8A-NEXT: [[LOOP_ACC:%.*]] = phi i32 [ [[LOOP_ACC_NEXT:%.*]], [[GUARDED:%.*]] ], [ 0, [[LOOP_PREHEADER:%.*]] ] |
| ; CHECK-V8A-NEXT: [[I:%.*]] = phi i32 [ [[I_NEXT:%.*]], [[GUARDED]] ], [ 0, [[LOOP_PREHEADER]] ] |
| ; CHECK-V8A-NEXT: br i1 [[TMP5]], label [[GUARDED]], label [[DEOPT:%.*]], !prof !0 |
| ; CHECK-V8A: deopt: |
| ; CHECK-V8A-NEXT: call void @prevent_merging() |
| ; CHECK-V8A-NEXT: ret i32 -1 |
| ; CHECK-V8A: guarded: |
| ; CHECK-V8A-NEXT: [[I_I64:%.*]] = zext i32 [[I]] to i64 |
| ; CHECK-V8A-NEXT: [[ARRAY_1_I_PTR:%.*]] = getelementptr inbounds i32, i32* [[ARRAY_1:%.*]], i64 [[I_I64]] |
| ; CHECK-V8A-NEXT: [[ARRAY_1_I:%.*]] = load i32, i32* [[ARRAY_1_I_PTR]], align 4 |
| ; CHECK-V8A-NEXT: [[LOOP_ACC_1:%.*]] = add i32 [[LOOP_ACC]], [[ARRAY_1_I]] |
| ; CHECK-V8A-NEXT: [[ARRAY_2_I_PTR:%.*]] = getelementptr inbounds i32, i32* [[ARRAY_2:%.*]], i64 [[I_I64]] |
| ; CHECK-V8A-NEXT: [[ARRAY_2_I:%.*]] = load i32, i32* [[ARRAY_2_I_PTR]], align 4 |
| ; CHECK-V8A-NEXT: [[LOOP_ACC_NEXT]] = add i32 [[LOOP_ACC_1]], [[ARRAY_2_I]] |
| ; CHECK-V8A-NEXT: [[I_NEXT]] = add nuw i32 [[I]], 1 |
| ; CHECK-V8A-NEXT: [[CONTINUE:%.*]] = icmp ult i32 [[I_NEXT]], [[N]] |
| ; CHECK-V8A-NEXT: br i1 [[CONTINUE]], label [[LOOP]], label [[EXIT:%.*]] |
| ; CHECK-V8A: exit: |
| ; CHECK-V8A-NEXT: [[RESULT:%.*]] = phi i32 [ [[LOOP_ACC_NEXT]], [[GUARDED]] ] |
| ; CHECK-V8A-NEXT: ret i32 [[RESULT]] |
| ; |
| loop.preheader: ; preds = %entry |
| br label %loop |
| |
| loop: ; preds = %guarded, %loop.preheader |
| %loop.acc = phi i32 [ %loop.acc.next, %guarded ], [ 0, %loop.preheader ] |
| %i = phi i32 [ %i.next, %guarded ], [ 0, %loop.preheader ] |
| %within.bounds.1 = icmp ult i32 %i, %length.1 |
| %within.bounds.2 = icmp ult i32 %i, %length.2 |
| %within.bounds = and i1 %within.bounds.1, %within.bounds.2 |
| br i1 %within.bounds, label %guarded, label %deopt, !prof !0 |
| |
| deopt: ; preds = %loop |
| call void @prevent_merging() |
| ret i32 -1 |
| |
| guarded: ; preds = %loop |
| %i.i64 = zext i32 %i to i64 |
| %array.1.i.ptr = getelementptr inbounds i32, i32* %array.1, i64 %i.i64 |
| %array.1.i = load i32, i32* %array.1.i.ptr, align 4 |
| %loop.acc.1 = add i32 %loop.acc, %array.1.i |
| %array.2.i.ptr = getelementptr inbounds i32, i32* %array.2, i64 %i.i64 |
| %array.2.i = load i32, i32* %array.2.i.ptr, align 4 |
| %loop.acc.next = add i32 %loop.acc.1, %array.2.i |
| %i.next = add nuw i32 %i, 1 |
| %continue = icmp ult i32 %i.next, %n |
| br i1 %continue, label %loop, label %exit |
| |
| exit: ; preds = %guarded, %entry |
| %result = phi i32 [ %loop.acc.next, %guarded ] |
| ret i32 %result |
| } |
| |
| define i32 @three_range_checks(i32* %array.1, i32 %length.1, i32* %array.2, i32 %length.2, i32* %array.3, i32 %length.3, i32 %n) #0 { |
| ; CHECK-V8M-LABEL: @three_range_checks( |
| ; CHECK-V8M-NEXT: loop.preheader: |
| ; CHECK-V8M-NEXT: [[TMP0:%.*]] = icmp ult i32 [[LENGTH_3:%.*]], [[LENGTH_2:%.*]] |
| ; CHECK-V8M-NEXT: [[UMIN:%.*]] = select i1 [[TMP0]], i32 [[LENGTH_3]], i32 [[LENGTH_2]] |
| ; CHECK-V8M-NEXT: [[TMP1:%.*]] = icmp ult i32 [[UMIN]], [[LENGTH_1:%.*]] |
| ; CHECK-V8M-NEXT: [[UMIN1:%.*]] = select i1 [[TMP1]], i32 [[UMIN]], i32 [[LENGTH_1]] |
| ; CHECK-V8M-NEXT: [[TMP2:%.*]] = icmp ult i32 [[LENGTH_3]], [[LENGTH_2]] |
| ; CHECK-V8M-NEXT: [[UMIN2:%.*]] = select i1 [[TMP2]], i32 [[LENGTH_3]], i32 [[LENGTH_2]] |
| ; CHECK-V8M-NEXT: [[TMP3:%.*]] = icmp ult i32 [[UMIN2]], [[LENGTH_1]] |
| ; CHECK-V8M-NEXT: [[UMIN3:%.*]] = select i1 [[TMP3]], i32 [[UMIN2]], i32 [[LENGTH_1]] |
| ; CHECK-V8M-NEXT: [[TMP4:%.*]] = icmp ugt i32 [[N:%.*]], 1 |
| ; CHECK-V8M-NEXT: [[UMAX:%.*]] = select i1 [[TMP4]], i32 [[N]], i32 1 |
| ; CHECK-V8M-NEXT: [[TMP5:%.*]] = add i32 [[UMAX]], -1 |
| ; CHECK-V8M-NEXT: [[TMP6:%.*]] = icmp ult i32 [[UMIN3]], [[TMP5]] |
| ; CHECK-V8M-NEXT: [[UMIN4:%.*]] = select i1 [[TMP6]], i32 [[UMIN3]], i32 [[TMP5]] |
| ; CHECK-V8M-NEXT: [[TMP7:%.*]] = icmp ne i32 [[UMIN1]], [[UMIN4]] |
| ; CHECK-V8M-NEXT: br label [[LOOP:%.*]] |
| ; CHECK-V8M: loop: |
| ; CHECK-V8M-NEXT: [[LOOP_ACC:%.*]] = phi i32 [ [[LOOP_ACC_NEXT:%.*]], [[GUARDED:%.*]] ], [ 0, [[LOOP_PREHEADER:%.*]] ] |
| ; CHECK-V8M-NEXT: [[I:%.*]] = phi i32 [ [[I_NEXT:%.*]], [[GUARDED]] ], [ 0, [[LOOP_PREHEADER]] ] |
| ; CHECK-V8M-NEXT: br i1 [[TMP7]], label [[GUARDED]], label [[DEOPT:%.*]], !prof !0 |
| ; CHECK-V8M: deopt: |
| ; CHECK-V8M-NEXT: call void @prevent_merging() |
| ; CHECK-V8M-NEXT: ret i32 -1 |
| ; CHECK-V8M: guarded: |
| ; CHECK-V8M-NEXT: [[I_I64:%.*]] = zext i32 [[I]] to i64 |
| ; CHECK-V8M-NEXT: [[ARRAY_1_I_PTR:%.*]] = getelementptr inbounds i32, i32* [[ARRAY_1:%.*]], i64 [[I_I64]] |
| ; CHECK-V8M-NEXT: [[ARRAY_1_I:%.*]] = load i32, i32* [[ARRAY_1_I_PTR]], align 4 |
| ; CHECK-V8M-NEXT: [[LOOP_ACC_1:%.*]] = add i32 [[LOOP_ACC]], [[ARRAY_1_I]] |
| ; CHECK-V8M-NEXT: [[ARRAY_2_I_PTR:%.*]] = getelementptr inbounds i32, i32* [[ARRAY_2:%.*]], i64 [[I_I64]] |
| ; CHECK-V8M-NEXT: [[ARRAY_2_I:%.*]] = load i32, i32* [[ARRAY_2_I_PTR]], align 4 |
| ; CHECK-V8M-NEXT: [[LOOP_ACC_2:%.*]] = add i32 [[LOOP_ACC_1]], [[ARRAY_2_I]] |
| ; CHECK-V8M-NEXT: [[ARRAY_3_I_PTR:%.*]] = getelementptr inbounds i32, i32* [[ARRAY_3:%.*]], i64 [[I_I64]] |
| ; CHECK-V8M-NEXT: [[ARRAY_3_I:%.*]] = load i32, i32* [[ARRAY_3_I_PTR]], align 4 |
| ; CHECK-V8M-NEXT: [[LOOP_ACC_NEXT]] = add i32 [[LOOP_ACC_2]], [[ARRAY_3_I]] |
| ; CHECK-V8M-NEXT: [[I_NEXT]] = add nuw i32 [[I]], 1 |
| ; CHECK-V8M-NEXT: [[CONTINUE:%.*]] = icmp ult i32 [[I_NEXT]], [[N]] |
| ; CHECK-V8M-NEXT: br i1 [[CONTINUE]], label [[LOOP]], label [[EXIT:%.*]] |
| ; CHECK-V8M: exit: |
| ; CHECK-V8M-NEXT: [[RESULT:%.*]] = phi i32 [ [[LOOP_ACC_NEXT]], [[GUARDED]] ] |
| ; CHECK-V8M-NEXT: ret i32 [[RESULT]] |
| ; |
| ; CHECK-V8A-LABEL: @three_range_checks( |
| ; CHECK-V8A-NEXT: loop.preheader: |
| ; CHECK-V8A-NEXT: [[TMP0:%.*]] = icmp ult i32 [[LENGTH_3:%.*]], [[LENGTH_2:%.*]] |
| ; CHECK-V8A-NEXT: [[UMIN:%.*]] = select i1 [[TMP0]], i32 [[LENGTH_3]], i32 [[LENGTH_2]] |
| ; CHECK-V8A-NEXT: [[TMP1:%.*]] = icmp ult i32 [[UMIN]], [[LENGTH_1:%.*]] |
| ; CHECK-V8A-NEXT: [[UMIN1:%.*]] = select i1 [[TMP1]], i32 [[UMIN]], i32 [[LENGTH_1]] |
| ; CHECK-V8A-NEXT: [[TMP2:%.*]] = icmp ult i32 [[LENGTH_3]], [[LENGTH_2]] |
| ; CHECK-V8A-NEXT: [[UMIN2:%.*]] = select i1 [[TMP2]], i32 [[LENGTH_3]], i32 [[LENGTH_2]] |
| ; CHECK-V8A-NEXT: [[TMP3:%.*]] = icmp ult i32 [[UMIN2]], [[LENGTH_1]] |
| ; CHECK-V8A-NEXT: [[UMIN3:%.*]] = select i1 [[TMP3]], i32 [[UMIN2]], i32 [[LENGTH_1]] |
| ; CHECK-V8A-NEXT: [[TMP4:%.*]] = icmp ugt i32 [[N:%.*]], 1 |
| ; CHECK-V8A-NEXT: [[UMAX:%.*]] = select i1 [[TMP4]], i32 [[N]], i32 1 |
| ; CHECK-V8A-NEXT: [[TMP5:%.*]] = add i32 [[UMAX]], -1 |
| ; CHECK-V8A-NEXT: [[TMP6:%.*]] = icmp ult i32 [[UMIN3]], [[TMP5]] |
| ; CHECK-V8A-NEXT: [[UMIN4:%.*]] = select i1 [[TMP6]], i32 [[UMIN3]], i32 [[TMP5]] |
| ; CHECK-V8A-NEXT: [[TMP7:%.*]] = icmp ne i32 [[UMIN1]], [[UMIN4]] |
| ; CHECK-V8A-NEXT: br label [[LOOP:%.*]] |
| ; CHECK-V8A: loop: |
| ; CHECK-V8A-NEXT: [[LOOP_ACC:%.*]] = phi i32 [ [[LOOP_ACC_NEXT:%.*]], [[GUARDED:%.*]] ], [ 0, [[LOOP_PREHEADER:%.*]] ] |
| ; CHECK-V8A-NEXT: [[I:%.*]] = phi i32 [ [[I_NEXT:%.*]], [[GUARDED]] ], [ 0, [[LOOP_PREHEADER]] ] |
| ; CHECK-V8A-NEXT: br i1 [[TMP7]], label [[GUARDED]], label [[DEOPT:%.*]], !prof !0 |
| ; CHECK-V8A: deopt: |
| ; CHECK-V8A-NEXT: call void @prevent_merging() |
| ; CHECK-V8A-NEXT: ret i32 -1 |
| ; CHECK-V8A: guarded: |
| ; CHECK-V8A-NEXT: [[I_I64:%.*]] = zext i32 [[I]] to i64 |
| ; CHECK-V8A-NEXT: [[ARRAY_1_I_PTR:%.*]] = getelementptr inbounds i32, i32* [[ARRAY_1:%.*]], i64 [[I_I64]] |
| ; CHECK-V8A-NEXT: [[ARRAY_1_I:%.*]] = load i32, i32* [[ARRAY_1_I_PTR]], align 4 |
| ; CHECK-V8A-NEXT: [[LOOP_ACC_1:%.*]] = add i32 [[LOOP_ACC]], [[ARRAY_1_I]] |
| ; CHECK-V8A-NEXT: [[ARRAY_2_I_PTR:%.*]] = getelementptr inbounds i32, i32* [[ARRAY_2:%.*]], i64 [[I_I64]] |
| ; CHECK-V8A-NEXT: [[ARRAY_2_I:%.*]] = load i32, i32* [[ARRAY_2_I_PTR]], align 4 |
| ; CHECK-V8A-NEXT: [[LOOP_ACC_2:%.*]] = add i32 [[LOOP_ACC_1]], [[ARRAY_2_I]] |
| ; CHECK-V8A-NEXT: [[ARRAY_3_I_PTR:%.*]] = getelementptr inbounds i32, i32* [[ARRAY_3:%.*]], i64 [[I_I64]] |
| ; CHECK-V8A-NEXT: [[ARRAY_3_I:%.*]] = load i32, i32* [[ARRAY_3_I_PTR]], align 4 |
| ; CHECK-V8A-NEXT: [[LOOP_ACC_NEXT]] = add i32 [[LOOP_ACC_2]], [[ARRAY_3_I]] |
| ; CHECK-V8A-NEXT: [[I_NEXT]] = add nuw i32 [[I]], 1 |
| ; CHECK-V8A-NEXT: [[CONTINUE:%.*]] = icmp ult i32 [[I_NEXT]], [[N]] |
| ; CHECK-V8A-NEXT: br i1 [[CONTINUE]], label [[LOOP]], label [[EXIT:%.*]] |
| ; CHECK-V8A: exit: |
| ; CHECK-V8A-NEXT: [[RESULT:%.*]] = phi i32 [ [[LOOP_ACC_NEXT]], [[GUARDED]] ] |
| ; CHECK-V8A-NEXT: ret i32 [[RESULT]] |
| ; |
| loop.preheader: ; preds = %entry |
| br label %loop |
| |
| loop: ; preds = %guarded, %loop.preheader |
| %loop.acc = phi i32 [ %loop.acc.next, %guarded ], [ 0, %loop.preheader ] |
| %i = phi i32 [ %i.next, %guarded ], [ 0, %loop.preheader ] |
| %within.bounds.1 = icmp ult i32 %i, %length.1 |
| %within.bounds.2 = icmp ult i32 %i, %length.2 |
| %within.bounds.3 = icmp ult i32 %i, %length.3 |
| %within.bounds.1.and.2 = and i1 %within.bounds.1, %within.bounds.2 |
| %within.bounds = and i1 %within.bounds.1.and.2, %within.bounds.3 |
| br i1 %within.bounds, label %guarded, label %deopt, !prof !0 |
| |
| deopt: ; preds = %loop |
| call void @prevent_merging() |
| ret i32 -1 |
| |
| guarded: ; preds = %loop |
| %i.i64 = zext i32 %i to i64 |
| %array.1.i.ptr = getelementptr inbounds i32, i32* %array.1, i64 %i.i64 |
| %array.1.i = load i32, i32* %array.1.i.ptr, align 4 |
| %loop.acc.1 = add i32 %loop.acc, %array.1.i |
| %array.2.i.ptr = getelementptr inbounds i32, i32* %array.2, i64 %i.i64 |
| %array.2.i = load i32, i32* %array.2.i.ptr, align 4 |
| %loop.acc.2 = add i32 %loop.acc.1, %array.2.i |
| %array.3.i.ptr = getelementptr inbounds i32, i32* %array.3, i64 %i.i64 |
| %array.3.i = load i32, i32* %array.3.i.ptr, align 4 |
| %loop.acc.next = add i32 %loop.acc.2, %array.3.i |
| %i.next = add nuw i32 %i, 1 |
| %continue = icmp ult i32 %i.next, %n |
| br i1 %continue, label %loop, label %exit |
| |
| exit: ; preds = %guarded, %entry |
| %result = phi i32 [ %loop.acc.next, %guarded ] |
| ret i32 %result |
| } |
| |
| ; Analogous to the above, but with two distinct branches (on different conditions) |
| define i32 @distinct_checks(i32* %array.1, i32 %length.1, i32* %array.2, i32 %length.2, i32* %array.3, i32 %length.3, i32 %n) #0 { |
| ; CHECK-V8M-LABEL: @distinct_checks( |
| ; CHECK-V8M-NEXT: loop.preheader: |
| ; CHECK-V8M-NEXT: [[TMP0:%.*]] = icmp ult i32 [[LENGTH_2:%.*]], [[LENGTH_1:%.*]] |
| ; CHECK-V8M-NEXT: [[UMIN:%.*]] = select i1 [[TMP0]], i32 [[LENGTH_2]], i32 [[LENGTH_1]] |
| ; CHECK-V8M-NEXT: [[TMP1:%.*]] = icmp ugt i32 [[N:%.*]], 1 |
| ; CHECK-V8M-NEXT: [[UMAX:%.*]] = select i1 [[TMP1]], i32 [[N]], i32 1 |
| ; CHECK-V8M-NEXT: [[TMP2:%.*]] = add i32 [[UMAX]], -1 |
| ; CHECK-V8M-NEXT: [[TMP3:%.*]] = icmp ult i32 [[UMIN]], [[TMP2]] |
| ; CHECK-V8M-NEXT: [[UMIN1:%.*]] = select i1 [[TMP3]], i32 [[UMIN]], i32 [[TMP2]] |
| ; CHECK-V8M-NEXT: [[TMP4:%.*]] = icmp ne i32 [[LENGTH_1]], [[UMIN1]] |
| ; CHECK-V8M-NEXT: [[TMP5:%.*]] = icmp ne i32 [[LENGTH_2]], [[UMIN1]] |
| ; CHECK-V8M-NEXT: br label [[LOOP:%.*]] |
| ; CHECK-V8M: loop: |
| ; CHECK-V8M-NEXT: [[LOOP_ACC:%.*]] = phi i32 [ [[LOOP_ACC_NEXT:%.*]], [[GUARDED1:%.*]] ], [ 0, [[LOOP_PREHEADER:%.*]] ] |
| ; CHECK-V8M-NEXT: [[I:%.*]] = phi i32 [ [[I_NEXT:%.*]], [[GUARDED1]] ], [ 0, [[LOOP_PREHEADER]] ] |
| ; CHECK-V8M-NEXT: br i1 [[TMP4]], label [[GUARDED:%.*]], label [[DEOPT:%.*]], !prof !0 |
| ; CHECK-V8M: deopt: |
| ; CHECK-V8M-NEXT: call void @prevent_merging() |
| ; CHECK-V8M-NEXT: ret i32 -1 |
| ; CHECK-V8M: guarded: |
| ; CHECK-V8M-NEXT: [[I_I64:%.*]] = zext i32 [[I]] to i64 |
| ; CHECK-V8M-NEXT: [[ARRAY_1_I_PTR:%.*]] = getelementptr inbounds i32, i32* [[ARRAY_1:%.*]], i64 [[I_I64]] |
| ; CHECK-V8M-NEXT: [[ARRAY_1_I:%.*]] = load i32, i32* [[ARRAY_1_I_PTR]], align 4 |
| ; CHECK-V8M-NEXT: [[LOOP_ACC_1:%.*]] = add i32 [[LOOP_ACC]], [[ARRAY_1_I]] |
| ; CHECK-V8M-NEXT: br i1 [[TMP5]], label [[GUARDED1]], label [[DEOPT2:%.*]], !prof !0 |
| ; CHECK-V8M: deopt2: |
| ; CHECK-V8M-NEXT: call void @prevent_merging() |
| ; CHECK-V8M-NEXT: ret i32 -1 |
| ; CHECK-V8M: guarded1: |
| ; CHECK-V8M-NEXT: [[ARRAY_3_I_PTR:%.*]] = getelementptr inbounds i32, i32* [[ARRAY_3:%.*]], i64 [[I_I64]] |
| ; CHECK-V8M-NEXT: [[ARRAY_3_I:%.*]] = load i32, i32* [[ARRAY_3_I_PTR]], align 4 |
| ; CHECK-V8M-NEXT: [[LOOP_ACC_NEXT]] = add i32 [[LOOP_ACC_1]], [[ARRAY_3_I]] |
| ; CHECK-V8M-NEXT: [[I_NEXT]] = add nuw i32 [[I]], 1 |
| ; CHECK-V8M-NEXT: [[CONTINUE:%.*]] = icmp ult i32 [[I_NEXT]], [[N]] |
| ; CHECK-V8M-NEXT: br i1 [[CONTINUE]], label [[LOOP]], label [[EXIT:%.*]] |
| ; CHECK-V8M: exit: |
| ; CHECK-V8M-NEXT: [[RESULT:%.*]] = phi i32 [ [[LOOP_ACC_NEXT]], [[GUARDED1]] ] |
| ; CHECK-V8M-NEXT: ret i32 [[RESULT]] |
| ; |
| ; CHECK-V8A-LABEL: @distinct_checks( |
| ; CHECK-V8A-NEXT: loop.preheader: |
| ; CHECK-V8A-NEXT: [[TMP0:%.*]] = icmp ult i32 [[LENGTH_2:%.*]], [[LENGTH_1:%.*]] |
| ; CHECK-V8A-NEXT: [[UMIN:%.*]] = select i1 [[TMP0]], i32 [[LENGTH_2]], i32 [[LENGTH_1]] |
| ; CHECK-V8A-NEXT: [[TMP1:%.*]] = icmp ugt i32 [[N:%.*]], 1 |
| ; CHECK-V8A-NEXT: [[UMAX:%.*]] = select i1 [[TMP1]], i32 [[N]], i32 1 |
| ; CHECK-V8A-NEXT: [[TMP2:%.*]] = add i32 [[UMAX]], -1 |
| ; CHECK-V8A-NEXT: [[TMP3:%.*]] = icmp ult i32 [[UMIN]], [[TMP2]] |
| ; CHECK-V8A-NEXT: [[UMIN1:%.*]] = select i1 [[TMP3]], i32 [[UMIN]], i32 [[TMP2]] |
| ; CHECK-V8A-NEXT: [[TMP4:%.*]] = icmp ne i32 [[LENGTH_1]], [[UMIN1]] |
| ; CHECK-V8A-NEXT: [[TMP5:%.*]] = icmp ne i32 [[LENGTH_2]], [[UMIN1]] |
| ; CHECK-V8A-NEXT: br label [[LOOP:%.*]] |
| ; CHECK-V8A: loop: |
| ; CHECK-V8A-NEXT: [[LOOP_ACC:%.*]] = phi i32 [ [[LOOP_ACC_NEXT:%.*]], [[GUARDED1:%.*]] ], [ 0, [[LOOP_PREHEADER:%.*]] ] |
| ; CHECK-V8A-NEXT: [[I:%.*]] = phi i32 [ [[I_NEXT:%.*]], [[GUARDED1]] ], [ 0, [[LOOP_PREHEADER]] ] |
| ; CHECK-V8A-NEXT: br i1 [[TMP4]], label [[GUARDED:%.*]], label [[DEOPT:%.*]], !prof !0 |
| ; CHECK-V8A: deopt: |
| ; CHECK-V8A-NEXT: call void @prevent_merging() |
| ; CHECK-V8A-NEXT: ret i32 -1 |
| ; CHECK-V8A: guarded: |
| ; CHECK-V8A-NEXT: [[I_I64:%.*]] = zext i32 [[I]] to i64 |
| ; CHECK-V8A-NEXT: [[ARRAY_1_I_PTR:%.*]] = getelementptr inbounds i32, i32* [[ARRAY_1:%.*]], i64 [[I_I64]] |
| ; CHECK-V8A-NEXT: [[ARRAY_1_I:%.*]] = load i32, i32* [[ARRAY_1_I_PTR]], align 4 |
| ; CHECK-V8A-NEXT: [[LOOP_ACC_1:%.*]] = add i32 [[LOOP_ACC]], [[ARRAY_1_I]] |
| ; CHECK-V8A-NEXT: br i1 [[TMP5]], label [[GUARDED1]], label [[DEOPT2:%.*]], !prof !0 |
| ; CHECK-V8A: deopt2: |
| ; CHECK-V8A-NEXT: call void @prevent_merging() |
| ; CHECK-V8A-NEXT: ret i32 -1 |
| ; CHECK-V8A: guarded1: |
| ; CHECK-V8A-NEXT: [[ARRAY_3_I_PTR:%.*]] = getelementptr inbounds i32, i32* [[ARRAY_3:%.*]], i64 [[I_I64]] |
| ; CHECK-V8A-NEXT: [[ARRAY_3_I:%.*]] = load i32, i32* [[ARRAY_3_I_PTR]], align 4 |
| ; CHECK-V8A-NEXT: [[LOOP_ACC_NEXT]] = add i32 [[LOOP_ACC_1]], [[ARRAY_3_I]] |
| ; CHECK-V8A-NEXT: [[I_NEXT]] = add nuw i32 [[I]], 1 |
| ; CHECK-V8A-NEXT: [[CONTINUE:%.*]] = icmp ult i32 [[I_NEXT]], [[N]] |
| ; CHECK-V8A-NEXT: br i1 [[CONTINUE]], label [[LOOP]], label [[EXIT:%.*]] |
| ; CHECK-V8A: exit: |
| ; CHECK-V8A-NEXT: [[RESULT:%.*]] = phi i32 [ [[LOOP_ACC_NEXT]], [[GUARDED1]] ] |
| ; CHECK-V8A-NEXT: ret i32 [[RESULT]] |
| ; |
| loop.preheader: ; preds = %entry |
| br label %loop |
| |
| loop: ; preds = %guarded4, %loop.preheader |
| %loop.acc = phi i32 [ %loop.acc.next, %guarded1 ], [ 0, %loop.preheader ] |
| %i = phi i32 [ %i.next, %guarded1 ], [ 0, %loop.preheader ] |
| %within.bounds.1 = icmp ult i32 %i, %length.1 |
| br i1 %within.bounds.1, label %guarded, label %deopt, !prof !0 |
| |
| deopt: ; preds = %loop |
| call void @prevent_merging() |
| ret i32 -1 |
| |
| guarded: ; preds = %loop |
| %i.i64 = zext i32 %i to i64 |
| %array.1.i.ptr = getelementptr inbounds i32, i32* %array.1, i64 %i.i64 |
| %array.1.i = load i32, i32* %array.1.i.ptr, align 4 |
| %loop.acc.1 = add i32 %loop.acc, %array.1.i |
| %within.bounds.2 = icmp ult i32 %i, %length.2 |
| br i1 %within.bounds.2, label %guarded1, label %deopt2, !prof !0 |
| |
| deopt2: ; preds = %guarded |
| call void @prevent_merging() |
| ret i32 -1 |
| |
| guarded1: ; preds = %guarded1 |
| %array.3.i.ptr = getelementptr inbounds i32, i32* %array.3, i64 %i.i64 |
| %array.3.i = load i32, i32* %array.3.i.ptr, align 4 |
| %loop.acc.next = add i32 %loop.acc.1, %array.3.i |
| %i.next = add nuw i32 %i, 1 |
| %continue = icmp ult i32 %i.next, %n |
| br i1 %continue, label %loop, label %exit |
| |
| exit: |
| %result = phi i32 [ %loop.acc.next, %guarded1 ] |
| ret i32 %result |
| } |
| |
| define i32 @duplicate_checks(i32* %array.1, i32* %array.2, i32* %array.3, i32 %length, i32 %n) #0 { |
| ; CHECK-V8M-LABEL: @duplicate_checks( |
| ; CHECK-V8M-NEXT: loop.preheader: |
| ; CHECK-V8M-NEXT: [[TMP0:%.*]] = icmp ugt i32 [[N:%.*]], 1 |
| ; CHECK-V8M-NEXT: [[UMAX:%.*]] = select i1 [[TMP0]], i32 [[N]], i32 1 |
| ; CHECK-V8M-NEXT: [[TMP1:%.*]] = add i32 [[UMAX]], -1 |
| ; CHECK-V8M-NEXT: [[TMP2:%.*]] = icmp ult i32 [[LENGTH:%.*]], [[TMP1]] |
| ; CHECK-V8M-NEXT: [[UMIN:%.*]] = select i1 [[TMP2]], i32 [[LENGTH]], i32 [[TMP1]] |
| ; CHECK-V8M-NEXT: [[TMP3:%.*]] = icmp ne i32 [[LENGTH]], [[UMIN]] |
| ; CHECK-V8M-NEXT: br label [[LOOP:%.*]] |
| ; CHECK-V8M: loop: |
| ; CHECK-V8M-NEXT: [[LOOP_ACC:%.*]] = phi i32 [ [[LOOP_ACC_NEXT:%.*]], [[GUARDED1:%.*]] ], [ 0, [[LOOP_PREHEADER:%.*]] ] |
| ; CHECK-V8M-NEXT: [[I:%.*]] = phi i32 [ [[I_NEXT:%.*]], [[GUARDED1]] ], [ 0, [[LOOP_PREHEADER]] ] |
| ; CHECK-V8M-NEXT: br i1 [[TMP3]], label [[GUARDED:%.*]], label [[DEOPT:%.*]], !prof !0 |
| ; CHECK-V8M: deopt: |
| ; CHECK-V8M-NEXT: call void @prevent_merging() |
| ; CHECK-V8M-NEXT: ret i32 -1 |
| ; CHECK-V8M: guarded: |
| ; CHECK-V8M-NEXT: [[I_I64:%.*]] = zext i32 [[I]] to i64 |
| ; CHECK-V8M-NEXT: [[ARRAY_1_I_PTR:%.*]] = getelementptr inbounds i32, i32* [[ARRAY_1:%.*]], i64 [[I_I64]] |
| ; CHECK-V8M-NEXT: [[ARRAY_1_I:%.*]] = load i32, i32* [[ARRAY_1_I_PTR]], align 4 |
| ; CHECK-V8M-NEXT: [[LOOP_ACC_1:%.*]] = add i32 [[LOOP_ACC]], [[ARRAY_1_I]] |
| ; CHECK-V8M-NEXT: br i1 true, label [[GUARDED1]], label [[DEOPT2:%.*]], !prof !0 |
| ; CHECK-V8M: deopt2: |
| ; CHECK-V8M-NEXT: call void @prevent_merging() |
| ; CHECK-V8M-NEXT: ret i32 -1 |
| ; CHECK-V8M: guarded1: |
| ; CHECK-V8M-NEXT: [[ARRAY_3_I_PTR:%.*]] = getelementptr inbounds i32, i32* [[ARRAY_3:%.*]], i64 [[I_I64]] |
| ; CHECK-V8M-NEXT: [[ARRAY_3_I:%.*]] = load i32, i32* [[ARRAY_3_I_PTR]], align 4 |
| ; CHECK-V8M-NEXT: [[LOOP_ACC_NEXT]] = add i32 [[LOOP_ACC_1]], [[ARRAY_3_I]] |
| ; CHECK-V8M-NEXT: [[I_NEXT]] = add nuw i32 [[I]], 1 |
| ; CHECK-V8M-NEXT: [[CONTINUE:%.*]] = icmp ult i32 [[I_NEXT]], [[N]] |
| ; CHECK-V8M-NEXT: br i1 [[CONTINUE]], label [[LOOP]], label [[EXIT:%.*]] |
| ; CHECK-V8M: exit: |
| ; CHECK-V8M-NEXT: [[RESULT:%.*]] = phi i32 [ [[LOOP_ACC_NEXT]], [[GUARDED1]] ] |
| ; CHECK-V8M-NEXT: ret i32 [[RESULT]] |
| ; |
| ; CHECK-V8A-LABEL: @duplicate_checks( |
| ; CHECK-V8A-NEXT: loop.preheader: |
| ; CHECK-V8A-NEXT: [[TMP0:%.*]] = icmp ugt i32 [[N:%.*]], 1 |
| ; CHECK-V8A-NEXT: [[UMAX:%.*]] = select i1 [[TMP0]], i32 [[N]], i32 1 |
| ; CHECK-V8A-NEXT: [[TMP1:%.*]] = add i32 [[UMAX]], -1 |
| ; CHECK-V8A-NEXT: [[TMP2:%.*]] = icmp ult i32 [[LENGTH:%.*]], [[TMP1]] |
| ; CHECK-V8A-NEXT: [[UMIN:%.*]] = select i1 [[TMP2]], i32 [[LENGTH]], i32 [[TMP1]] |
| ; CHECK-V8A-NEXT: [[TMP3:%.*]] = icmp ne i32 [[LENGTH]], [[UMIN]] |
| ; CHECK-V8A-NEXT: br label [[LOOP:%.*]] |
| ; CHECK-V8A: loop: |
| ; CHECK-V8A-NEXT: [[LOOP_ACC:%.*]] = phi i32 [ [[LOOP_ACC_NEXT:%.*]], [[GUARDED1:%.*]] ], [ 0, [[LOOP_PREHEADER:%.*]] ] |
| ; CHECK-V8A-NEXT: [[I:%.*]] = phi i32 [ [[I_NEXT:%.*]], [[GUARDED1]] ], [ 0, [[LOOP_PREHEADER]] ] |
| ; CHECK-V8A-NEXT: br i1 [[TMP3]], label [[GUARDED:%.*]], label [[DEOPT:%.*]], !prof !0 |
| ; CHECK-V8A: deopt: |
| ; CHECK-V8A-NEXT: call void @prevent_merging() |
| ; CHECK-V8A-NEXT: ret i32 -1 |
| ; CHECK-V8A: guarded: |
| ; CHECK-V8A-NEXT: [[I_I64:%.*]] = zext i32 [[I]] to i64 |
| ; CHECK-V8A-NEXT: [[ARRAY_1_I_PTR:%.*]] = getelementptr inbounds i32, i32* [[ARRAY_1:%.*]], i64 [[I_I64]] |
| ; CHECK-V8A-NEXT: [[ARRAY_1_I:%.*]] = load i32, i32* [[ARRAY_1_I_PTR]], align 4 |
| ; CHECK-V8A-NEXT: [[LOOP_ACC_1:%.*]] = add i32 [[LOOP_ACC]], [[ARRAY_1_I]] |
| ; CHECK-V8A-NEXT: br i1 true, label [[GUARDED1]], label [[DEOPT2:%.*]], !prof !0 |
| ; CHECK-V8A: deopt2: |
| ; CHECK-V8A-NEXT: call void @prevent_merging() |
| ; CHECK-V8A-NEXT: ret i32 -1 |
| ; CHECK-V8A: guarded1: |
| ; CHECK-V8A-NEXT: [[ARRAY_3_I_PTR:%.*]] = getelementptr inbounds i32, i32* [[ARRAY_3:%.*]], i64 [[I_I64]] |
| ; CHECK-V8A-NEXT: [[ARRAY_3_I:%.*]] = load i32, i32* [[ARRAY_3_I_PTR]], align 4 |
| ; CHECK-V8A-NEXT: [[LOOP_ACC_NEXT]] = add i32 [[LOOP_ACC_1]], [[ARRAY_3_I]] |
| ; CHECK-V8A-NEXT: [[I_NEXT]] = add nuw i32 [[I]], 1 |
| ; CHECK-V8A-NEXT: [[CONTINUE:%.*]] = icmp ult i32 [[I_NEXT]], [[N]] |
| ; CHECK-V8A-NEXT: br i1 [[CONTINUE]], label [[LOOP]], label [[EXIT:%.*]] |
| ; CHECK-V8A: exit: |
| ; CHECK-V8A-NEXT: [[RESULT:%.*]] = phi i32 [ [[LOOP_ACC_NEXT]], [[GUARDED1]] ] |
| ; CHECK-V8A-NEXT: ret i32 [[RESULT]] |
| ; |
| loop.preheader: ; preds = %entry |
| br label %loop |
| |
| loop: ; preds = %guarded4, %loop.preheader |
| %loop.acc = phi i32 [ %loop.acc.next, %guarded1 ], [ 0, %loop.preheader ] |
| %i = phi i32 [ %i.next, %guarded1 ], [ 0, %loop.preheader ] |
| %within.bounds.1 = icmp ult i32 %i, %length |
| br i1 %within.bounds.1, label %guarded, label %deopt, !prof !0 |
| |
| deopt: ; preds = %loop |
| call void @prevent_merging() |
| ret i32 -1 |
| |
| guarded: ; preds = %loop |
| %i.i64 = zext i32 %i to i64 |
| %array.1.i.ptr = getelementptr inbounds i32, i32* %array.1, i64 %i.i64 |
| %array.1.i = load i32, i32* %array.1.i.ptr, align 4 |
| %loop.acc.1 = add i32 %loop.acc, %array.1.i |
| %within.bounds.2 = icmp ult i32 %i, %length |
| br i1 %within.bounds.2, label %guarded1, label %deopt2, !prof !0 |
| |
| deopt2: ; preds = %guarded |
| call void @prevent_merging() |
| ret i32 -1 |
| |
| guarded1: ; preds = %guarded1 |
| %array.3.i.ptr = getelementptr inbounds i32, i32* %array.3, i64 %i.i64 |
| %array.3.i = load i32, i32* %array.3.i.ptr, align 4 |
| %loop.acc.next = add i32 %loop.acc.1, %array.3.i |
| %i.next = add nuw i32 %i, 1 |
| %continue = icmp ult i32 %i.next, %n |
| br i1 %continue, label %loop, label %exit |
| |
| exit: |
| %result = phi i32 [ %loop.acc.next, %guarded1 ] |
| ret i32 %result |
| } |
| |
| ; Demonstrate that this approach works with IVs of different steps, and types |
| ; This version uses a manually lftred exit condition to work around an issue described |
| ; in detail on next test. |
| define i32 @different_ivs(i32* %array, i32 %length, i32 %n) #0 { |
| ; CHECK-V8M-LABEL: @different_ivs( |
| ; CHECK-V8M-NEXT: loop.preheader: |
| ; CHECK-V8M-NEXT: [[N64:%.*]] = zext i32 [[N:%.*]] to i64 |
| ; CHECK-V8M-NEXT: [[TMP0:%.*]] = icmp ugt i64 [[N64]], 1 |
| ; CHECK-V8M-NEXT: [[UMAX:%.*]] = select i1 [[TMP0]], i64 [[N64]], i64 1 |
| ; CHECK-V8M-NEXT: [[TMP1:%.*]] = add nsw i64 [[UMAX]], -1 |
| ; CHECK-V8M-NEXT: [[TMP2:%.*]] = zext i32 [[LENGTH:%.*]] to i64 |
| ; CHECK-V8M-NEXT: [[TMP3:%.*]] = icmp ult i64 [[TMP1]], [[TMP2]] |
| ; CHECK-V8M-NEXT: [[UMIN:%.*]] = select i1 [[TMP3]], i64 [[TMP1]], i64 [[TMP2]] |
| ; CHECK-V8M-NEXT: [[TMP4:%.*]] = zext i32 [[LENGTH]] to i64 |
| ; CHECK-V8M-NEXT: [[TMP5:%.*]] = icmp ne i64 [[TMP4]], [[UMIN]] |
| ; CHECK-V8M-NEXT: br label [[LOOP:%.*]] |
| ; CHECK-V8M: loop: |
| ; CHECK-V8M-NEXT: [[LOOP_ACC:%.*]] = phi i32 [ [[LOOP_ACC_NEXT:%.*]], [[GUARDED:%.*]] ], [ 0, [[LOOP_PREHEADER:%.*]] ] |
| ; CHECK-V8M-NEXT: [[I:%.*]] = phi i64 [ [[I_NEXT:%.*]], [[GUARDED]] ], [ 0, [[LOOP_PREHEADER]] ] |
| ; CHECK-V8M-NEXT: br i1 [[TMP5]], label [[GUARDED]], label [[DEOPT:%.*]], !prof !0 |
| ; CHECK-V8M: deopt: |
| ; CHECK-V8M-NEXT: call void @prevent_merging() |
| ; CHECK-V8M-NEXT: ret i32 -1 |
| ; CHECK-V8M: guarded: |
| ; CHECK-V8M-NEXT: [[ARRAY_I_PTR:%.*]] = getelementptr inbounds i32, i32* [[ARRAY:%.*]], i64 [[I]] |
| ; CHECK-V8M-NEXT: [[ARRAY_I:%.*]] = load i32, i32* [[ARRAY_I_PTR]], align 4 |
| ; CHECK-V8M-NEXT: [[LOOP_ACC_NEXT]] = add i32 [[LOOP_ACC]], [[ARRAY_I]] |
| ; CHECK-V8M-NEXT: [[I_NEXT]] = add nuw nsw i64 [[I]], 1 |
| ; CHECK-V8M-NEXT: [[CONTINUE:%.*]] = icmp ult i64 [[I_NEXT]], [[N64]] |
| ; CHECK-V8M-NEXT: br i1 [[CONTINUE]], label [[LOOP]], label [[EXIT:%.*]] |
| ; CHECK-V8M: exit: |
| ; CHECK-V8M-NEXT: [[RESULT:%.*]] = phi i32 [ [[LOOP_ACC_NEXT]], [[GUARDED]] ] |
| ; CHECK-V8M-NEXT: ret i32 [[RESULT]] |
| ; |
| ; CHECK-V8A-LABEL: @different_ivs( |
| ; CHECK-V8A-NEXT: loop.preheader: |
| ; CHECK-V8A-NEXT: [[N64:%.*]] = zext i32 [[N:%.*]] to i64 |
| ; CHECK-V8A-NEXT: [[TMP0:%.*]] = icmp ugt i64 [[N64]], 1 |
| ; CHECK-V8A-NEXT: [[UMAX:%.*]] = select i1 [[TMP0]], i64 [[N64]], i64 1 |
| ; CHECK-V8A-NEXT: [[TMP1:%.*]] = add nsw i64 [[UMAX]], -1 |
| ; CHECK-V8A-NEXT: [[TMP2:%.*]] = zext i32 [[LENGTH:%.*]] to i64 |
| ; CHECK-V8A-NEXT: [[TMP3:%.*]] = icmp ult i64 [[TMP1]], [[TMP2]] |
| ; CHECK-V8A-NEXT: [[UMIN:%.*]] = select i1 [[TMP3]], i64 [[TMP1]], i64 [[TMP2]] |
| ; CHECK-V8A-NEXT: [[TMP4:%.*]] = zext i32 [[LENGTH]] to i64 |
| ; CHECK-V8A-NEXT: [[TMP5:%.*]] = icmp ne i64 [[TMP4]], [[UMIN]] |
| ; CHECK-V8A-NEXT: br label [[LOOP:%.*]] |
| ; CHECK-V8A: loop: |
| ; CHECK-V8A-NEXT: [[LOOP_ACC:%.*]] = phi i32 [ [[LOOP_ACC_NEXT:%.*]], [[GUARDED:%.*]] ], [ 0, [[LOOP_PREHEADER:%.*]] ] |
| ; CHECK-V8A-NEXT: [[I:%.*]] = phi i64 [ [[I_NEXT:%.*]], [[GUARDED]] ], [ 0, [[LOOP_PREHEADER]] ] |
| ; CHECK-V8A-NEXT: br i1 [[TMP5]], label [[GUARDED]], label [[DEOPT:%.*]], !prof !0 |
| ; CHECK-V8A: deopt: |
| ; CHECK-V8A-NEXT: call void @prevent_merging() |
| ; CHECK-V8A-NEXT: ret i32 -1 |
| ; CHECK-V8A: guarded: |
| ; CHECK-V8A-NEXT: [[ARRAY_I_PTR:%.*]] = getelementptr inbounds i32, i32* [[ARRAY:%.*]], i64 [[I]] |
| ; CHECK-V8A-NEXT: [[ARRAY_I:%.*]] = load i32, i32* [[ARRAY_I_PTR]], align 4 |
| ; CHECK-V8A-NEXT: [[LOOP_ACC_NEXT]] = add i32 [[LOOP_ACC]], [[ARRAY_I]] |
| ; CHECK-V8A-NEXT: [[I_NEXT]] = add nuw nsw i64 [[I]], 1 |
| ; CHECK-V8A-NEXT: [[CONTINUE:%.*]] = icmp ult i64 [[I_NEXT]], [[N64]] |
| ; CHECK-V8A-NEXT: br i1 [[CONTINUE]], label [[LOOP]], label [[EXIT:%.*]] |
| ; CHECK-V8A: exit: |
| ; CHECK-V8A-NEXT: [[RESULT:%.*]] = phi i32 [ [[LOOP_ACC_NEXT]], [[GUARDED]] ] |
| ; CHECK-V8A-NEXT: ret i32 [[RESULT]] |
| ; |
| loop.preheader: |
| %j.start = sub nuw nsw i32 %length, 1 |
| %n64 = zext i32 %n to i64 |
| br label %loop |
| |
| loop: |
| %loop.acc = phi i32 [ %loop.acc.next, %guarded ], [ 0, %loop.preheader ] |
| %i = phi i64 [ %i.next, %guarded ], [ 0, %loop.preheader ] |
| %j = phi i32 [ %j.next, %guarded ], [ %j.start, %loop.preheader ] |
| %within.bounds = icmp ne i32 %j, -1 |
| br i1 %within.bounds, label %guarded, label %deopt, !prof !0 |
| |
| deopt: |
| call void @prevent_merging() |
| ret i32 -1 |
| |
| guarded: |
| %array.i.ptr = getelementptr inbounds i32, i32* %array, i64 %i |
| %array.i = load i32, i32* %array.i.ptr, align 4 |
| %loop.acc.next = add i32 %loop.acc, %array.i |
| %i.next = add nuw i64 %i, 1 |
| %j.next = sub nuw i32 %j, 1 |
| %continue = icmp ult i64 %i.next, %n64 |
| br i1 %continue, label %loop, label %exit |
| |
| exit: |
| %result = phi i32 [ %loop.acc.next, %guarded ] |
| ret i32 %result |
| } |
| |
| declare void @prevent_merging() |
| declare void @call() |
| |
| !0 = !{!"branch_weights", i32 1048576, i32 1} |
| !1 = !{i32 1, i32 -2147483648} |
| !2 = !{i32 0, i32 50} |
| |
| attributes #0 = { minsize optsize } |
