| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -S -simplifycfg -mtriple=arm -mattr=+v6t2 < %s | FileCheck %s |
| |
| define i32 @ctlz(i32 %A) { |
| ; CHECK-LABEL: @ctlz( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[A:%.*]], 0 |
| ; CHECK-NEXT: [[TMP0:%.*]] = tail call i32 @llvm.ctlz.i32(i32 [[A]], i1 true) |
| ; CHECK-NEXT: [[SPEC_SELECT:%.*]] = select i1 [[TOBOOL]], i32 32, i32 [[TMP0]] |
| ; CHECK-NEXT: ret i32 [[SPEC_SELECT]] |
| ; |
| entry: |
| %tobool = icmp eq i32 %A, 0 |
| br i1 %tobool, label %cond.end, label %cond.true |
| |
| cond.true: |
| %0 = tail call i32 @llvm.ctlz.i32(i32 %A, i1 true) |
| br label %cond.end |
| |
| cond.end: |
| %cond = phi i32 [ %0, %cond.true ], [ 32, %entry ] |
| ret i32 %cond |
| } |
| |
| define i32 @cttz(i32 %A) { |
| ; CHECK-LABEL: @cttz( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[A:%.*]], 0 |
| ; CHECK-NEXT: [[TMP0:%.*]] = tail call i32 @llvm.cttz.i32(i32 [[A]], i1 true) |
| ; CHECK-NEXT: [[SPEC_SELECT:%.*]] = select i1 [[TOBOOL]], i32 32, i32 [[TMP0]] |
| ; CHECK-NEXT: ret i32 [[SPEC_SELECT]] |
| ; |
| entry: |
| %tobool = icmp eq i32 %A, 0 |
| br i1 %tobool, label %cond.end, label %cond.true |
| |
| cond.true: |
| %0 = tail call i32 @llvm.cttz.i32(i32 %A, i1 true) |
| br label %cond.end |
| |
| cond.end: |
| %cond = phi i32 [ %0, %cond.true ], [ 32, %entry ] |
| ret i32 %cond |
| } |
| |
| declare i32 @llvm.ctlz.i32(i32, i1) |
| declare i32 @llvm.cttz.i32(i32, i1) |
| |