| ; RUN: opt -S -simplifycfg < %s | FileCheck -enable-var-scope %s |
| target datalayout = "E-m:e-i64:64-n32:64" |
| target triple = "powerpc64-unknown-linux-gnu" |
| |
| define i64 @test1(i64 %A) { |
| ; CHECK-LABEL: @test1( |
| ; CHECK: [[ICMP:%[A-Za-z0-9]+]] = icmp eq i64 %A, 0 |
| ; CHECK-NEXT: [[CTLZ:%[A-Za-z0-9]+]] = tail call i64 @llvm.ctlz.i64(i64 %A, i1 true) |
| ; CHECK-NEXT: [[SEL:%[A-Za-z0-9.]+]] = select i1 [[ICMP]], i64 64, i64 [[CTLZ]] |
| ; CHECK-NEXT: ret i64 [[SEL]] |
| entry: |
| %tobool = icmp eq i64 %A, 0 |
| br i1 %tobool, label %cond.end, label %cond.true |
| |
| cond.true: ; preds = %entry |
| %0 = tail call i64 @llvm.ctlz.i64(i64 %A, i1 true) |
| br label %cond.end |
| |
| cond.end: ; preds = %entry, %cond.true |
| %cond = phi i64 [ %0, %cond.true ], [ 64, %entry ] |
| ret i64 %cond |
| } |
| |
| define i64 @test1b(i64 %A) { |
| ; CHECK-LABEL: @test1b( |
| ; CHECK: [[ICMP:%[A-Za-z0-9]+]] = icmp eq i64 %A, 0 |
| ; CHECK-NEXT: [[CTTZ:%[A-Za-z0-9]+]] = tail call i64 @llvm.cttz.i64(i64 %A, i1 true) |
| ; CHECK-NEXT: [[SEL:%[A-Za-z0-9.]+]] = select i1 [[ICMP]], i64 64, i64 [[CTTZ]] |
| ; CHECK-NEXT: ret i64 [[SEL]] |
| entry: |
| %tobool = icmp eq i64 %A, 0 |
| br i1 %tobool, label %cond.end, label %cond.true |
| |
| cond.true: ; preds = %entry |
| %0 = tail call i64 @llvm.cttz.i64(i64 %A, i1 true) |
| br label %cond.end |
| |
| cond.end: ; preds = %entry, %cond.true |
| %cond = phi i64 [ %0, %cond.true ], [ 64, %entry ] |
| ret i64 %cond |
| } |
| |
| declare i64 @llvm.ctlz.i64(i64, i1) |
| declare i64 @llvm.cttz.i64(i64, i1) |
| |