| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ;RUN: opt -instcombine -S %s | FileCheck %s |
| |
| @A = extern_weak global i32, align 4 |
| @B = extern_weak global i32, align 4 |
| |
| define i32 @foo(i1 %which) { |
| ; CHECK-LABEL: @foo( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br i1 true, label [[FINAL:%.*]], label [[DELAY:%.*]] |
| ; CHECK: delay: |
| ; CHECK-NEXT: br label [[FINAL]] |
| ; CHECK: final: |
| ; CHECK-NEXT: [[USE2:%.*]] = phi i32 [ 1, [[ENTRY:%.*]] ], [ select (i1 icmp eq (i32* @A, i32* @B), i32 2, i32 1), [[DELAY]] ] |
| ; CHECK-NEXT: [[B7:%.*]] = mul i32 [[USE2]], 2147483647 |
| ; CHECK-NEXT: [[C3:%.*]] = icmp eq i32 [[B7]], 0 |
| ; CHECK-NEXT: store i1 [[C3]], i1* undef, align 1 |
| ; CHECK-NEXT: ret i32 [[USE2]] |
| ; |
| entry: |
| br i1 true, label %final, label %delay |
| |
| delay: ; preds = %entry |
| br label %final |
| |
| final: ; preds = %delay, %entry |
| %use2 = phi i1 [ false, %entry ], [ icmp eq (i32* @A, i32* @B), %delay ] |
| %value = select i1 %use2, i32 2, i32 1 |
| %B7 = mul i32 %value, 2147483647 |
| %C3 = icmp ule i32 %B7, 0 |
| store i1 %C3, i1* undef |
| ret i32 %value |
| } |
