| ; RUN: opt < %s -constprop -die -S | FileCheck %s |
| |
| ; This is a basic sanity check for constant propogation. The add instruction |
| ; should be eliminated. |
| define i32 @test1(i1 %B) { |
| br i1 %B, label %BB1, label %BB2 |
| |
| BB1: |
| %Val = add i32 0, 0 |
| br label %BB3 |
| |
| BB2: |
| br label %BB3 |
| |
| BB3: |
| ; CHECK: @test1 |
| ; CHECK: %Ret = phi i32 [ 0, %BB1 ], [ 1, %BB2 ] |
| %Ret = phi i32 [ %Val, %BB1 ], [ 1, %BB2 ] |
| ret i32 %Ret |
| } |
| |
| |
| ; PR6197 |
| define i1 @test2(i8* %f) nounwind { |
| entry: |
| %V = icmp ne i8* blockaddress(@test2, %bb), null |
| br label %bb |
| bb: |
| ret i1 %V |
| |
| ; CHECK: @test2 |
| ; CHECK: ret i1 true |
| } |
| |
| define i1 @TNAN() { |
| ; CHECK: @TNAN |
| ; CHECK: ret i1 true |
| %A = fcmp uno double 0x7FF8000000000000, 1.000000e+00 |
| %B = fcmp uno double 1.230000e+02, 1.000000e+00 |
| %C = or i1 %A, %B |
| ret i1 %C |
| } |
