| ; RUN: opt -codegenprepare -S < %s | FileCheck %s |
| |
| target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" |
| target triple = "x86_64-apple-darwin10.0.0" |
| |
| ; CHECK: @test1 |
| ; objectsize should fold to a constant, which causes the branch to fold to an |
| ; uncond branch. Next, we fold the control flow alltogether. |
| ; rdar://8785296 |
| define i32 @test1(i8* %ptr) nounwind ssp noredzone align 2 { |
| entry: |
| %0 = tail call i64 @llvm.objectsize.i64(i8* %ptr, i1 false) |
| %1 = icmp ugt i64 %0, 3 |
| br i1 %1, label %T, label %trap |
| |
| ; CHECK: T: |
| ; CHECK-NOT: br label % |
| |
| trap: ; preds = %0, %entry |
| tail call void @llvm.trap() noreturn nounwind |
| unreachable |
| |
| T: |
| ; CHECK: ret i32 4 |
| ret i32 4 |
| } |
| |
| declare i64 @llvm.objectsize.i64(i8*, i1) nounwind readonly |
| |
| declare void @llvm.trap() nounwind |
