mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-23 19:23:23 +01:00
a62270de2c
The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
33 lines
729 B
LLVM
33 lines
729 B
LLVM
; RUN: opt < %s -lcssa -licm -S | FileCheck %s
|
|
; PR30454
|
|
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
|
target triple = "x86_64-unknown-linux-gnu"
|
|
|
|
declare i8 @bar()
|
|
|
|
; Test that we preserve LCSSA form when removing edges from unreachable blocks.
|
|
; CHECK-LABEL: @foo
|
|
define void @foo() {
|
|
entry:
|
|
br label %for.cond
|
|
|
|
for.cond:
|
|
%x = phi i8 [ undef, %entry ], [ %y, %for.latch ]
|
|
br i1 undef, label %for.latch, label %exit
|
|
|
|
; CHECK: unreachable.bb:
|
|
; CHECK-NEXT: unreachable
|
|
unreachable.bb:
|
|
br i1 undef, label %exit, label %for.latch
|
|
|
|
for.latch:
|
|
%y = call i8 @bar()
|
|
br label %for.cond
|
|
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: %x.lcssa = phi i8 [ %x, %for.cond ]
|
|
exit:
|
|
%z = zext i8 %x to i32
|
|
ret void
|
|
}
|