mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-20 09:30:43 +00:00
47 lines
1.3 KiB
LLVM
47 lines
1.3 KiB
LLVM
|
; RUN: opt < %s -gvn -enable-full-load-pre -S | FileCheck %s
|
||
|
|
|
||
|
|
define i8* @cat(i8* %s1, ...) nounwind {
|
||
|
|
entry:
|
||
|
|
br i1 undef, label %bb, label %bb3
|
||
|
|
|
||
|
|
bb: ; preds = %entry
|
||
|
|
unreachable
|
||
|
|
|
||
|
|
bb3: ; preds = %entry
|
||
|
|
store i8* undef, i8** undef, align 4
|
||
|
|
br i1 undef, label %bb5, label %bb6
|
||
|
|
|
||
|
|
bb5: ; preds = %bb3
|
||
|
|
unreachable
|
||
|
|
|
||
|
|
bb6: ; preds = %bb3
|
||
|
|
br label %bb12
|
||
|
|
|
||
|
|
bb8: ; preds = %bb12
|
||
|
|
br i1 undef, label %bb9, label %bb10
|
||
|
|
|
||
|
|
bb9: ; preds = %bb8
|
||
|
|
%0 = load i8** undef, align 4 ; <i8*> [#uses=0]
|
||
|
|
%1 = load i8** undef, align 4 ; <i8*> [#uses=0]
|
||
|
|
br label %bb11
|
||
|
|
|
||
|
|
bb10: ; preds = %bb8
|
||
|
|
br label %bb11
|
||
|
|
|
||
|
|
bb11: ; preds = %bb10, %bb9
|
||
|
|
; CHECK: bb11:
|
||
|
|
; CHECK: phi
|
||
|
|
; CHECK-NOT: phi
|
||
|
|
br label %bb12
|
||
|
|
|
||
|
|
bb12: ; preds = %bb11, %bb6
|
||
|
|
; CHECK: bb12:
|
||
|
|
; CHECK: phi
|
||
|
|
; CHECK-NOT: phi
|
||
|
|
br i1 undef, label %bb8, label %bb13
|
||
|
|
|
||
|
|
bb13: ; preds = %bb12
|
||
|
|
; CHECK: bb13:
|
||
|
|
ret i8* undef
|
||
|
|
}
|