mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 20:23:11 +01:00
23 lines
694 B
LLVM
23 lines
694 B
LLVM
; Test that the backend does not mess up the I/R in case of a use of an undef
|
|
; register. This typically happens while expanding a pseudo or otherwise
|
|
; replacing an instruction for another.
|
|
;
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 -verify-machineinstrs | FileCheck %s
|
|
|
|
; LLCRMux
|
|
define void @f1(i8*) {
|
|
; CHECK-LABEL: f1:
|
|
; CHECK-NOT: *** Bad machine code: Using an undefined physical register ***
|
|
BB:
|
|
%L5 = load i8, i8* %0
|
|
%B9 = lshr i8 %L5, -1
|
|
br label %CF
|
|
|
|
CF: ; preds = %CF, %BB
|
|
%Cmp25 = icmp ne i8 27, %B9
|
|
br i1 %Cmp25, label %CF, label %CF34
|
|
|
|
CF34: ; preds = %CF
|
|
ret void
|
|
}
|