mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-19 02:52:53 +02:00
c22a907f78
ReplaceInstUsesWith needs to return nullptr when the input has no users, because in that case it does not mutate the program. Otherwise, we can get stuck in an infinite loop of repeatedly attempting to constant fold and instruction with no users. llvm-svn: 231755
15 lines
420 B
LLVM
15 lines
420 B
LLVM
; RUN: opt -instcombine < %s
|
|
|
|
; Function Attrs: nounwind readnone ssp
|
|
define void @mulByZero(<4 x i16> %x) #0 {
|
|
entry:
|
|
%a = tail call <4 x i32> @llvm.arm.neon.vmulls.v4i32(<4 x i16> %x, <4 x i16> zeroinitializer) #2
|
|
ret void
|
|
}
|
|
|
|
; Function Attrs: nounwind readnone
|
|
declare <4 x i32> @llvm.arm.neon.vmulls.v4i32(<4 x i16>, <4 x i16>) #1
|
|
|
|
attributes #0 = { nounwind readnone ssp }
|
|
attributes #1 = { nounwind readnone }
|