35 lines
998 B
LLVM
35 lines
998 B
LLVM
; RUN: opt -S -instsimplify -instcombine < %s | FileCheck %s
|
|
|
|
; CHECK-LABEL: define void @checkNonnullLaunder()
|
|
define void @checkNonnullLaunder() {
|
|
; CHECK: %[[p:.*]] = call i8* @llvm.launder.invariant.group.p0i8(i8* nonnull %0)
|
|
; CHECK: call void @use(i8* nonnull %[[p]])
|
|
entry:
|
|
%0 = alloca i8, align 8
|
|
|
|
%p = call i8* @llvm.launder.invariant.group.p0i8(i8* %0)
|
|
%p2 = call i8* @llvm.launder.invariant.group.p0i8(i8* %p)
|
|
call void @use(i8* %p2)
|
|
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: define void @checkNonnullStrip()
|
|
define void @checkNonnullStrip() {
|
|
; CHECK: %[[p:.*]] = call i8* @llvm.strip.invariant.group.p0i8(i8* nonnull %0)
|
|
; CHECK: call void @use(i8* nonnull %[[p]])
|
|
entry:
|
|
%0 = alloca i8, align 8
|
|
|
|
%p = call i8* @llvm.strip.invariant.group.p0i8(i8* %0)
|
|
%p2 = call i8* @llvm.strip.invariant.group.p0i8(i8* %p)
|
|
call void @use(i8* %p2)
|
|
|
|
ret void
|
|
}
|
|
|
|
declare i8* @llvm.launder.invariant.group.p0i8(i8*)
|
|
declare i8* @llvm.strip.invariant.group.p0i8(i8*)
|
|
|
|
declare void @use(i8*)
|