66 lines
2.0 KiB
LLVM
66 lines
2.0 KiB
LLVM
; RUN: opt < %s -basic-aa -dse -S | FileCheck %s
|
|
|
|
; CHECK-LABEL: void @skipBarrier(i8* %ptr)
|
|
define void @skipBarrier(i8* %ptr) {
|
|
; CHECK-NOT: store i8 42
|
|
store i8 42, i8* %ptr
|
|
; CHECK: %ptr2 = call i8* @llvm.launder.invariant.group.p0i8(i8* %ptr)
|
|
%ptr2 = call i8* @llvm.launder.invariant.group.p0i8(i8* %ptr)
|
|
; CHECK: store i8 43
|
|
store i8 43, i8* %ptr2
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: void @skip2Barriers(i8* %ptr)
|
|
define void @skip2Barriers(i8* %ptr) {
|
|
; CHECK-NOT: store i8 42
|
|
store i8 42, i8* %ptr
|
|
; CHECK: %ptr2 = call i8* @llvm.launder.invariant.group.p0i8(i8* %ptr)
|
|
%ptr2 = call i8* @llvm.launder.invariant.group.p0i8(i8* %ptr)
|
|
; CHECK-NOT: store i8 43
|
|
store i8 43, i8* %ptr2
|
|
%ptr3 = call i8* @llvm.launder.invariant.group.p0i8(i8* %ptr2)
|
|
%ptr4 = call i8* @llvm.launder.invariant.group.p0i8(i8* %ptr3)
|
|
|
|
; CHECK: store i8 44
|
|
store i8 44, i8* %ptr4
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: void @skip3Barriers(i8* %ptr)
|
|
define void @skip3Barriers(i8* %ptr) {
|
|
; CHECK-NOT: store i8 42
|
|
store i8 42, i8* %ptr
|
|
; CHECK: %ptr2 = call i8* @llvm.strip.invariant.group.p0i8(i8* %ptr)
|
|
%ptr2 = call i8* @llvm.strip.invariant.group.p0i8(i8* %ptr)
|
|
; CHECK-NOT: store i8 43
|
|
store i8 43, i8* %ptr2
|
|
%ptr3 = call i8* @llvm.strip.invariant.group.p0i8(i8* %ptr2)
|
|
%ptr4 = call i8* @llvm.strip.invariant.group.p0i8(i8* %ptr3)
|
|
|
|
; CHECK: store i8 44
|
|
store i8 44, i8* %ptr4
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: void @skip4Barriers(i8* %ptr)
|
|
define void @skip4Barriers(i8* %ptr) {
|
|
; CHECK-NOT: store i8 42
|
|
store i8 42, i8* %ptr
|
|
; CHECK: %ptr2 = call i8* @llvm.strip.invariant.group.p0i8(i8* %ptr)
|
|
%ptr2 = call i8* @llvm.strip.invariant.group.p0i8(i8* %ptr)
|
|
; CHECK-NOT: store i8 43
|
|
store i8 43, i8* %ptr2
|
|
%ptr3 = call i8* @llvm.launder.invariant.group.p0i8(i8* %ptr2)
|
|
%ptr4 = call i8* @llvm.strip.invariant.group.p0i8(i8* %ptr3)
|
|
%ptr5 = call i8* @llvm.launder.invariant.group.p0i8(i8* %ptr3)
|
|
|
|
; CHECK: store i8 44
|
|
store i8 44, i8* %ptr5
|
|
ret void
|
|
}
|
|
|
|
|
|
declare i8* @llvm.launder.invariant.group.p0i8(i8*)
|
|
declare i8* @llvm.strip.invariant.group.p0i8(i8*)
|