57 lines
2 KiB
LLVM
57 lines
2 KiB
LLVM
; RUN: opt -S -passes=inline < %s | FileCheck %s
|
|
; RUN: opt -S -O3 < %s | FileCheck %s
|
|
; RUN: opt -S -passes=inline -inline-threshold=1 < %s | FileCheck %s
|
|
|
|
%struct.A = type <{ ptr, i32, [4 x i8] }>
|
|
|
|
; This test checks if value returned from the launder is considered aliasing
|
|
; with its argument. Due to bug caused by handling launder in capture tracking
|
|
; sometimes it would be considered noalias.
|
|
; CHECK-LABEL: define {{(noundef )?}}i32 @bar(ptr noalias
|
|
define i32 @bar(ptr noalias) {
|
|
; CHECK-NOT: noalias
|
|
%2 = call ptr @llvm.launder.invariant.group.p0(ptr %0)
|
|
%3 = getelementptr inbounds i8, ptr %2, i64 8
|
|
store i32 42, ptr %3, align 8
|
|
%4 = getelementptr inbounds %struct.A, ptr %0, i64 0, i32 1
|
|
%5 = load i32, ptr %4, align 8
|
|
ret i32 %5
|
|
}
|
|
|
|
; CHECK-LABEL: define {{(noundef )?}}i32 @foo(ptr noalias
|
|
define i32 @foo(ptr noalias) {
|
|
; CHECK-NOT: call i32 @bar(
|
|
; CHECK-NOT: !noalias
|
|
%2 = tail call i32 @bar(ptr %0)
|
|
ret i32 %2
|
|
}
|
|
|
|
|
|
; This test checks if invariant group intrinsics have zero cost for inlining.
|
|
; CHECK-LABEL: define ptr @caller(ptr
|
|
define ptr @caller(ptr %p) {
|
|
; CHECK-NOT: call ptr @lot_of_launders_and_strips
|
|
%a1 = call ptr @lot_of_launders_and_strips(ptr %p)
|
|
%a2 = call ptr @lot_of_launders_and_strips(ptr %a1)
|
|
%a3 = call ptr @lot_of_launders_and_strips(ptr %a2)
|
|
%a4 = call ptr @lot_of_launders_and_strips(ptr %a3)
|
|
ret ptr %a4
|
|
}
|
|
|
|
define ptr @lot_of_launders_and_strips(ptr %p) {
|
|
%a1 = call ptr @llvm.launder.invariant.group.p0(ptr %p)
|
|
%a2 = call ptr @llvm.launder.invariant.group.p0(ptr %a1)
|
|
%a3 = call ptr @llvm.launder.invariant.group.p0(ptr %a2)
|
|
%a4 = call ptr @llvm.launder.invariant.group.p0(ptr %a3)
|
|
|
|
%s1 = call ptr @llvm.strip.invariant.group.p0(ptr %a4)
|
|
%s2 = call ptr @llvm.strip.invariant.group.p0(ptr %s1)
|
|
%s3 = call ptr @llvm.strip.invariant.group.p0(ptr %s2)
|
|
%s4 = call ptr @llvm.strip.invariant.group.p0(ptr %s3)
|
|
|
|
ret ptr %s4
|
|
}
|
|
|
|
|
|
declare ptr @llvm.launder.invariant.group.p0(ptr)
|
|
declare ptr @llvm.strip.invariant.group.p0(ptr)
|