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| ; RUN: opt -S -inline < %s | FileCheck %s
; RUN: opt -S -O3 < %s | FileCheck %s
; RUN: opt -S -inline -inline-threshold=1 < %s | FileCheck %s
%struct.A = type <{ i32 (...)**, 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 i32 @bar(%struct.A* noalias
define i32 @bar(%struct.A* noalias) {
; CHECK-NOT: noalias
%2 = bitcast %struct.A* %0 to i8*
%3 = call i8* @llvm.launder.invariant.group.p0i8(i8* %2)
%4 = getelementptr inbounds i8, i8* %3, i64 8
%5 = bitcast i8* %4 to i32*
store i32 42, i32* %5, align 8
%6 = getelementptr inbounds %struct.A, %struct.A* %0, i64 0, i32 1
%7 = load i32, i32* %6, align 8
ret i32 %7
}
; CHECK-LABEL: define i32 @foo(%struct.A* noalias
define i32 @foo(%struct.A* noalias) {
; CHECK-NOT: call i32 @bar(
; CHECK-NOT: noalias
%2 = tail call i32 @bar(%struct.A* %0)
ret i32 %2
}
; This test checks if invariant group intrinsics have zero cost for inlining.
; CHECK-LABEL: define i8* @caller(i8*
define i8* @caller(i8* %p) {
; CHECK-NOT: call i8* @lot_of_launders_and_strips
%a1 = call i8* @lot_of_launders_and_strips(i8* %p)
%a2 = call i8* @lot_of_launders_and_strips(i8* %a1)
%a3 = call i8* @lot_of_launders_and_strips(i8* %a2)
%a4 = call i8* @lot_of_launders_and_strips(i8* %a3)
ret i8* %a4
}
define i8* @lot_of_launders_and_strips(i8* %p) {
%a1 = call i8* @llvm.launder.invariant.group.p0i8(i8* %p)
%a2 = call i8* @llvm.launder.invariant.group.p0i8(i8* %a1)
%a3 = call i8* @llvm.launder.invariant.group.p0i8(i8* %a2)
%a4 = call i8* @llvm.launder.invariant.group.p0i8(i8* %a3)
%s1 = call i8* @llvm.strip.invariant.group.p0i8(i8* %a4)
%s2 = call i8* @llvm.strip.invariant.group.p0i8(i8* %s1)
%s3 = call i8* @llvm.strip.invariant.group.p0i8(i8* %s2)
%s4 = call i8* @llvm.strip.invariant.group.p0i8(i8* %s3)
ret i8* %s4
}
declare i8* @llvm.launder.invariant.group.p0i8(i8*)
declare i8* @llvm.strip.invariant.group.p0i8(i8*)
|