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; 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 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 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)
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