| ; 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*) |