1 ; RUN: opt -instcombine -S < %s | FileCheck %s
4 ; CHECK-LABEL: define i8* @simplifyNullLaunder()
5 define i8* @simplifyNullLaunder() {
6 ; CHECK-NEXT: ret i8* null
7 %b2 = call i8* @llvm.launder.invariant.group.p0i8(i8* null)
11 ; CHECK-LABEL: define i8 addrspace(42)* @dontsimplifyNullLaunderForDifferentAddrspace()
12 define i8 addrspace(42)* @dontsimplifyNullLaunderForDifferentAddrspace() {
13 ; CHECK: %b2 = call i8 addrspace(42)* @llvm.launder.invariant.group.p42i8(i8 addrspace(42)* null)
14 ; CHECK: ret i8 addrspace(42)* %b2
15 %b2 = call i8 addrspace(42)* @llvm.launder.invariant.group.p42i8(i8 addrspace(42)* null)
16 ret i8 addrspace(42)* %b2
19 ; CHECK-LABEL: define i8* @simplifyUndefLaunder()
20 define i8* @simplifyUndefLaunder() {
21 ; CHECK-NEXT: ret i8* undef
22 %b2 = call i8* @llvm.launder.invariant.group.p0i8(i8* undef)
26 ; CHECK-LABEL: define i8 addrspace(42)* @simplifyUndefLaunder2()
27 define i8 addrspace(42)* @simplifyUndefLaunder2() {
28 ; CHECK-NEXT: ret i8 addrspace(42)* undef
29 %b2 = call i8 addrspace(42)* @llvm.launder.invariant.group.p42i8(i8 addrspace(42)* undef)
30 ret i8 addrspace(42)* %b2
33 declare i8* @llvm.launder.invariant.group.p0i8(i8*)
34 declare i8 addrspace(42)* @llvm.launder.invariant.group.p42i8(i8 addrspace(42)*)
37 ; CHECK-LABEL: define i8* @simplifyNullStrip()
38 define i8* @simplifyNullStrip() {
39 ; CHECK-NEXT: ret i8* null
40 %b2 = call i8* @llvm.strip.invariant.group.p0i8(i8* null)
44 ; CHECK-LABEL: define i8 addrspace(42)* @dontsimplifyNullStripForDifferentAddrspace()
45 define i8 addrspace(42)* @dontsimplifyNullStripForDifferentAddrspace() {
46 ; CHECK: %b2 = call i8 addrspace(42)* @llvm.strip.invariant.group.p42i8(i8 addrspace(42)* null)
47 ; CHECK: ret i8 addrspace(42)* %b2
48 %b2 = call i8 addrspace(42)* @llvm.strip.invariant.group.p42i8(i8 addrspace(42)* null)
49 ret i8 addrspace(42)* %b2
52 ; CHECK-LABEL: define i8* @simplifyUndefStrip()
53 define i8* @simplifyUndefStrip() {
54 ; CHECK-NEXT: ret i8* undef
55 %b2 = call i8* @llvm.strip.invariant.group.p0i8(i8* undef)
59 ; CHECK-LABEL: define i8 addrspace(42)* @simplifyUndefStrip2()
60 define i8 addrspace(42)* @simplifyUndefStrip2() {
61 ; CHECK-NEXT: ret i8 addrspace(42)* undef
62 %b2 = call i8 addrspace(42)* @llvm.strip.invariant.group.p42i8(i8 addrspace(42)* undef)
63 ret i8 addrspace(42)* %b2
66 declare i8* @llvm.strip.invariant.group.p0i8(i8*)
67 declare i8 addrspace(42)* @llvm.strip.invariant.group.p42i8(i8 addrspace(42)*)