derek.holloway
7502bf64a4
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225 lines
7.3 KiB
LLVM
225 lines
7.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes=instcombine,early-cse -earlycse-debug-hash -S < %s | FileCheck %s
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define ptr @simplifyNullLaunder() {
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; CHECK-LABEL: @simplifyNullLaunder(
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; CHECK-NEXT: ret ptr null
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;
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%b2 = call ptr @llvm.launder.invariant.group.p0(ptr null)
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ret ptr %b2
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}
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define ptr @dontSimplifyNullLaunderNoNullOpt() #0 {
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; CHECK-LABEL: @dontSimplifyNullLaunderNoNullOpt(
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; CHECK-NEXT: [[B2:%.*]] = call ptr @llvm.launder.invariant.group.p0(ptr null)
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; CHECK-NEXT: ret ptr [[B2]]
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;
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%b2 = call ptr @llvm.launder.invariant.group.p0(ptr null)
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ret ptr %b2
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}
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define ptr addrspace(42) @dontsimplifyNullLaunderForDifferentAddrspace() {
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; CHECK-LABEL: @dontsimplifyNullLaunderForDifferentAddrspace(
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; CHECK-NEXT: [[B2:%.*]] = call ptr addrspace(42) @llvm.launder.invariant.group.p42(ptr addrspace(42) null)
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; CHECK-NEXT: ret ptr addrspace(42) [[B2]]
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;
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%b2 = call ptr addrspace(42) @llvm.launder.invariant.group.p42(ptr addrspace(42) null)
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ret ptr addrspace(42) %b2
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}
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define ptr @simplifyUndefLaunder() {
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; CHECK-LABEL: @simplifyUndefLaunder(
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; CHECK-NEXT: ret ptr undef
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;
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%b2 = call ptr @llvm.launder.invariant.group.p0(ptr undef)
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ret ptr %b2
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}
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define ptr addrspace(42) @simplifyUndefLaunder2() {
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; CHECK-LABEL: @simplifyUndefLaunder2(
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; CHECK-NEXT: ret ptr addrspace(42) undef
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;
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%b2 = call ptr addrspace(42) @llvm.launder.invariant.group.p42(ptr addrspace(42) undef)
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ret ptr addrspace(42) %b2
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}
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define ptr @simplifyNullStrip() {
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; CHECK-LABEL: @simplifyNullStrip(
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; CHECK-NEXT: ret ptr null
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;
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%b2 = call ptr @llvm.strip.invariant.group.p0(ptr null)
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ret ptr %b2
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}
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define ptr @dontSimplifyNullStripNonNullOpt() #0 {
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; CHECK-LABEL: @dontSimplifyNullStripNonNullOpt(
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; CHECK-NEXT: [[B2:%.*]] = call ptr @llvm.strip.invariant.group.p0(ptr null)
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; CHECK-NEXT: ret ptr [[B2]]
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;
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%b2 = call ptr @llvm.strip.invariant.group.p0(ptr null)
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ret ptr %b2
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}
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define ptr addrspace(42) @dontsimplifyNullStripForDifferentAddrspace() {
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; CHECK-LABEL: @dontsimplifyNullStripForDifferentAddrspace(
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; CHECK-NEXT: [[B2:%.*]] = call ptr addrspace(42) @llvm.strip.invariant.group.p42(ptr addrspace(42) null)
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; CHECK-NEXT: ret ptr addrspace(42) [[B2]]
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;
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%b2 = call ptr addrspace(42) @llvm.strip.invariant.group.p42(ptr addrspace(42) null)
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ret ptr addrspace(42) %b2
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}
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define ptr @simplifyUndefStrip() {
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; CHECK-LABEL: @simplifyUndefStrip(
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; CHECK-NEXT: ret ptr undef
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;
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%b2 = call ptr @llvm.strip.invariant.group.p0(ptr undef)
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ret ptr %b2
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}
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define ptr addrspace(42) @simplifyUndefStrip2() {
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; CHECK-LABEL: @simplifyUndefStrip2(
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; CHECK-NEXT: ret ptr addrspace(42) undef
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;
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%b2 = call ptr addrspace(42) @llvm.strip.invariant.group.p42(ptr addrspace(42) undef)
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ret ptr addrspace(42) %b2
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}
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define ptr @simplifyLaunderOfLaunder(ptr %a) {
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; CHECK-LABEL: @simplifyLaunderOfLaunder(
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; CHECK-NEXT: [[A3:%.*]] = call ptr @llvm.launder.invariant.group.p0(ptr [[A:%.*]])
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; CHECK-NEXT: ret ptr [[A3]]
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;
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%a2 = call ptr @llvm.launder.invariant.group.p0(ptr %a)
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%a3 = call ptr @llvm.launder.invariant.group.p0(ptr %a2)
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ret ptr %a3
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}
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define ptr @simplifyStripOfLaunder(ptr %a) {
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; CHECK-LABEL: @simplifyStripOfLaunder(
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; CHECK-NEXT: [[A3:%.*]] = call ptr @llvm.strip.invariant.group.p0(ptr [[A:%.*]])
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; CHECK-NEXT: ret ptr [[A3]]
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;
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%a2 = call ptr @llvm.launder.invariant.group.p0(ptr %a)
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%a3 = call ptr @llvm.strip.invariant.group.p0(ptr %a2)
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ret ptr %a3
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}
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define i1 @simplifyForCompare(ptr %a) {
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; CHECK-LABEL: @simplifyForCompare(
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; CHECK-NEXT: [[A3:%.*]] = call ptr @llvm.strip.invariant.group.p0(ptr [[A:%.*]])
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; CHECK-NEXT: ret i1 true
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;
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%a2 = call ptr @llvm.launder.invariant.group.p0(ptr %a)
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%a3 = call ptr @llvm.strip.invariant.group.p0(ptr %a2)
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%b2 = call ptr @llvm.strip.invariant.group.p0(ptr %a)
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%c = icmp eq ptr %a3, %b2
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ret i1 %c
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}
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define ptr @skipWithDifferentTypes(ptr %a) {
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; CHECK-LABEL: @skipWithDifferentTypes(
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; CHECK-NEXT: [[A3:%.*]] = call ptr @llvm.strip.invariant.group.p0(ptr [[A:%.*]])
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; CHECK-NEXT: ret ptr [[A3]]
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;
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%a2 = call ptr @llvm.launder.invariant.group.p0(ptr %a)
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%a3 = call ptr @llvm.strip.invariant.group.p0(ptr %a2)
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ret ptr %a3
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}
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define ptr addrspace(42) @skipWithDifferentTypesAddrspace(ptr addrspace(42) %a) {
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; CHECK-LABEL: @skipWithDifferentTypesAddrspace(
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; CHECK-NEXT: [[A3:%.*]] = call ptr addrspace(42) @llvm.strip.invariant.group.p42(ptr addrspace(42) [[A:%.*]])
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; CHECK-NEXT: ret ptr addrspace(42) [[A3]]
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;
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%a2 = call ptr addrspace(42) @llvm.launder.invariant.group.p42(ptr addrspace(42) %a)
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%a3 = call ptr addrspace(42) @llvm.strip.invariant.group.p42(ptr addrspace(42) %a2)
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ret ptr addrspace(42) %a3
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}
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define ptr addrspace(42) @skipWithDifferentTypesDifferentAddrspace(ptr %a) {
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; CHECK-LABEL: @skipWithDifferentTypesDifferentAddrspace(
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; CHECK-NEXT: [[TMP1:%.*]] = call ptr @llvm.strip.invariant.group.p0(ptr [[A:%.*]])
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; CHECK-NEXT: [[A3:%.*]] = addrspacecast ptr [[TMP1]] to ptr addrspace(42)
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; CHECK-NEXT: ret ptr addrspace(42) [[A3]]
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;
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%cast = addrspacecast ptr %a to ptr addrspace(42)
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%a2 = call ptr addrspace(42) @llvm.launder.invariant.group.p42(ptr addrspace(42) %cast)
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%a3 = call ptr addrspace(42) @llvm.strip.invariant.group.p42(ptr addrspace(42) %a2)
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ret ptr addrspace(42) %a3
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}
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define i1 @icmp_null_launder(ptr %a) {
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; CHECK-LABEL: @icmp_null_launder(
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; CHECK-NEXT: [[R:%.*]] = icmp eq ptr [[A:%.*]], null
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; CHECK-NEXT: ret i1 [[R]]
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;
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%a2 = call ptr @llvm.launder.invariant.group.p0(ptr %a)
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%r = icmp eq ptr %a2, null
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ret i1 %r
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}
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define i1 @icmp_null_strip(ptr %a) {
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; CHECK-LABEL: @icmp_null_strip(
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; CHECK-NEXT: [[R:%.*]] = icmp eq ptr [[A:%.*]], null
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; CHECK-NEXT: ret i1 [[R]]
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;
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%a2 = call ptr @llvm.strip.invariant.group.p0(ptr %a)
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%r = icmp eq ptr %a2, null
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ret i1 %r
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}
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define i1 @icmp_null_launder_valid_null(ptr %a) #0 {
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; CHECK-LABEL: @icmp_null_launder_valid_null(
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; CHECK-NEXT: [[A2:%.*]] = call ptr @llvm.launder.invariant.group.p0(ptr [[A:%.*]])
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; CHECK-NEXT: [[R:%.*]] = icmp eq ptr [[A2]], null
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; CHECK-NEXT: ret i1 [[R]]
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;
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%a2 = call ptr @llvm.launder.invariant.group.p0(ptr %a)
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%r = icmp eq ptr %a2, null
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ret i1 %r
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}
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define i1 @icmp_null_strip_valid_null(ptr %a) #0 {
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; CHECK-LABEL: @icmp_null_strip_valid_null(
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; CHECK-NEXT: [[A2:%.*]] = call ptr @llvm.strip.invariant.group.p0(ptr [[A:%.*]])
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; CHECK-NEXT: [[R:%.*]] = icmp eq ptr [[A2]], null
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; CHECK-NEXT: ret i1 [[R]]
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;
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%a2 = call ptr @llvm.strip.invariant.group.p0(ptr %a)
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%r = icmp eq ptr %a2, null
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ret i1 %r
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}
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; Check that null always becomes the RHS
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define i1 @icmp_null_launder_lhs(ptr %a) {
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; CHECK-LABEL: @icmp_null_launder_lhs(
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; CHECK-NEXT: [[R:%.*]] = icmp eq ptr [[A:%.*]], null
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; CHECK-NEXT: ret i1 [[R]]
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;
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%a2 = call ptr @llvm.launder.invariant.group.p0(ptr %a)
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%r = icmp eq ptr null, %a2
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ret i1 %r
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}
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define i1 @icmp_null_launder_bitcasts(ptr %a) {
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; CHECK-LABEL: @icmp_null_launder_bitcasts(
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; CHECK-NEXT: [[R:%.*]] = icmp eq ptr [[A:%.*]], null
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; CHECK-NEXT: ret i1 [[R]]
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;
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%a3 = call ptr @llvm.launder.invariant.group.p0(ptr %a)
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%r = icmp eq ptr %a3, null
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ret i1 %r
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}
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declare ptr @llvm.launder.invariant.group.p0(ptr)
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declare ptr addrspace(42) @llvm.launder.invariant.group.p42(ptr addrspace(42))
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declare ptr @llvm.strip.invariant.group.p0(ptr)
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declare ptr addrspace(42) @llvm.strip.invariant.group.p42(ptr addrspace(42))
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attributes #0 = { null_pointer_is_valid }
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