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