; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --check-attributes ; RUN: opt -attributor -enable-new-pm=0 -attributor-manifest-internal -attributor-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=17 -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_CGSCC_NPM,NOT_CGSCC_OPM,NOT_TUNIT_NPM,IS__TUNIT____,IS________OPM,IS__TUNIT_OPM ; RUN: opt -aa-pipeline=basic-aa -passes=attributor -attributor-manifest-internal -attributor-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=17 -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_CGSCC_OPM,NOT_CGSCC_NPM,NOT_TUNIT_OPM,IS__TUNIT____,IS________NPM,IS__TUNIT_NPM ; RUN: opt -attributor-cgscc -enable-new-pm=0 -attributor-manifest-internal -attributor-annotate-decl-cs -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_TUNIT_NPM,NOT_TUNIT_OPM,NOT_CGSCC_NPM,IS__CGSCC____,IS________OPM,IS__CGSCC_OPM ; RUN: opt -aa-pipeline=basic-aa -passes=attributor-cgscc -attributor-manifest-internal -attributor-annotate-decl-cs -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_TUNIT_NPM,NOT_TUNIT_OPM,NOT_CGSCC_OPM,IS__CGSCC____,IS________NPM,IS__CGSCC_NPM target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" declare void @f(i32) declare token @llvm.call.preallocated.setup(i32) declare i8* @llvm.call.preallocated.arg(token, i32) ; Test1: Replace argument with constant define internal void @test1(i32 %a) { ; CHECK-LABEL: define {{[^@]+}}@test1() { ; CHECK-NEXT: tail call void @f(i32 noundef 1) ; CHECK-NEXT: ret void ; tail call void @f(i32 %a) ret void } define void @test1_helper() { ; CHECK-LABEL: define {{[^@]+}}@test1_helper() { ; CHECK-NEXT: tail call void @test1() ; CHECK-NEXT: ret void ; tail call void @test1(i32 1) ret void } ; TEST 2 : Simplify return value define i32 @return0() { ; IS__TUNIT____: Function Attrs: nofree nosync nounwind readnone willreturn ; IS__TUNIT____-LABEL: define {{[^@]+}}@return0 ; IS__TUNIT____-SAME: () [[ATTR1:#.*]] { ; IS__TUNIT____-NEXT: ret i32 0 ; ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC____-LABEL: define {{[^@]+}}@return0 ; IS__CGSCC____-SAME: () [[ATTR1:#.*]] { ; IS__CGSCC____-NEXT: ret i32 0 ; ret i32 0 } define i32 @return1() { ; IS__TUNIT____: Function Attrs: nofree nosync nounwind readnone willreturn ; IS__TUNIT____-LABEL: define {{[^@]+}}@return1 ; IS__TUNIT____-SAME: () [[ATTR1]] { ; IS__TUNIT____-NEXT: ret i32 1 ; ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC____-LABEL: define {{[^@]+}}@return1 ; IS__CGSCC____-SAME: () [[ATTR1]] { ; IS__CGSCC____-NEXT: ret i32 1 ; ret i32 1 } define i32 @test2_1(i1 %c) { ; IS__TUNIT____: Function Attrs: nofree nosync nounwind readnone willreturn ; IS__TUNIT____-LABEL: define {{[^@]+}}@test2_1 ; IS__TUNIT____-SAME: (i1 [[C:%.*]]) [[ATTR1]] { ; IS__TUNIT____-NEXT: br i1 [[C]], label [[IF_TRUE:%.*]], label [[IF_FALSE:%.*]] ; IS__TUNIT____: if.true: ; IS__TUNIT____-NEXT: [[RET0:%.*]] = add i32 0, 1 ; IS__TUNIT____-NEXT: br label [[END:%.*]] ; IS__TUNIT____: if.false: ; IS__TUNIT____-NEXT: br label [[END]] ; IS__TUNIT____: end: ; IS__TUNIT____-NEXT: [[RET:%.*]] = phi i32 [ [[RET0]], [[IF_TRUE]] ], [ 1, [[IF_FALSE]] ] ; IS__TUNIT____-NEXT: ret i32 1 ; ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC____-LABEL: define {{[^@]+}}@test2_1 ; IS__CGSCC____-SAME: (i1 [[C:%.*]]) [[ATTR1]] { ; IS__CGSCC____-NEXT: br i1 [[C]], label [[IF_TRUE:%.*]], label [[IF_FALSE:%.*]] ; IS__CGSCC____: if.true: ; IS__CGSCC____-NEXT: [[RET0:%.*]] = add i32 0, 1 ; IS__CGSCC____-NEXT: br label [[END:%.*]] ; IS__CGSCC____: if.false: ; IS__CGSCC____-NEXT: br label [[END]] ; IS__CGSCC____: end: ; IS__CGSCC____-NEXT: [[RET:%.*]] = phi i32 [ [[RET0]], [[IF_TRUE]] ], [ 1, [[IF_FALSE]] ] ; IS__CGSCC____-NEXT: ret i32 1 ; br i1 %c, label %if.true, label %if.false if.true: %call = tail call i32 @return0() %ret0 = add i32 %call, 1 br label %end if.false: %ret1 = tail call i32 @return1() br label %end end: %ret = phi i32 [ %ret0, %if.true ], [ %ret1, %if.false ] ret i32 1 } define i32 @test2_2(i1 %c) { ; IS__TUNIT____: Function Attrs: nofree nosync nounwind readnone willreturn ; IS__TUNIT____-LABEL: define {{[^@]+}}@test2_2 ; IS__TUNIT____-SAME: (i1 [[C:%.*]]) [[ATTR1]] { ; IS__TUNIT____-NEXT: ret i32 1 ; ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC____-LABEL: define {{[^@]+}}@test2_2 ; IS__CGSCC____-SAME: (i1 [[C:%.*]]) [[ATTR1]] { ; IS__CGSCC____-NEXT: ret i32 1 ; %ret = tail call i32 @test2_1(i1 %c) ret i32 %ret } declare void @use(i32) define void @test3(i1 %c) { ; CHECK-LABEL: define {{[^@]+}}@test3 ; CHECK-SAME: (i1 [[C:%.*]]) { ; CHECK-NEXT: br i1 [[C]], label [[IF_TRUE:%.*]], label [[IF_FALSE:%.*]] ; CHECK: if.true: ; CHECK-NEXT: br label [[END:%.*]] ; CHECK: if.false: ; CHECK-NEXT: br label [[END]] ; CHECK: end: ; CHECK-NEXT: [[R:%.*]] = phi i32 [ 1, [[IF_TRUE]] ], [ 1, [[IF_FALSE]] ] ; CHECK-NEXT: tail call void @use(i32 noundef 1) ; CHECK-NEXT: ret void ; br i1 %c, label %if.true, label %if.false if.true: br label %end if.false: %ret1 = tail call i32 @return1() br label %end end: %r = phi i32 [ 1, %if.true ], [ %ret1, %if.false ] tail call void @use(i32 %r) ret void } define void @test-select-phi(i1 %c) { ; CHECK-LABEL: define {{[^@]+}}@test-select-phi ; CHECK-SAME: (i1 [[C:%.*]]) { ; CHECK-NEXT: tail call void @use(i32 noundef 1) ; CHECK-NEXT: [[SELECT_NOT_SAME:%.*]] = select i1 [[C]], i32 1, i32 0 ; CHECK-NEXT: tail call void @use(i32 noundef [[SELECT_NOT_SAME]]) ; CHECK-NEXT: br i1 [[C]], label [[IF_TRUE:%.*]], label [[IF_FALSE:%.*]] ; CHECK: if-true: ; CHECK-NEXT: br label [[END:%.*]] ; CHECK: if-false: ; CHECK-NEXT: br label [[END]] ; CHECK: end: ; CHECK-NEXT: [[PHI_SAME:%.*]] = phi i32 [ 1, [[IF_TRUE]] ], [ 1, [[IF_FALSE]] ] ; CHECK-NEXT: [[PHI_NOT_SAME:%.*]] = phi i32 [ 0, [[IF_TRUE]] ], [ 1, [[IF_FALSE]] ] ; CHECK-NEXT: [[PHI_SAME_PROP:%.*]] = phi i32 [ 1, [[IF_TRUE]] ], [ 1, [[IF_FALSE]] ] ; CHECK-NEXT: [[PHI_SAME_UNDEF:%.*]] = phi i32 [ 1, [[IF_TRUE]] ], [ undef, [[IF_FALSE]] ] ; CHECK-NEXT: [[SELECT_NOT_SAME_UNDEF:%.*]] = select i1 [[C]], i32 [[PHI_NOT_SAME]], i32 undef ; CHECK-NEXT: tail call void @use(i32 noundef 1) ; CHECK-NEXT: tail call void @use(i32 noundef [[PHI_NOT_SAME]]) ; CHECK-NEXT: tail call void @use(i32 noundef 1) ; CHECK-NEXT: tail call void @use(i32 1) ; CHECK-NEXT: tail call void @use(i32 [[SELECT_NOT_SAME_UNDEF]]) ; CHECK-NEXT: ret void ; %select-same = select i1 %c, i32 1, i32 1 tail call void @use(i32 %select-same) %select-not-same = select i1 %c, i32 1, i32 0 tail call void @use(i32 %select-not-same) br i1 %c, label %if-true, label %if-false if-true: br label %end if-false: br label %end end: %phi-same = phi i32 [ 1, %if-true ], [ 1, %if-false ] %phi-not-same = phi i32 [ 0, %if-true ], [ 1, %if-false ] %phi-same-prop = phi i32 [ 1, %if-true ], [ %select-same, %if-false ] %phi-same-undef = phi i32 [ 1, %if-true ], [ undef, %if-false ] %select-not-same-undef = select i1 %c, i32 %phi-not-same, i32 undef tail call void @use(i32 %phi-same) tail call void @use(i32 %phi-not-same) tail call void @use(i32 %phi-same-prop) tail call void @use(i32 %phi-same-undef) tail call void @use(i32 %select-not-same-undef) ret void } define i32 @ipccp1(i32 %a) { ; IS__TUNIT____: Function Attrs: nofree nosync nounwind readnone willreturn ; IS__TUNIT____-LABEL: define {{[^@]+}}@ipccp1 ; IS__TUNIT____-SAME: (i32 returned [[A:%.*]]) [[ATTR1]] { ; IS__TUNIT____-NEXT: br i1 true, label [[T:%.*]], label [[F:%.*]] ; IS__TUNIT____: t: ; IS__TUNIT____-NEXT: ret i32 [[A]] ; IS__TUNIT____: f: ; IS__TUNIT____-NEXT: unreachable ; ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC____-LABEL: define {{[^@]+}}@ipccp1 ; IS__CGSCC____-SAME: (i32 returned [[A:%.*]]) [[ATTR1]] { ; IS__CGSCC____-NEXT: br i1 true, label [[T:%.*]], label [[F:%.*]] ; IS__CGSCC____: t: ; IS__CGSCC____-NEXT: ret i32 [[A]] ; IS__CGSCC____: f: ; IS__CGSCC____-NEXT: unreachable ; br i1 true, label %t, label %f t: ret i32 %a f: %r = call i32 @ipccp1(i32 5) ret i32 %r } define internal i1 @ipccp2i(i1 %a) { ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC____-LABEL: define {{[^@]+}}@ipccp2i ; IS__CGSCC____-SAME: () [[ATTR1]] { ; IS__CGSCC____-NEXT: br label [[T:%.*]] ; IS__CGSCC____: t: ; IS__CGSCC____-NEXT: ret i1 undef ; IS__CGSCC____: f: ; IS__CGSCC____-NEXT: unreachable ; br i1 %a, label %t, label %f t: ret i1 %a f: %r = call i1 @ipccp2i(i1 false) ret i1 %r } define i1 @ipccp2() { ; IS__TUNIT____: Function Attrs: nofree nosync nounwind readnone willreturn ; IS__TUNIT____-LABEL: define {{[^@]+}}@ipccp2 ; IS__TUNIT____-SAME: () [[ATTR1]] { ; IS__TUNIT____-NEXT: ret i1 true ; ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC____-LABEL: define {{[^@]+}}@ipccp2 ; IS__CGSCC____-SAME: () [[ATTR1]] { ; IS__CGSCC____-NEXT: ret i1 true ; %r = call i1 @ipccp2i(i1 true) ret i1 %r } define internal i1 @ipccp2ib(i1 %a) { ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC____-LABEL: define {{[^@]+}}@ipccp2ib ; IS__CGSCC____-SAME: () [[ATTR1]] { ; IS__CGSCC____-NEXT: br label [[T:%.*]] ; IS__CGSCC____: t: ; IS__CGSCC____-NEXT: ret i1 undef ; IS__CGSCC____: f: ; IS__CGSCC____-NEXT: unreachable ; br i1 %a, label %t, label %f t: ret i1 true f: %r = call i1 @ipccp2ib(i1 false) ret i1 %r } define i1 @ipccp2b() { ; IS__TUNIT____: Function Attrs: nofree nosync nounwind readnone willreturn ; IS__TUNIT____-LABEL: define {{[^@]+}}@ipccp2b ; IS__TUNIT____-SAME: () [[ATTR1]] { ; IS__TUNIT____-NEXT: ret i1 true ; ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC____-LABEL: define {{[^@]+}}@ipccp2b ; IS__CGSCC____-SAME: () [[ATTR1]] { ; IS__CGSCC____-NEXT: ret i1 true ; %r = call i1 @ipccp2ib(i1 true) ret i1 %r } define internal i32 @ipccp3i(i32 %a) { ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC____-LABEL: define {{[^@]+}}@ipccp3i ; IS__CGSCC____-SAME: () [[ATTR1]] { ; IS__CGSCC____-NEXT: br label [[T:%.*]] ; IS__CGSCC____: t: ; IS__CGSCC____-NEXT: ret i32 undef ; IS__CGSCC____: f: ; IS__CGSCC____-NEXT: unreachable ; %c = icmp eq i32 %a, 7 br i1 %c, label %t, label %f t: ret i32 %a f: %r = call i32 @ipccp3i(i32 5) ret i32 %r } define i32 @ipccp3() { ; IS__TUNIT____: Function Attrs: nofree nosync nounwind readnone willreturn ; IS__TUNIT____-LABEL: define {{[^@]+}}@ipccp3 ; IS__TUNIT____-SAME: () [[ATTR1]] { ; IS__TUNIT____-NEXT: ret i32 7 ; ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC____-LABEL: define {{[^@]+}}@ipccp3 ; IS__CGSCC____-SAME: () [[ATTR1]] { ; IS__CGSCC____-NEXT: ret i32 7 ; %r = call i32 @ipccp3i(i32 7) ret i32 %r } ; Do not touch complicated arguments (for now) %struct.X = type { i8* } define internal i32* @test_inalloca(i32* inalloca %a) { ; IS__TUNIT____: Function Attrs: nofree nosync nounwind readnone willreturn ; IS__TUNIT____-LABEL: define {{[^@]+}}@test_inalloca ; IS__TUNIT____-SAME: (i32* inalloca noalias nofree nonnull returned writeonly dereferenceable(4) "no-capture-maybe-returned" [[A:%.*]]) [[ATTR1]] { ; IS__TUNIT____-NEXT: ret i32* [[A]] ; ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC____-LABEL: define {{[^@]+}}@test_inalloca ; IS__CGSCC____-SAME: (i32* inalloca noalias nofree nonnull returned writeonly dereferenceable(4) "no-capture-maybe-returned" [[A:%.*]]) [[ATTR1]] { ; IS__CGSCC____-NEXT: ret i32* [[A]] ; ret i32* %a } define i32* @complicated_args_inalloca(i32* %arg) { ; IS__TUNIT____: Function Attrs: nofree nosync nounwind readnone willreturn ; IS__TUNIT____-LABEL: define {{[^@]+}}@complicated_args_inalloca ; IS__TUNIT____-SAME: (i32* nofree readnone returned "no-capture-maybe-returned" [[ARG:%.*]]) [[ATTR1]] { ; IS__TUNIT____-NEXT: [[CALL:%.*]] = call i32* @test_inalloca(i32* noalias nofree writeonly "no-capture-maybe-returned" [[ARG]]) [[ATTR1]] ; IS__TUNIT____-NEXT: ret i32* [[CALL]] ; ; IS__CGSCC_OPM: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@complicated_args_inalloca ; IS__CGSCC_OPM-SAME: (i32* nofree nonnull readnone returned dereferenceable(4) "no-capture-maybe-returned" [[ARG:%.*]]) [[ATTR1:#.*]] { ; IS__CGSCC_OPM-NEXT: [[CALL:%.*]] = call i32* @test_inalloca(i32* noalias nofree nonnull writeonly dereferenceable(4) "no-capture-maybe-returned" [[ARG]]) [[ATTR5:#.*]] ; IS__CGSCC_OPM-NEXT: ret i32* [[CALL]] ; ; IS__CGSCC_NPM: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC_NPM-LABEL: define {{[^@]+}}@complicated_args_inalloca ; IS__CGSCC_NPM-SAME: (i32* nofree nonnull readnone returned dereferenceable(4) "no-capture-maybe-returned" [[ARG:%.*]]) [[ATTR1:#.*]] { ; IS__CGSCC_NPM-NEXT: [[CALL:%.*]] = call i32* @test_inalloca(i32* noalias nofree nonnull writeonly dereferenceable(4) "no-capture-maybe-returned" [[ARG]]) [[ATTR4:#.*]] ; IS__CGSCC_NPM-NEXT: ret i32* [[CALL]] ; %call = call i32* @test_inalloca(i32* %arg) ret i32* %call } define internal i32* @test_preallocated(i32* preallocated(i32) %a) { ; IS__TUNIT____: Function Attrs: nofree nosync nounwind readnone willreturn ; IS__TUNIT____-LABEL: define {{[^@]+}}@test_preallocated ; IS__TUNIT____-SAME: (i32* noalias nofree noundef nonnull returned writeonly preallocated(i32) align 536870912 dereferenceable(4) "no-capture-maybe-returned" [[A:%.*]]) [[ATTR1]] { ; IS__TUNIT____-NEXT: ret i32* [[A]] ; ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC____-LABEL: define {{[^@]+}}@test_preallocated ; IS__CGSCC____-SAME: (i32* noalias nofree noundef nonnull returned writeonly preallocated(i32) align 536870912 dereferenceable(4) "no-capture-maybe-returned" [[A:%.*]]) [[ATTR1]] { ; IS__CGSCC____-NEXT: ret i32* [[A]] ; ret i32* %a } define i32* @complicated_args_preallocated() { ; IS__TUNIT_OPM: Function Attrs: nofree nosync nounwind willreturn ; IS__TUNIT_OPM-LABEL: define {{[^@]+}}@complicated_args_preallocated ; IS__TUNIT_OPM-SAME: () [[ATTR0:#.*]] { ; IS__TUNIT_OPM-NEXT: [[C:%.*]] = call token @llvm.call.preallocated.setup(i32 noundef 1) [[ATTR5:#.*]] ; IS__TUNIT_OPM-NEXT: [[CALL:%.*]] = call i32* @test_preallocated(i32* noalias nocapture nofree noundef writeonly preallocated(i32) align 536870912 null) [[ATTR1:#.*]] [ "preallocated"(token [[C]]) ] ; IS__TUNIT_OPM-NEXT: ret i32* [[CALL]] ; ; IS__TUNIT_NPM: Function Attrs: nofree nosync nounwind willreturn ; IS__TUNIT_NPM-LABEL: define {{[^@]+}}@complicated_args_preallocated ; IS__TUNIT_NPM-SAME: () [[ATTR0:#.*]] { ; IS__TUNIT_NPM-NEXT: [[C:%.*]] = call token @llvm.call.preallocated.setup(i32 noundef 1) [[ATTR4:#.*]] ; IS__TUNIT_NPM-NEXT: [[CALL:%.*]] = call i32* @test_preallocated(i32* noalias nocapture nofree noundef writeonly preallocated(i32) align 536870912 null) [[ATTR1:#.*]] [ "preallocated"(token [[C]]) ] ; IS__TUNIT_NPM-NEXT: ret i32* [[CALL]] ; ; IS__CGSCC_OPM: Function Attrs: nofree nosync nounwind willreturn ; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@complicated_args_preallocated ; IS__CGSCC_OPM-SAME: () [[ATTR0:#.*]] { ; IS__CGSCC_OPM-NEXT: [[C:%.*]] = call token @llvm.call.preallocated.setup(i32 noundef 1) [[ATTR5]] ; IS__CGSCC_OPM-NEXT: [[CALL:%.*]] = call i32* @test_preallocated(i32* noalias nocapture nofree noundef writeonly preallocated(i32) align 536870912 null) [[ATTR6:#.*]] [ "preallocated"(token [[C]]) ] ; IS__CGSCC_OPM-NEXT: ret i32* [[CALL]] ; ; IS__CGSCC_NPM: Function Attrs: nofree nosync nounwind willreturn ; IS__CGSCC_NPM-LABEL: define {{[^@]+}}@complicated_args_preallocated ; IS__CGSCC_NPM-SAME: () [[ATTR0:#.*]] { ; IS__CGSCC_NPM-NEXT: [[C:%.*]] = call token @llvm.call.preallocated.setup(i32 noundef 1) [[ATTR4]] ; IS__CGSCC_NPM-NEXT: [[CALL:%.*]] = call i32* @test_preallocated(i32* noalias nocapture nofree noundef writeonly preallocated(i32) align 536870912 null) [[ATTR5:#.*]] [ "preallocated"(token [[C]]) ] ; IS__CGSCC_NPM-NEXT: ret i32* [[CALL]] ; %c = call token @llvm.call.preallocated.setup(i32 1) %call = call i32* @test_preallocated(i32* preallocated(i32) null) ["preallocated"(token %c)] ret i32* %call } define internal void @test_sret(%struct.X* sret(%struct.X) %a, %struct.X** %b) { ; ; IS__TUNIT____: Function Attrs: argmemonly nofree nosync nounwind willreturn writeonly ; IS__TUNIT____-LABEL: define {{[^@]+}}@test_sret ; IS__TUNIT____-SAME: (%struct.X* noalias nofree noundef nonnull writeonly sret(%struct.X) align 536870912 dereferenceable(8) [[A:%.*]], %struct.X** nocapture nofree nonnull writeonly align 8 dereferenceable(8) [[B:%.*]]) [[ATTR2:#.*]] { ; IS__TUNIT____-NEXT: store %struct.X* [[A]], %struct.X** [[B]], align 8 ; IS__TUNIT____-NEXT: ret void ; ; IS__CGSCC____: Function Attrs: argmemonly nofree norecurse nosync nounwind willreturn writeonly ; IS__CGSCC____-LABEL: define {{[^@]+}}@test_sret ; IS__CGSCC____-SAME: (%struct.X* noalias nofree noundef nonnull writeonly sret(%struct.X) align 536870912 dereferenceable(8) [[A:%.*]], %struct.X** nocapture nofree nonnull writeonly align 8 dereferenceable(8) [[B:%.*]]) [[ATTR2:#.*]] { ; IS__CGSCC____-NEXT: store %struct.X* [[A]], %struct.X** [[B]], align 8 ; IS__CGSCC____-NEXT: ret void ; store %struct.X* %a, %struct.X** %b ret void } ; FIXME: Alignment and dereferenceability are not propagated to the argument define void @complicated_args_sret(%struct.X** %b) { ; ; IS__TUNIT_OPM: Function Attrs: argmemonly nofree nosync nounwind willreturn writeonly ; IS__TUNIT_OPM-LABEL: define {{[^@]+}}@complicated_args_sret ; IS__TUNIT_OPM-SAME: (%struct.X** nocapture nofree writeonly [[B:%.*]]) [[ATTR2:#.*]] { ; IS__TUNIT_OPM-NEXT: call void @test_sret(%struct.X* noalias nocapture nofree noundef writeonly align 536870912 null, %struct.X** nocapture nofree writeonly align 8 [[B]]) [[ATTR6:#.*]] ; IS__TUNIT_OPM-NEXT: ret void ; ; IS__TUNIT_NPM: Function Attrs: argmemonly nofree nosync nounwind willreturn writeonly ; IS__TUNIT_NPM-LABEL: define {{[^@]+}}@complicated_args_sret ; IS__TUNIT_NPM-SAME: (%struct.X** nocapture nofree writeonly [[B:%.*]]) [[ATTR2:#.*]] { ; IS__TUNIT_NPM-NEXT: call void @test_sret(%struct.X* noalias nocapture nofree noundef writeonly align 536870912 null, %struct.X** nocapture nofree writeonly align 8 [[B]]) [[ATTR5:#.*]] ; IS__TUNIT_NPM-NEXT: ret void ; ; IS__CGSCC____: Function Attrs: argmemonly nofree norecurse nosync nounwind willreturn writeonly ; IS__CGSCC____-LABEL: define {{[^@]+}}@complicated_args_sret ; IS__CGSCC____-SAME: (%struct.X** nocapture nofree nonnull writeonly align 8 dereferenceable(8) [[B:%.*]]) [[ATTR2]] { ; IS__CGSCC____-NEXT: unreachable ; call void @test_sret(%struct.X* null, %struct.X** %b) ret void } define internal %struct.X* @test_nest(%struct.X* nest %a) { ; IS__TUNIT____: Function Attrs: nofree nosync nounwind readnone willreturn ; IS__TUNIT____-LABEL: define {{[^@]+}}@test_nest ; IS__TUNIT____-SAME: (%struct.X* nest noalias nofree noundef readnone returned align 536870912 "no-capture-maybe-returned" [[A:%.*]]) [[ATTR1]] { ; IS__TUNIT____-NEXT: ret %struct.X* [[A]] ; ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC____-LABEL: define {{[^@]+}}@test_nest ; IS__CGSCC____-SAME: (%struct.X* nest noalias nofree noundef readnone returned align 536870912 "no-capture-maybe-returned" [[A:%.*]]) [[ATTR1]] { ; IS__CGSCC____-NEXT: ret %struct.X* [[A]] ; ret %struct.X* %a } define %struct.X* @complicated_args_nest() { ; IS__TUNIT____: Function Attrs: nofree nosync nounwind readnone willreturn ; IS__TUNIT____-LABEL: define {{[^@]+}}@complicated_args_nest ; IS__TUNIT____-SAME: () [[ATTR1]] { ; IS__TUNIT____-NEXT: [[CALL:%.*]] = call %struct.X* @test_nest(%struct.X* noalias nocapture nofree noundef readnone align 536870912 null) [[ATTR1]] ; IS__TUNIT____-NEXT: ret %struct.X* [[CALL]] ; ; IS__CGSCC_OPM: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@complicated_args_nest ; IS__CGSCC_OPM-SAME: () [[ATTR1]] { ; IS__CGSCC_OPM-NEXT: [[CALL:%.*]] = call %struct.X* @test_nest(%struct.X* noalias nocapture nofree noundef readnone align 536870912 null) [[ATTR5]] ; IS__CGSCC_OPM-NEXT: ret %struct.X* [[CALL]] ; ; IS__CGSCC_NPM: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC_NPM-LABEL: define {{[^@]+}}@complicated_args_nest ; IS__CGSCC_NPM-SAME: () [[ATTR1]] { ; IS__CGSCC_NPM-NEXT: [[CALL:%.*]] = call %struct.X* @test_nest(%struct.X* noalias nocapture nofree noundef readnone align 536870912 null) [[ATTR4]] ; IS__CGSCC_NPM-NEXT: ret %struct.X* [[CALL]] ; %call = call %struct.X* @test_nest(%struct.X* null) ret %struct.X* %call } @S = external global %struct.X define internal void @test_byval(%struct.X* byval(%struct.X) %a) { ; IS__CGSCC_OPM: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@test_byval ; IS__CGSCC_OPM-SAME: (%struct.X* noalias nocapture nofree noundef nonnull writeonly byval(%struct.X) align 8 dereferenceable(8) [[A:%.*]]) [[ATTR1]] { ; IS__CGSCC_OPM-NEXT: [[G0:%.*]] = getelementptr [[STRUCT_X:%.*]], %struct.X* [[A]], i32 0, i32 0 ; IS__CGSCC_OPM-NEXT: store i8* null, i8** [[G0]], align 8 ; IS__CGSCC_OPM-NEXT: ret void ; ; IS__CGSCC_NPM: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC_NPM-LABEL: define {{[^@]+}}@test_byval ; IS__CGSCC_NPM-SAME: (i8* noalias nocapture nofree readnone [[TMP0:%.*]]) [[ATTR1]] { ; IS__CGSCC_NPM-NEXT: [[A_PRIV:%.*]] = alloca [[STRUCT_X:%.*]], align 8 ; IS__CGSCC_NPM-NEXT: [[A_PRIV_CAST:%.*]] = bitcast %struct.X* [[A_PRIV]] to i8** ; IS__CGSCC_NPM-NEXT: store i8* [[TMP0]], i8** [[A_PRIV_CAST]], align 8 ; IS__CGSCC_NPM-NEXT: [[G0:%.*]] = getelementptr [[STRUCT_X]], %struct.X* [[A_PRIV]], i32 0, i32 0 ; IS__CGSCC_NPM-NEXT: store i8* null, i8** [[G0]], align 8 ; IS__CGSCC_NPM-NEXT: ret void ; %g0 = getelementptr %struct.X, %struct.X* %a, i32 0, i32 0 store i8* null, i8** %g0 ret void } define void @complicated_args_byval() { ; IS__TUNIT____: Function Attrs: nofree nosync nounwind readnone willreturn ; IS__TUNIT____-LABEL: define {{[^@]+}}@complicated_args_byval ; IS__TUNIT____-SAME: () [[ATTR1]] { ; IS__TUNIT____-NEXT: ret void ; ; IS__CGSCC_OPM: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@complicated_args_byval ; IS__CGSCC_OPM-SAME: () [[ATTR1]] { ; IS__CGSCC_OPM-NEXT: ret void ; ; IS__CGSCC_NPM: Function Attrs: nofree norecurse nosync nounwind readonly willreturn ; IS__CGSCC_NPM-LABEL: define {{[^@]+}}@complicated_args_byval ; IS__CGSCC_NPM-SAME: () [[ATTR3:#.*]] { ; IS__CGSCC_NPM-NEXT: ret void ; call void @test_byval(%struct.X* @S) ret void } define internal i8*@test_byval2(%struct.X* byval(%struct.X) %a) { ; IS__TUNIT____: Function Attrs: nofree nosync nounwind readonly willreturn ; IS__TUNIT____-LABEL: define {{[^@]+}}@test_byval2 ; IS__TUNIT____-SAME: () [[ATTR3:#.*]] { ; IS__TUNIT____-NEXT: [[G0:%.*]] = getelementptr [[STRUCT_X:%.*]], %struct.X* @S, i32 0, i32 0 ; IS__TUNIT____-NEXT: [[L:%.*]] = load i8*, i8** [[G0]], align 8 ; IS__TUNIT____-NEXT: ret i8* [[L]] ; ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readonly willreturn ; IS__CGSCC____-LABEL: define {{[^@]+}}@test_byval2 ; IS__CGSCC____-SAME: () [[ATTR3:#.*]] { ; IS__CGSCC____-NEXT: [[G0:%.*]] = getelementptr [[STRUCT_X:%.*]], %struct.X* @S, i32 0, i32 0 ; IS__CGSCC____-NEXT: [[L:%.*]] = load i8*, i8** [[G0]], align 8 ; IS__CGSCC____-NEXT: ret i8* [[L]] ; %g0 = getelementptr %struct.X, %struct.X* %a, i32 0, i32 0 %l = load i8*, i8** %g0 ret i8* %l } define i8* @complicated_args_byval2() { ; IS__TUNIT____: Function Attrs: nofree nosync nounwind readonly willreturn ; IS__TUNIT____-LABEL: define {{[^@]+}}@complicated_args_byval2 ; IS__TUNIT____-SAME: () [[ATTR3]] { ; IS__TUNIT____-NEXT: [[C:%.*]] = call i8* @test_byval2() [[ATTR3]] ; IS__TUNIT____-NEXT: ret i8* [[C]] ; ; IS__CGSCC_OPM: Function Attrs: nofree norecurse nosync nounwind readonly willreturn ; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@complicated_args_byval2 ; IS__CGSCC_OPM-SAME: () [[ATTR3:#.*]] { ; IS__CGSCC_OPM-NEXT: [[C:%.*]] = call i8* @test_byval2() [[ATTR7:#.*]] ; IS__CGSCC_OPM-NEXT: ret i8* [[C]] ; ; IS__CGSCC_NPM: Function Attrs: nofree norecurse nosync nounwind readonly willreturn ; IS__CGSCC_NPM-LABEL: define {{[^@]+}}@complicated_args_byval2 ; IS__CGSCC_NPM-SAME: () [[ATTR3]] { ; IS__CGSCC_NPM-NEXT: [[C:%.*]] = call i8* @test_byval2() [[ATTR6:#.*]] ; IS__CGSCC_NPM-NEXT: ret i8* [[C]] ; %c = call i8* @test_byval2(%struct.X* @S) ret i8* %c } define void @fixpoint_changed(i32* %p) { ; IS__TUNIT_OPM: Function Attrs: argmemonly nofree nosync nounwind writeonly ; IS__TUNIT_OPM-LABEL: define {{[^@]+}}@fixpoint_changed ; IS__TUNIT_OPM-SAME: (i32* nocapture nofree writeonly [[P:%.*]]) [[ATTR4:#.*]] { ; IS__TUNIT_OPM-NEXT: entry: ; IS__TUNIT_OPM-NEXT: br label [[FOR_COND:%.*]] ; IS__TUNIT_OPM: for.cond: ; IS__TUNIT_OPM-NEXT: [[J_0:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[SW_EPILOG:%.*]] ] ; IS__TUNIT_OPM-NEXT: [[CMP:%.*]] = icmp slt i32 [[J_0]], 30 ; IS__TUNIT_OPM-NEXT: br i1 [[CMP]], label [[FOR_BODY:%.*]], label [[FOR_END:%.*]] ; IS__TUNIT_OPM: for.body: ; IS__TUNIT_OPM-NEXT: switch i32 [[J_0]], label [[SW_EPILOG]] [ ; IS__TUNIT_OPM-NEXT: i32 1, label [[SW_BB:%.*]] ; IS__TUNIT_OPM-NEXT: ] ; IS__TUNIT_OPM: sw.bb: ; IS__TUNIT_OPM-NEXT: br label [[SW_EPILOG]] ; IS__TUNIT_OPM: sw.epilog: ; IS__TUNIT_OPM-NEXT: [[X_0:%.*]] = phi i32 [ 255, [[FOR_BODY]] ], [ 253, [[SW_BB]] ] ; IS__TUNIT_OPM-NEXT: store i32 [[X_0]], i32* [[P]], align 4 ; IS__TUNIT_OPM-NEXT: [[INC]] = add nsw i32 [[J_0]], 1 ; IS__TUNIT_OPM-NEXT: br label [[FOR_COND]] ; IS__TUNIT_OPM: for.end: ; IS__TUNIT_OPM-NEXT: ret void ; ; IS__TUNIT_NPM: Function Attrs: argmemonly nofree nosync nounwind willreturn writeonly ; IS__TUNIT_NPM-LABEL: define {{[^@]+}}@fixpoint_changed ; IS__TUNIT_NPM-SAME: (i32* nocapture nofree writeonly [[P:%.*]]) [[ATTR2]] { ; IS__TUNIT_NPM-NEXT: entry: ; IS__TUNIT_NPM-NEXT: br label [[FOR_COND:%.*]] ; IS__TUNIT_NPM: for.cond: ; IS__TUNIT_NPM-NEXT: [[J_0:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[SW_EPILOG:%.*]] ] ; IS__TUNIT_NPM-NEXT: [[CMP:%.*]] = icmp slt i32 [[J_0]], 30 ; IS__TUNIT_NPM-NEXT: br i1 [[CMP]], label [[FOR_BODY:%.*]], label [[FOR_END:%.*]] ; IS__TUNIT_NPM: for.body: ; IS__TUNIT_NPM-NEXT: switch i32 [[J_0]], label [[SW_EPILOG]] [ ; IS__TUNIT_NPM-NEXT: i32 1, label [[SW_BB:%.*]] ; IS__TUNIT_NPM-NEXT: ] ; IS__TUNIT_NPM: sw.bb: ; IS__TUNIT_NPM-NEXT: br label [[SW_EPILOG]] ; IS__TUNIT_NPM: sw.epilog: ; IS__TUNIT_NPM-NEXT: [[X_0:%.*]] = phi i32 [ 255, [[FOR_BODY]] ], [ 253, [[SW_BB]] ] ; IS__TUNIT_NPM-NEXT: store i32 [[X_0]], i32* [[P]], align 4 ; IS__TUNIT_NPM-NEXT: [[INC]] = add nsw i32 [[J_0]], 1 ; IS__TUNIT_NPM-NEXT: br label [[FOR_COND]] ; IS__TUNIT_NPM: for.end: ; IS__TUNIT_NPM-NEXT: ret void ; ; IS__CGSCC_OPM: Function Attrs: argmemonly nofree norecurse nosync nounwind writeonly ; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@fixpoint_changed ; IS__CGSCC_OPM-SAME: (i32* nocapture nofree writeonly [[P:%.*]]) [[ATTR4:#.*]] { ; IS__CGSCC_OPM-NEXT: entry: ; IS__CGSCC_OPM-NEXT: br label [[FOR_COND:%.*]] ; IS__CGSCC_OPM: for.cond: ; IS__CGSCC_OPM-NEXT: [[J_0:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[SW_EPILOG:%.*]] ] ; IS__CGSCC_OPM-NEXT: [[CMP:%.*]] = icmp slt i32 [[J_0]], 30 ; IS__CGSCC_OPM-NEXT: br i1 [[CMP]], label [[FOR_BODY:%.*]], label [[FOR_END:%.*]] ; IS__CGSCC_OPM: for.body: ; IS__CGSCC_OPM-NEXT: switch i32 [[J_0]], label [[SW_EPILOG]] [ ; IS__CGSCC_OPM-NEXT: i32 1, label [[SW_BB:%.*]] ; IS__CGSCC_OPM-NEXT: ] ; IS__CGSCC_OPM: sw.bb: ; IS__CGSCC_OPM-NEXT: br label [[SW_EPILOG]] ; IS__CGSCC_OPM: sw.epilog: ; IS__CGSCC_OPM-NEXT: [[X_0:%.*]] = phi i32 [ 255, [[FOR_BODY]] ], [ 253, [[SW_BB]] ] ; IS__CGSCC_OPM-NEXT: store i32 [[X_0]], i32* [[P]], align 4 ; IS__CGSCC_OPM-NEXT: [[INC]] = add nsw i32 [[J_0]], 1 ; IS__CGSCC_OPM-NEXT: br label [[FOR_COND]] ; IS__CGSCC_OPM: for.end: ; IS__CGSCC_OPM-NEXT: ret void ; ; IS__CGSCC_NPM: Function Attrs: argmemonly nofree norecurse nosync nounwind willreturn writeonly ; IS__CGSCC_NPM-LABEL: define {{[^@]+}}@fixpoint_changed ; IS__CGSCC_NPM-SAME: (i32* nocapture nofree writeonly [[P:%.*]]) [[ATTR2:#.*]] { ; IS__CGSCC_NPM-NEXT: entry: ; IS__CGSCC_NPM-NEXT: br label [[FOR_COND:%.*]] ; IS__CGSCC_NPM: for.cond: ; IS__CGSCC_NPM-NEXT: [[J_0:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[SW_EPILOG:%.*]] ] ; IS__CGSCC_NPM-NEXT: [[CMP:%.*]] = icmp slt i32 [[J_0]], 30 ; IS__CGSCC_NPM-NEXT: br i1 [[CMP]], label [[FOR_BODY:%.*]], label [[FOR_END:%.*]] ; IS__CGSCC_NPM: for.body: ; IS__CGSCC_NPM-NEXT: switch i32 [[J_0]], label [[SW_EPILOG]] [ ; IS__CGSCC_NPM-NEXT: i32 1, label [[SW_BB:%.*]] ; IS__CGSCC_NPM-NEXT: ] ; IS__CGSCC_NPM: sw.bb: ; IS__CGSCC_NPM-NEXT: br label [[SW_EPILOG]] ; IS__CGSCC_NPM: sw.epilog: ; IS__CGSCC_NPM-NEXT: [[X_0:%.*]] = phi i32 [ 255, [[FOR_BODY]] ], [ 253, [[SW_BB]] ] ; IS__CGSCC_NPM-NEXT: store i32 [[X_0]], i32* [[P]], align 4 ; IS__CGSCC_NPM-NEXT: [[INC]] = add nsw i32 [[J_0]], 1 ; IS__CGSCC_NPM-NEXT: br label [[FOR_COND]] ; IS__CGSCC_NPM: for.end: ; IS__CGSCC_NPM-NEXT: ret void ; entry: br label %for.cond for.cond: %j.0 = phi i32 [ 0, %entry ], [ %inc, %sw.epilog ] %cmp = icmp slt i32 %j.0, 30 br i1 %cmp, label %for.body, label %for.end for.body: switch i32 %j.0, label %sw.epilog [ i32 1, label %sw.bb ] sw.bb: br label %sw.epilog sw.epilog: %x.0 = phi i32 [ 255, %for.body ], [ 253, %sw.bb ] store i32 %x.0, i32* %p %inc = add nsw i32 %j.0, 1 br label %for.cond for.end: ret void } ; Check we merge undef and a constant properly. define i8 @caller0() { ; IS__TUNIT____: Function Attrs: nofree nosync nounwind readnone willreturn ; IS__TUNIT____-LABEL: define {{[^@]+}}@caller0 ; IS__TUNIT____-SAME: () [[ATTR1]] { ; IS__TUNIT____-NEXT: ret i8 49 ; ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC____-LABEL: define {{[^@]+}}@caller0 ; IS__CGSCC____-SAME: () [[ATTR1]] { ; IS__CGSCC____-NEXT: ret i8 49 ; %c = call i8 @callee(i8 undef) ret i8 %c } define i8 @caller1() { ; IS__TUNIT____: Function Attrs: nofree nosync nounwind readnone willreturn ; IS__TUNIT____-LABEL: define {{[^@]+}}@caller1 ; IS__TUNIT____-SAME: () [[ATTR1]] { ; IS__TUNIT____-NEXT: ret i8 49 ; ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC____-LABEL: define {{[^@]+}}@caller1 ; IS__CGSCC____-SAME: () [[ATTR1]] { ; IS__CGSCC____-NEXT: ret i8 49 ; %c = call i8 @callee(i8 undef) ret i8 %c } define i8 @caller2() { ; IS__TUNIT____: Function Attrs: nofree nosync nounwind readnone willreturn ; IS__TUNIT____-LABEL: define {{[^@]+}}@caller2 ; IS__TUNIT____-SAME: () [[ATTR1]] { ; IS__TUNIT____-NEXT: ret i8 49 ; ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC____-LABEL: define {{[^@]+}}@caller2 ; IS__CGSCC____-SAME: () [[ATTR1]] { ; IS__CGSCC____-NEXT: ret i8 49 ; %c = call i8 @callee(i8 undef) ret i8 %c } define i8 @caller_middle() { ; IS__TUNIT____: Function Attrs: nofree nosync nounwind readnone willreturn ; IS__TUNIT____-LABEL: define {{[^@]+}}@caller_middle ; IS__TUNIT____-SAME: () [[ATTR1]] { ; IS__TUNIT____-NEXT: ret i8 49 ; ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC____-LABEL: define {{[^@]+}}@caller_middle ; IS__CGSCC____-SAME: () [[ATTR1]] { ; IS__CGSCC____-NEXT: ret i8 49 ; %c = call i8 @callee(i8 42) ret i8 %c } define i8 @caller3() { ; IS__TUNIT____: Function Attrs: nofree nosync nounwind readnone willreturn ; IS__TUNIT____-LABEL: define {{[^@]+}}@caller3 ; IS__TUNIT____-SAME: () [[ATTR1]] { ; IS__TUNIT____-NEXT: ret i8 49 ; ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC____-LABEL: define {{[^@]+}}@caller3 ; IS__CGSCC____-SAME: () [[ATTR1]] { ; IS__CGSCC____-NEXT: ret i8 49 ; %c = call i8 @callee(i8 undef) ret i8 %c } define i8 @caller4() { ; IS__TUNIT____: Function Attrs: nofree nosync nounwind readnone willreturn ; IS__TUNIT____-LABEL: define {{[^@]+}}@caller4 ; IS__TUNIT____-SAME: () [[ATTR1]] { ; IS__TUNIT____-NEXT: ret i8 49 ; ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC____-LABEL: define {{[^@]+}}@caller4 ; IS__CGSCC____-SAME: () [[ATTR1]] { ; IS__CGSCC____-NEXT: ret i8 49 ; %c = call i8 @callee(i8 undef) ret i8 %c } define internal i8 @callee(i8 %a) { ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC____-LABEL: define {{[^@]+}}@callee ; IS__CGSCC____-SAME: () [[ATTR1]] { ; IS__CGSCC____-NEXT: ret i8 undef ; %c = add i8 %a, 7 ret i8 %c } define i1 @icmp() { ; IS__TUNIT____: Function Attrs: nofree nosync nounwind readnone willreturn ; IS__TUNIT____-LABEL: define {{[^@]+}}@icmp ; IS__TUNIT____-SAME: () [[ATTR1]] { ; IS__TUNIT____-NEXT: ret i1 true ; ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn ; IS__CGSCC____-LABEL: define {{[^@]+}}@icmp ; IS__CGSCC____-SAME: () [[ATTR1]] { ; IS__CGSCC____-NEXT: ret i1 true ; %c = icmp eq i8* null, null ret i1 %c }