224 lines
7.4 KiB
LLVM
224 lines
7.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -inline-threshold=0 -passes=always-inline -S | FileCheck %s
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; RUN: opt < %s -passes=always-inline -S | FileCheck %s
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declare ptr @foo(ptr) nounwind willreturn
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define ptr @callee(ptr %p) alwaysinline {
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; CHECK-LABEL: @callee(
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; CHECK-NEXT: [[R:%.*]] = call ptr @foo(ptr noalias [[P:%.*]])
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; CHECK-NEXT: ret ptr [[R]]
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;
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%r = call ptr @foo(ptr noalias %p)
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ret ptr %r
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}
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define ptr @caller(ptr %ptr, i64 %x) {
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; CHECK-LABEL: @caller(
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[PTR:%.*]], i64 [[X:%.*]]
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; CHECK-NEXT: [[R_I:%.*]] = call nonnull ptr @foo(ptr noalias [[GEP]])
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; CHECK-NEXT: ret ptr [[R_I]]
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;
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%gep = getelementptr inbounds i8, ptr %ptr, i64 %x
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%p = call nonnull ptr @callee(ptr %gep)
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ret ptr %p
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}
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declare void @llvm.experimental.guard(i1,...)
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; Cannot add nonnull attribute to foo
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; because the guard is a throwing call
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define internal ptr @callee_with_throwable(ptr %p) alwaysinline {
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%r = call ptr @foo(ptr %p)
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%cond = icmp ne ptr %r, null
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call void (i1, ...) @llvm.experimental.guard(i1 %cond) [ "deopt"() ]
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ret ptr %r
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}
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declare ptr @bar(ptr) readonly nounwind
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; Here also we cannot add nonnull attribute to the call bar.
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define internal ptr @callee_with_explicit_control_flow(ptr %p) alwaysinline {
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%r = call ptr @bar(ptr %p)
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%cond = icmp ne ptr %r, null
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br i1 %cond, label %ret, label %orig
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ret:
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ret ptr %r
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orig:
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ret ptr %p
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}
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define ptr @caller2(ptr %ptr, i64 %x, i1 %cond) {
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; CHECK-LABEL: @caller2(
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[PTR:%.*]], i64 [[X:%.*]]
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; CHECK-NEXT: [[R_I:%.*]] = call ptr @foo(ptr [[GEP]])
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; CHECK-NEXT: [[COND_I:%.*]] = icmp ne ptr [[R_I]], null
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; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[COND_I]]) [ "deopt"() ]
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; CHECK-NEXT: [[R_I1:%.*]] = call ptr @bar(ptr [[GEP]])
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; CHECK-NEXT: [[COND_I2:%.*]] = icmp ne ptr [[R_I1]], null
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; CHECK-NEXT: br i1 [[COND_I2]], label [[RET_I:%.*]], label [[ORIG_I:%.*]]
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; CHECK: ret.i:
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; CHECK-NEXT: br label [[CALLEE_WITH_EXPLICIT_CONTROL_FLOW_EXIT:%.*]]
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; CHECK: orig.i:
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; CHECK-NEXT: br label [[CALLEE_WITH_EXPLICIT_CONTROL_FLOW_EXIT]]
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; CHECK: callee_with_explicit_control_flow.exit:
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; CHECK-NEXT: [[Q3:%.*]] = phi ptr [ [[R_I1]], [[RET_I]] ], [ [[GEP]], [[ORIG_I]] ]
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; CHECK-NEXT: br i1 [[COND:%.*]], label [[PRET:%.*]], label [[QRET:%.*]]
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; CHECK: pret:
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; CHECK-NEXT: ret ptr [[R_I]]
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; CHECK: qret:
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; CHECK-NEXT: ret ptr [[Q3]]
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;
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%gep = getelementptr inbounds i8, ptr %ptr, i64 %x
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%p = call nonnull ptr @callee_with_throwable(ptr %gep)
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%q = call nonnull ptr @callee_with_explicit_control_flow(ptr %gep)
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br i1 %cond, label %pret, label %qret
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pret:
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ret ptr %p
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qret:
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ret ptr %q
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}
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define internal ptr @callee3(ptr %p) alwaysinline {
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%r = call noalias ptr @foo(ptr %p)
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ret ptr %r
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}
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; add the deref attribute to the existing attributes on foo.
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define ptr @caller3(ptr %ptr, i64 %x) {
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; CHECK-LABEL: @caller3(
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[PTR:%.*]], i64 [[X:%.*]]
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; CHECK-NEXT: [[R_I:%.*]] = call noalias dereferenceable_or_null(12) ptr @foo(ptr [[GEP]])
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; CHECK-NEXT: ret ptr [[R_I]]
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;
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%gep = getelementptr inbounds i8, ptr %ptr, i64 %x
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%p = call dereferenceable_or_null(12) ptr @callee3(ptr %gep)
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ret ptr %p
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}
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declare ptr @inf_loop_call(ptr) nounwind
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; We cannot propagate attributes to foo because we do not know whether inf_loop_call
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; will return execution.
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define internal ptr @callee_with_sideeffect_callsite(ptr %p) alwaysinline {
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%r = call ptr @foo(ptr %p)
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%v = call ptr @inf_loop_call(ptr %p)
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ret ptr %r
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}
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; do not add deref attribute to foo
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define ptr @test4(ptr %ptr, i64 %x) {
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; CHECK-LABEL: @test4(
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[PTR:%.*]], i64 [[X:%.*]]
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; CHECK-NEXT: [[R_I:%.*]] = call ptr @foo(ptr [[GEP]])
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; CHECK-NEXT: [[V_I:%.*]] = call ptr @inf_loop_call(ptr [[GEP]])
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; CHECK-NEXT: ret ptr [[R_I]]
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;
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%gep = getelementptr inbounds i8, ptr %ptr, i64 %x
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%p = call dereferenceable_or_null(12) ptr @callee_with_sideeffect_callsite(ptr %gep)
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ret ptr %p
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}
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declare ptr @baz(ptr) nounwind willreturn
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define internal ptr @callee5(ptr %p) alwaysinline {
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%r = call ptr @foo(ptr %p)
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%v = call ptr @baz(ptr %p)
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ret ptr %r
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}
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; add the deref attribute to foo.
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define ptr @test5(ptr %ptr, i64 %x) {
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; CHECK-LABEL: @test5(
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[PTR:%.*]], i64 [[X:%.*]]
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; CHECK-NEXT: [[R_I:%.*]] = call dereferenceable_or_null(12) ptr @foo(ptr [[GEP]])
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; CHECK-NEXT: [[V_I:%.*]] = call ptr @baz(ptr [[GEP]])
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; CHECK-NEXT: ret ptr [[R_I]]
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;
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%gep = getelementptr inbounds i8, ptr %ptr, i64 %x
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%s = call dereferenceable_or_null(12) ptr @callee5(ptr %gep)
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ret ptr %s
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}
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; deref attributes have different values on the callee and the call feeding into
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; the return.
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; AttrBuilder overwrites the existing value.
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define internal ptr @callee6(ptr %p) alwaysinline {
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%r = call dereferenceable_or_null(16) ptr @foo(ptr %p)
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%v = call ptr @baz(ptr %p)
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ret ptr %r
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}
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define ptr @test6(ptr %ptr, i64 %x) {
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; CHECK-LABEL: @test6(
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[PTR:%.*]], i64 [[X:%.*]]
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; CHECK-NEXT: [[R_I:%.*]] = call dereferenceable_or_null(12) ptr @foo(ptr [[GEP]])
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; CHECK-NEXT: [[V_I:%.*]] = call ptr @baz(ptr [[GEP]])
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; CHECK-NEXT: ret ptr [[R_I]]
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;
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%gep = getelementptr inbounds i8, ptr %ptr, i64 %x
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%s = call dereferenceable_or_null(12) ptr @callee6(ptr %gep)
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ret ptr %s
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}
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; We add the attributes from the callee to both the calls below.
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define internal ptr @callee7(ptr %ptr, i1 %cond) alwaysinline {
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br i1 %cond, label %pass, label %fail
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pass:
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%r = call ptr @foo(ptr noalias %ptr)
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ret ptr %r
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fail:
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%s = call ptr @baz(ptr %ptr)
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ret ptr %s
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}
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define void @test7(ptr %ptr, i64 %x, i1 %cond) {
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; CHECK-LABEL: @test7(
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[PTR:%.*]], i64 [[X:%.*]]
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; CHECK-NEXT: br i1 [[COND:%.*]], label [[PASS_I:%.*]], label [[FAIL_I:%.*]]
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; CHECK: pass.i:
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; CHECK-NEXT: [[R_I:%.*]] = call nonnull ptr @foo(ptr noalias [[GEP]])
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; CHECK-NEXT: br label [[CALLEE7_EXIT:%.*]]
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; CHECK: fail.i:
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; CHECK-NEXT: [[S_I:%.*]] = call nonnull ptr @baz(ptr [[GEP]])
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; CHECK-NEXT: br label [[CALLEE7_EXIT]]
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; CHECK: callee7.exit:
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; CHECK-NEXT: [[T1:%.*]] = phi ptr [ [[R_I]], [[PASS_I]] ], [ [[S_I]], [[FAIL_I]] ]
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; CHECK-NEXT: call void @snort(ptr [[T1]])
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; CHECK-NEXT: ret void
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;
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%gep = getelementptr inbounds i8, ptr %ptr, i64 %x
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%t = call nonnull ptr @callee7(ptr %gep, i1 %cond)
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call void @snort(ptr %t)
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ret void
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}
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declare void @snort(ptr)
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declare i32 @intrinsic(ptr) nounwind argmemonly
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define internal i32 @callee8(ptr %ptr) alwaysinline {
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%r = call i32 @intrinsic(ptr noalias %ptr)
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ret i32 %r
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}
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; signext is an attribute specific to the target ABI and not the
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; callee/callsite.
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; We cannot propagate that attribute to another call since it can be invalid at
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; that call.
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define i32 @test8(ptr %ptr, i64 %x) {
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; CHECK-LABEL: @test8(
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[PTR:%.*]], i64 [[X:%.*]]
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; CHECK-NEXT: [[R_I:%.*]] = call i32 @intrinsic(ptr noalias [[GEP]])
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; CHECK-NEXT: ret i32 [[R_I]]
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;
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%gep = getelementptr inbounds i8, ptr %ptr, i64 %x
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%t = call signext i32 @callee8(ptr %gep)
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ret i32 %t
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}
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