72 lines
2.5 KiB
LLVM
72 lines
2.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -inline < %s | FileCheck %s
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; This tests cases where instructions in the callee are simplified to
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; instructions in the caller, thus making VMap contain instructions from
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; the caller. We should not be assigning incorrect noalias metadata in
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; that case.
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declare { i64* } @opaque_callee()
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define { i64* } @callee(i64* %x) {
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; CHECK-LABEL: @callee(
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; CHECK-NEXT: [[RES:%.*]] = insertvalue { i64* } undef, i64* [[X:%.*]], 0
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; CHECK-NEXT: ret { i64* } [[RES]]
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;
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%res = insertvalue { i64* } undef, i64* %x, 0
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ret { i64* } %res
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}
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; @opaque_callee() should not receive noalias metadata here.
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define void @caller() {
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; CHECK-LABEL: @caller(
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; CHECK-NEXT: call void @llvm.experimental.noalias.scope.decl(metadata !0)
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; CHECK-NEXT: [[S:%.*]] = call { i64* } @opaque_callee()
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; CHECK-NEXT: [[X:%.*]] = extractvalue { i64* } [[S]], 0
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; CHECK-NEXT: ret void
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;
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call void @llvm.experimental.noalias.scope.decl(metadata !0)
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%s = call { i64* } @opaque_callee()
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%x = extractvalue { i64* } %s, 0
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call { i64* } @callee(i64* %x), !noalias !0
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ret void
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}
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; @opaque_callee() should no the same noalias metadata as the load from the
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; else branch, not as the load in the if branch.
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define { i64* } @self_caller(i1 %c, i64* %a) {
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; CHECK-LABEL: @self_caller(
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; CHECK-NEXT: call void @llvm.experimental.noalias.scope.decl(metadata !0)
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; CHECK-NEXT: br i1 [[C:%.*]], label [[IF:%.*]], label [[ELSE:%.*]]
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; CHECK: if:
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; CHECK-NEXT: [[S:%.*]] = call { i64* } @opaque_callee(), !noalias !0
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; CHECK-NEXT: [[X:%.*]] = extractvalue { i64* } [[S]], 0
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; CHECK-NEXT: call void @llvm.experimental.noalias.scope.decl(metadata !3)
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; CHECK-NEXT: [[TMP1:%.*]] = load volatile i64, i64* [[X]], align 4, !alias.scope !3
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; CHECK-NEXT: ret { i64* } [[S]]
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; CHECK: else:
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; CHECK-NEXT: [[R2:%.*]] = insertvalue { i64* } undef, i64* [[A:%.*]], 0
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; CHECK-NEXT: [[TMP2:%.*]] = load volatile i64, i64* [[A]], align 4, !alias.scope !0
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; CHECK-NEXT: ret { i64* } [[R2]]
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;
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call void @llvm.experimental.noalias.scope.decl(metadata !0)
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br i1 %c, label %if, label %else
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if:
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%s = call { i64* } @opaque_callee(), !noalias !0
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%x = extractvalue { i64* } %s, 0
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%r = call { i64* } @self_caller(i1 false, i64* %x)
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ret { i64* } %r
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else:
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%r2 = insertvalue { i64* } undef, i64* %a, 0
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load volatile i64, i64* %a, !alias.scope !0
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ret { i64* } %r2
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}
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declare void @llvm.experimental.noalias.scope.decl(metadata)
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!0 = !{!1}
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!1 = !{!1, !2, !"scope"}
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!2 = !{!2, !"domain"}
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