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[CodeGen][test] Use FileCheck variable matchers for better test support 

Summary: Depending on how clang is built, it may discard the IR names and use names like `%2` instead of `%result.ptr`, causing tests that rely on the IR name to fail. Using FileCheck matchers makes the test work regardless of how clang is built.

This test passes with both `-fno-discard-value-names` and `-fdiscard-value-names` to make sure it passes regardless of the build mode.

Reviewers: rnk, akhuang, aprantl, lebedev.ri

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D63625

llvm-svn: 363996
This commit is contained in:
Jordan Rupprecht 2019-06-20 22:35:52 +00:00
parent 5c287f751a
commit 73986707bd
1 changed files with 12 additions and 5 deletions
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17
clang/test/CodeGenCXX/debug-info-nrvo.cpp
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@ -1,5 +1,10 @@
// RUN: %clangxx -target x86_64-unknown-unknown -g %s -emit-llvm -S -o - | FileCheck %s
// RUN: %clangxx -target x86_64-unknown-unknown -g -fno-elide-constructors %s -emit-llvm -S -o - | FileCheck %s -check-prefix=NOELIDE
// RUN: %clangxx -target x86_64-unknown-unknown -g \
// RUN: %s -emit-llvm -S -o - | FileCheck %s
// RUN: %clangxx -target x86_64-unknown-unknown -g \
// RUN: -fno-elide-constructors %s -emit-llvm -S -o - | \
// RUN: FileCheck %s -check-prefix=NOELIDE
struct Foo {
Foo() = default;
Foo(Foo &&other) { x = other.x; }
@ -21,8 +26,10 @@ int main() {
// Check that NRVO variables are stored as a pointer with deref if they are
// stored in the return register.
// CHECK: %result.ptr = alloca i8*, align 8
// CHECK: call void @llvm.dbg.declare(metadata i8** %result.ptr,
// CHECK: %[[RESULT:.*]] = alloca i8*, align 8
// CHECK: call void @llvm.dbg.declare(metadata i8** %[[RESULT]],
// CHECK-SAME: metadata !DIExpression(DW_OP_deref)
// NOELIDE: call void @llvm.dbg.declare(metadata %struct.Foo* %foo,
// NOELIDE: %[[FOO:.*]] = alloca %struct.Foo, align 4
// NOELIDE: call void @llvm.dbg.declare(metadata %struct.Foo* %[[FOO]],
// NOELIDE-SAME: metadata !DIExpression()