https://github.com/MaggieYingYi updated
https://github.com/llvm/llvm-project/pull/148229
>From c1a8e6af4e7e87ccc10ae282763925e16716b8fa Mon Sep 17 00:00:00 2001
From: Ying Yi <ying...@sony.com>
Date: Mon, 9 Jun 2025 11:14:24 +0100
Subject: [PATCH] [LTO] Enhance unified/nonunified LTO checks.
For the PS targets, unified LTO pipeline is used as default behaviour when
enabling LTO. Other targets use Distinct LTO pipeline behaviour as default
behavious. Unified/nonunified LTO checks are enhanced in this PR:
1. Check that the default, unified, and non-unified behavior for
asan-unified-lto.ll all match (irrespective of what the default
unified/nonunified behavior is).
2. Check that the difference in behavior for 'unified' and 'full' runs is
(regarding the passes) is what is expected (rather than simply that they are
different).
---
clang/test/CodeGen/asan-unified-lto.ll | 1 +
clang/test/CodeGen/unified-lto-pipeline.c | 6 ++++--
2 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/clang/test/CodeGen/asan-unified-lto.ll
b/clang/test/CodeGen/asan-unified-lto.ll
index 7b790d49e3fdb..21734e1fd8f67 100644
--- a/clang/test/CodeGen/asan-unified-lto.ll
+++ b/clang/test/CodeGen/asan-unified-lto.ll
@@ -5,6 +5,7 @@
; RUN: %clang_cc1 -emit-llvm-bc -O1 -flto -fsanitize=address -o - -x ir < %s |
llvm-dis -o - | FileCheck %s
; RUN: %clang_cc1 -emit-llvm-bc -O1 -flto -funified-lto -fsanitize=address -o
- -x ir < %s | llvm-dis -o - | FileCheck %s
+; RUN: %clang_cc1 -emit-llvm-bc -O1 -flto -fno-unified-lto -fsanitize=address
-o - -x ir < %s | llvm-dis -o - | FileCheck %s
; CHECK: @anon.3ee0898e5200a57350fed5485ae5d237
target datalayout =
"e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
diff --git a/clang/test/CodeGen/unified-lto-pipeline.c
b/clang/test/CodeGen/unified-lto-pipeline.c
index e13cd57eed67d..0e0c503256f0b 100644
--- a/clang/test/CodeGen/unified-lto-pipeline.c
+++ b/clang/test/CodeGen/unified-lto-pipeline.c
@@ -11,8 +11,10 @@
/// Check that pass pipelines for thin, thin-unified, full-unified all match.
// RUN: diff %t.0.txt %t.1.txt
// RUN: diff %t.0.txt %t.2.txt
-/// Pass pipeline for full is different.
-// RUN: not diff %t.0.txt %t.3.txt
+/// Pass pipeline for full is different. Unified uses the full Linux pipeline
except ThinLTOBitcodeWriterPass vs BitcodeWriterPass.
+// RUN: not diff -u %t.0.txt %t.3.txt | FileCheck %s --check-prefix=DIFF
--implicit-check-not="{{^[-+!<>] }}"
+// DIFF: -Running pass: ThinLTOBitcodeWriterPass
+// DIFF-NEXT: +Running pass: BitcodeWriterPass
int foo() {
return 2 + 2;
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