https://gcc.gnu.org/g:a1fb757342058111fddcdc5ca2f866c61e87c9b8
commit r16-2462-ga1fb757342058111fddcdc5ca2f866c61e87c9b8
Author: Jeevitha <jeevi...@linux.ibm.com>
Date: Wed Jul 23 23:39:13 2025 -0500
testsuite: Fix gcc.target/powerpc/vsx-builtin-7.c test [PR119382]
The test vsx-builtin-7.c failed on powerpc64le-linux due to Identical
Code Folding (ICF) merging the functions insert_di_0_v2 and insert_di_0.
This behavior was introduced by commit r15-7961-gdc47161c1f32c3, which
enhanced alias analysis in ao_compare::compare_ao_refs, enabling the
compiler to identify and optimize structurally identical functions. As a
result, the compiler replaced insert_di_0_v2 with a tail call to
insert_di_0, altering the expected test behavior.
This patch adds -fno-ipa-icf to the test's dg-options to disable ICF,
avoiding function merging and ensuring the test executes correctly.
2025-06-24 Jeevitha Palanisamy <jeevi...@linux.ibm.com>
gcc/testsuite/
PR testsuite/119382
* gcc.target/powerpc/vsx-builtin-7.c: Add '-fno-ipa-icf' to
dg-options.
Diff:
---
gcc/testsuite/gcc.target/powerpc/vsx-builtin-7.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/gcc/testsuite/gcc.target/powerpc/vsx-builtin-7.c
b/gcc/testsuite/gcc.target/powerpc/vsx-builtin-7.c
index 5095d5030fdd..312043b2c7f5 100644
--- a/gcc/testsuite/gcc.target/powerpc/vsx-builtin-7.c
+++ b/gcc/testsuite/gcc.target/powerpc/vsx-builtin-7.c
@@ -1,8 +1,16 @@
/* { dg-do compile { target { powerpc*-*-* } } } */
/* { dg-skip-if "" { powerpc*-*-darwin* } } */
-/* { dg-options "-O2 -mdejagnu-cpu=power7 -fno-inline-functions" } */
+/* { dg-options "-O2 -mdejagnu-cpu=power7 -fno-inline-functions -fno-ipa-icf"
} */
/* { dg-require-effective-target powerpc_vsx } */
+/* PR testsuite/119382
+ Note: Added -fno-ipa-icf to disable Interprocedural Identical Code
+ Folding (ICF). Without this, insert_di_0_v2 is merged with insert_di_0
+ due to improved alias analysis introduced in commit
r15-7961-gdc47161c1f32c3.
+ This results in the compiler replacing insert_di_0_v2 with a tail call to
+ insert_di_0, altering expected test behavior. Disabling ICF ensures correct
+ execution of the test. */
+
/* Test simple extract/insert/slat operations. Make sure all types are
supported with various options. */
