https://gcc.gnu.org/g:e09abf06ad4cf771097df10a77a4eabb5184d116
commit e09abf06ad4cf771097df10a77a4eabb5184d116
Author: Michael Meissner <meiss...@linux.ibm.com>
Date: Sat Nov 16 00:09:50 2024 -0500
Update ChangeLog.*
Diff:
---
gcc/ChangeLog.meissner | 39 +++++++++++++++++++++++++++++++++++++++
1 file changed, 39 insertions(+)
diff --git a/gcc/ChangeLog.meissner b/gcc/ChangeLog.meissner
index a712a5abf213..49826411141c 100644
--- a/gcc/ChangeLog.meissner
+++ b/gcc/ChangeLog.meissner
@@ -1,3 +1,42 @@
+==================== Branch work186, patch #80 ====================
+
+Do not allow -mvsx to boost processor to power7.
+
+This patch restructures the code so that -mvsx for example will not silently
+convert the processor to power7. The user must now use -mcpu=power7 or higher.
+This means if the user does -mvsx and the default processor does not have VSX
+support, it will be an error.
+
+I have built both big endian and little endian bootstrap compilers and there
+were no regressions.
+
+I updated the 2 tests that used -mvsx to raise the cpu to power7, and the test
+case that checks if -mno-vsx produces the expected warning.
+
+Note, Peter had some questions about one of the tests in the previous version
of
+the patch. The test is still the same in this patch. But the code for
+preventing -mvsx is different from the previous patch, and I wanted to get that
+patch for review before stage1 closes.
+
+Can I install this patch on the GCC 15 trunk?
+
+2024-11-16 Michael Meissner <meiss...@linux.ibm.com>
+
+gcc/
+
+ * config/rs6000/rs6000.cc (rs6000_option_override_internal): Check if
+ the user asked for VSX instructions whether the cpu was at least power7.
+
+gcc/testsuite/
+
+ * gcc.target/powerpc/ppc-target-4.c: Rewrite the test to add cpu=power7
+ when we need to add VSX support. Add test for adding cpu=power7 no-vsx
+ to generate only Altivec instructions.
+ * gcc.target/powerpc/pr115688.c: Add cpu=power7 in target __attribute__
+ when requesting VSX instructions.
+ * gcc.target/powerpc/pr87496-1.c: Update options to use
+ -mdejagnu-cpu=power6 to get the appropriate error message.
+
==================== Branch work186, patch #73 ====================
Use vector pair load/store for memcpy with -mcpu=future
