Module Name: src
Committed By: rin
Date: Fri Apr 16 02:18:04 UTC 2021
Modified Files:
src/external/gpl3/gcc/dist/gcc/config/rs6000: rs6000.c
Log Message:
Fix regression introduced to GCC10, by which inline assembler codes for
403/405 are miscompiled.
Redundant .machine directive introduced by upstream commit
2d94f7dea9c73ef3c116a0ddc722724578a860fe:
https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=2d94f7dea9c73ef3c116a0ddc722724578a860fe
clobbers CPU flags passed to assembler. This results in miscompile for
inline assembler codes specific to 403/405 processors, at least.
Therefore, revert this commit locally.
The problem has been reported as 100107 to upstream:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100107
OK mrg
To generate a diff of this commit:
cvs rdiff -u -r1.24 -r1.25 \
src/external/gpl3/gcc/dist/gcc/config/rs6000/rs6000.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/external/gpl3/gcc/dist/gcc/config/rs6000/rs6000.c
diff -u src/external/gpl3/gcc/dist/gcc/config/rs6000/rs6000.c:1.24 src/external/gpl3/gcc/dist/gcc/config/rs6000/rs6000.c:1.25
--- src/external/gpl3/gcc/dist/gcc/config/rs6000/rs6000.c:1.24 Mon Apr 12 07:23:06 2021
+++ src/external/gpl3/gcc/dist/gcc/config/rs6000/rs6000.c Fri Apr 16 02:18:04 2021
@@ -5644,7 +5644,9 @@ rs6000_file_start (void)
#ifdef USING_ELFOS_H
rs6000_machine = rs6000_machine_from_flags ();
- emit_asm_machine ();
+ if (!(rs6000_default_cpu && rs6000_default_cpu[0])
+ && !global_options_set.x_rs6000_cpu_index)
+ emit_asm_machine ();
#endif
if (DEFAULT_ABI == ABI_ELFv2)
