Hi,
The patch below disables generation of the branch likely instructions for -Os
but only for generic architecture. The branch likely may result in some
code size reduction but the cost of running the code on R6 core is significant.
Disabling this for generic architecture would therefore be desirable for now.
Ok to apply?
Regards,
Robert
gcc/
* mips.c (mips_option_override): Enable branch likely for non-generic
architecture.
---
gcc/config/mips/mips.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gcc/config/mips/mips.c b/gcc/config/mips/mips.c
index a9829bd..68def06 100644
--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
@@ -19564,7 +19564,7 @@ mips_option_override (void)
if ((target_flags_explicit & MASK_BRANCHLIKELY) == 0)
{
if (ISA_HAS_BRANCHLIKELY
- && (optimize_size
+ && ((optimize_size && strncmp (mips_arch_info->name, "mips", 4) != 0)
|| (mips_tune_info->tune_flags & PTF_AVOID_BRANCHLIKELY) == 0))
target_flags |= MASK_BRANCHLIKELY;
else
--
2.4.5
