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| author | Paul Burton <paul.burton@imgtec.com> | 2015-09-22 10:07:41 -0700 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2015-10-26 09:49:40 +0100 |
| commit | c1a0e9bc885d46e519fd87d35af6a7937abfb986 (patch) | |
| tree | 164b0f0d9277c233eea8eccb2baa8bb60ec3cf0f /arch/mips/Makefile | |
| parent | 05513992c69d159e698bb4b5f651abd0ceff525c (diff) | |
| download | blackbird-op-linux-c1a0e9bc885d46e519fd87d35af6a7937abfb986.tar.gz blackbird-op-linux-c1a0e9bc885d46e519fd87d35af6a7937abfb986.zip | |
MIPS: Allow compact branch policy to be changed
When debugging it can be helpful to change the policy for compiler use
of MIPSr6 compact branches, in order to rule out or home in on their
involvement in bugs. Allow the GCC -mcompact-branches= flag to be set
via Kconfig under the "Kernel hacking" menu.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11178/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/Makefile')
| -rw-r--r-- | arch/mips/Makefile | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/mips/Makefile b/arch/mips/Makefile index 252e347958f3..3f70ba54ae21 100644 --- a/arch/mips/Makefile +++ b/arch/mips/Makefile @@ -204,6 +204,10 @@ toolchain-msa := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$( cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA endif +cflags-$(CONFIG_MIPS_COMPACT_BRANCHES_NEVER) += -mcompact-branches=never +cflags-$(CONFIG_MIPS_COMPACT_BRANCHES_OPTIMAL) += -mcompact-branches=optimal +cflags-$(CONFIG_MIPS_COMPACT_BRANCHES_ALWAYS) += -mcompact-branches=always + # # Firmware support # |
