Hi,
This patch adds the support for the crc extension option to the aarch64
gcc driver.
OK for the trunk?
Thanks,
Yufeng
gcc/
* config/aarch64/aarch64-option-extensions.def: Add
AARCH64_OPT_EXTENSION of 'crc'.
* config/aarch64/aarch64.h (AARCH64_FL_CRC): New define.
(AARCH64_ISA_CRC): Ditto.
* doc/invoke.texi (-march and -mcpu feature modifiers): Add
description of the CRC extension.diff --git a/gcc/config/aarch64/aarch64-option-extensions.def
b/gcc/config/aarch64/aarch64-option-extensions.def
index 58e8154..371e74c 100644
--- a/gcc/config/aarch64/aarch64-option-extensions.def
+++ b/gcc/config/aarch64/aarch64-option-extensions.def
@@ -35,3 +35,4 @@
AARCH64_OPT_EXTENSION("fp", AARCH64_FL_FP, AARCH64_FL_FPSIMD |
AARCH64_FL_CRYPTO)
AARCH64_OPT_EXTENSION("simd", AARCH64_FL_FPSIMD, AARCH64_FL_SIMD |
AARCH64_FL_CRYPTO)
AARCH64_OPT_EXTENSION("crypto", AARCH64_FL_CRYPTO | AARCH64_FL_FPSIMD,
AARCH64_FL_CRYPTO)
+AARCH64_OPT_EXTENSION("crc", AARCH64_FL_CRC, AARCH64_FL_CRC)
diff --git a/gcc/config/aarch64/aarch64.h b/gcc/config/aarch64/aarch64.h
index 0924269..d8012f8 100644
--- a/gcc/config/aarch64/aarch64.h
+++ b/gcc/config/aarch64/aarch64.h
@@ -158,6 +158,7 @@
#define AARCH64_FL_FP (1 << 1) /* Has FP. */
#define AARCH64_FL_CRYPTO (1 << 2) /* Has crypto. */
#define AARCH64_FL_SLOWMUL (1 << 3) /* A slow multiply core. */
+#define AARCH64_FL_CRC (1 << 4) /* Has CRC. */
/* Has FP and SIMD. */
#define AARCH64_FL_FPSIMD (AARCH64_FL_FP | AARCH64_FL_SIMD)
@@ -170,6 +171,7 @@
/* Macros to test ISA flags. */
extern unsigned long aarch64_isa_flags;
+#define AARCH64_ISA_CRC (aarch64_isa_flags & AARCH64_FL_CRC)
#define AARCH64_ISA_CRYPTO (aarch64_isa_flags & AARCH64_FL_CRYPTO)
#define AARCH64_ISA_FP (aarch64_isa_flags & AARCH64_FL_FP)
#define AARCH64_ISA_SIMD (aarch64_isa_flags & AARCH64_FL_SIMD)
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 14955dd..0843178 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -11138,6 +11138,8 @@ Feature modifiers used with @option{-march} and
@option{-mcpu} can be one
the following:
@table @samp
+@item crc
+Enable CRC extension.
@item crypto
Enable Crypto extension. This implies Advanced SIMD is enabled.
@item fp
