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| author | Richard Henderson <richard.henderson@linaro.org> | 2018-10-30 21:52:44 +0000 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2018-12-17 06:04:43 +0300 |
| commit | 5740d9f714835964873325d1210b26811252843f (patch) | |
| tree | 04038bcc6a91222e3b971539c1a5add901b66336 | |
| parent | f6823cbe3787aa47db62deede6683077e3da9a2c (diff) | |
| download | qemu-5740d9f714835964873325d1210b26811252843f.zip qemu-5740d9f714835964873325d1210b26811252843f.tar.gz qemu-5740d9f714835964873325d1210b26811252843f.tar.bz2 | |
tcg/i386: Always use %ebp for TCG_AREG0
For x86_64, this can remove a REX prefix resulting in smaller code
when manipulating globals of type i32, as we move them between backing
store via cpu_env, aka TCG_AREG0.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
| -rw-r--r-- | tcg/i386/tcg-target.h | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/tcg/i386/tcg-target.h b/tcg/i386/tcg-target.h index 9fdf37f..7488c3d 100644 --- a/tcg/i386/tcg-target.h +++ b/tcg/i386/tcg-target.h @@ -84,6 +84,8 @@ typedef enum { TCG_REG_RBP = TCG_REG_EBP, TCG_REG_RSI = TCG_REG_ESI, TCG_REG_RDI = TCG_REG_EDI, + + TCG_AREG0 = TCG_REG_EBP, } TCGReg; /* used for function call generation */ @@ -194,12 +196,6 @@ extern bool have_avx2; #define TCG_TARGET_extract_i64_valid(ofs, len) \ (((ofs) == 8 && (len) == 8) || ((ofs) + (len)) == 32) -#if TCG_TARGET_REG_BITS == 64 -# define TCG_AREG0 TCG_REG_R14 -#else -# define TCG_AREG0 TCG_REG_EBP -#endif - static inline void flush_icache_range(uintptr_t start, uintptr_t stop) { } |