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.ben...@linaro.org> Reviewed-by: Emilio G. Cota <c...@braap.org> Signed-off-by: Richard Henderson <richard.hender...@linaro.org> --- tcg/i386/tcg-target.h | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/tcg/i386/tcg-target.h b/tcg/i386/tcg-target.h index 9fdf37f23c..7488c3d869 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) { } -- 2.17.2