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[Qemu-devel] [PULL 01/32] tcg/i386: Always use %ebp for TCG_AREG0
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PULL 01/32] tcg/i386: Always use %ebp for TCG_AREG0 |
Date: |
Thu, 13 Dec 2018 21:18:52 -0600 |
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 <address@hidden>
Reviewed-by: Emilio G. Cota <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
---
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
- [Qemu-devel] [PULL 00/32] tcg patch queue, Richard Henderson, 2018/12/13
- [Qemu-devel] [PULL 02/32] tcg/i386: Move TCG_REG_CALL_STACK from define to enum, Richard Henderson, 2018/12/13
- [Qemu-devel] [PATCH] fixup! target/arm: Move id_aa64mmfr* to ARMISARegisters, Richard Henderson, 2018/12/13
- [Qemu-devel] [PULL 01/32] tcg/i386: Always use %ebp for TCG_AREG0,
Richard Henderson <=
- [Qemu-devel] [PULL 03/32] tcg/aarch64: Remove reloc_pc26_atomic, Richard Henderson, 2018/12/13
- [Qemu-devel] [PULL 05/32] tcg/arm: Remove reloc_pc24_atomic, Richard Henderson, 2018/12/13
- [Qemu-devel] [PULL 04/32] tcg/aarch64: Fold away "noaddr" branch routines, Richard Henderson, 2018/12/13
- [Qemu-devel] [PULL 06/32] tcg/arm: Fold away "noaddr" branch routines, Richard Henderson, 2018/12/13
- [Qemu-devel] [PULL 07/32] tcg/ppc: Fold away "noaddr" branch routines, Richard Henderson, 2018/12/13
- [Qemu-devel] [PULL 08/32] tcg/s390: Remove retranslation code, Richard Henderson, 2018/12/13
- [Qemu-devel] [PULL 10/32] tcg/mips: Remove retranslation code, Richard Henderson, 2018/12/13
- [Qemu-devel] [PULL 09/32] tcg/sparc: Remove retranslation code, Richard Henderson, 2018/12/13
- [Qemu-devel] [PULL 12/32] tcg/i386: Return false on failure from patch_reloc, Richard Henderson, 2018/12/13
- [Qemu-devel] [PULL 11/32] tcg: Return success from patch_reloc, Richard Henderson, 2018/12/13