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[Qemu-devel] [PATCH 3/8] tcg: Optimize initial inputs for ori_i64
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PATCH 3/8] tcg: Optimize initial inputs for ori_i64 |
Date: |
Fri, 21 Sep 2012 17:18:11 -0700 |
Copy the same optimizations from ori_i32.
Signed-off-by: Richard Henderson <address@hidden>
---
tcg/tcg-op.h | 19 +++++++++++++------
1 file changed, 13 insertions(+), 6 deletions(-)
diff --git a/tcg/tcg-op.h b/tcg/tcg-op.h
index c8633ff..fd16499 100644
--- a/tcg/tcg-op.h
+++ b/tcg/tcg-op.h
@@ -559,9 +559,9 @@ static inline void tcg_gen_or_i32(TCGv_i32 ret, TCGv_i32
arg1, TCGv_i32 arg2)
static inline void tcg_gen_ori_i32(TCGv_i32 ret, TCGv_i32 arg1, int32_t arg2)
{
- /* some cases can be optimized here */
- if (arg2 == 0xffffffff) {
- tcg_gen_movi_i32(ret, 0xffffffff);
+ /* Some cases can be optimized here. */
+ if (arg2 == -1) {
+ tcg_gen_movi_i32(ret, -1);
} else if (arg2 == 0) {
tcg_gen_mov_i32(ret, arg1);
} else {
@@ -1183,9 +1183,16 @@ static inline void tcg_gen_or_i64(TCGv_i64 ret, TCGv_i64
arg1, TCGv_i64 arg2)
static inline void tcg_gen_ori_i64(TCGv_i64 ret, TCGv_i64 arg1, int64_t arg2)
{
- TCGv_i64 t0 = tcg_const_i64(arg2);
- tcg_gen_or_i64(ret, arg1, t0);
- tcg_temp_free_i64(t0);
+ /* Some cases can be optimized here. */
+ if (arg2 == -1) {
+ tcg_gen_movi_i64(ret, -1);
+ } else if (arg2 == 0) {
+ tcg_gen_mov_i64(ret, arg1);
+ } else {
+ TCGv_i64 t0 = tcg_const_i64(arg2);
+ tcg_gen_or_i64(ret, arg1, t0);
+ tcg_temp_free_i64(t0);
+ }
}
static inline void tcg_gen_xor_i64(TCGv_i64 ret, TCGv_i64 arg1, TCGv_i64 arg2)
--
1.7.11.4
- [Qemu-devel] [PATCH 0/8] Misc tcg improvements, Richard Henderson, 2012/09/21
- [Qemu-devel] [PATCH 1/8] tcg: Adjust descriptions of *cond opcodes, Richard Henderson, 2012/09/21
- [Qemu-devel] [PATCH 2/8] tcg: Emit ANDI as EXTU for appropriate constants, Richard Henderson, 2012/09/21
- [Qemu-devel] [PATCH 3/8] tcg: Optimize initial inputs for ori_i64,
Richard Henderson <=
- [Qemu-devel] [PATCH 4/8] tcg: Emit XORI as NOT for appropriate constants, Richard Henderson, 2012/09/21
- [Qemu-devel] [PATCH 5/8] tcg: Implement concat*_i64 with deposit_i64, Richard Henderson, 2012/09/21
- [Qemu-devel] [PATCH 6/8] tcg: Add tcg_debug_assert, Richard Henderson, 2012/09/21
- [Qemu-devel] [PATCH 7/8] tcg: Sanity check deposit inputs, Richard Henderson, 2012/09/21