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[Qemu-devel] [PATCH 4/9] tcg: Use extract2 in tcg_gen_deposit_{i32, i64}
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PATCH 4/9] tcg: Use extract2 in tcg_gen_deposit_{i32, i64} |
Date: |
Thu, 7 Mar 2019 06:41:21 -0800 |
Signed-off-by: Richard Henderson <address@hidden>
---
tcg/tcg-op.c | 28 ++++++++++++++++++++++++++--
1 file changed, 26 insertions(+), 2 deletions(-)
diff --git a/tcg/tcg-op.c b/tcg/tcg-op.c
index 34e0dbc6e0..caee80235e 100644
--- a/tcg/tcg-op.c
+++ b/tcg/tcg-op.c
@@ -614,6 +614,18 @@ void tcg_gen_deposit_i32(TCGv_i32 ret, TCGv_i32 arg1,
TCGv_i32 arg2,
mask = (1u << len) - 1;
t1 = tcg_temp_new_i32();
+ if (TCG_TARGET_HAS_extract2_i32) {
+ if (ofs + len == 32) {
+ tcg_gen_shli_i32(t1, arg1, len);
+ tcg_gen_extract2_i32(ret, t1, arg2, len);
+ goto done;
+ }
+ if (ofs == 0) {
+ tcg_gen_extract2_i32(ret, arg1, arg2, len);
+ tcg_gen_rotli_i32(ret, ret, len);
+ goto done;
+ }
+ }
if (ofs + len < 32) {
tcg_gen_andi_i32(t1, arg2, mask);
tcg_gen_shli_i32(t1, t1, ofs);
@@ -622,7 +634,7 @@ void tcg_gen_deposit_i32(TCGv_i32 ret, TCGv_i32 arg1,
TCGv_i32 arg2,
}
tcg_gen_andi_i32(ret, arg1, ~(mask << ofs));
tcg_gen_or_i32(ret, ret, t1);
-
+ done:
tcg_temp_free_i32(t1);
}
@@ -2027,6 +2039,18 @@ void tcg_gen_deposit_i64(TCGv_i64 ret, TCGv_i64 arg1,
TCGv_i64 arg2,
mask = (1ull << len) - 1;
t1 = tcg_temp_new_i64();
+ if (TCG_TARGET_HAS_extract2_i64) {
+ if (ofs + len == 64) {
+ tcg_gen_shli_i64(t1, arg1, len);
+ tcg_gen_extract2_i64(ret, t1, arg2, len);
+ goto done;
+ }
+ if (ofs == 0) {
+ tcg_gen_extract2_i64(ret, arg1, arg2, len);
+ tcg_gen_rotli_i64(ret, ret, len);
+ goto done;
+ }
+ }
if (ofs + len < 64) {
tcg_gen_andi_i64(t1, arg2, mask);
tcg_gen_shli_i64(t1, t1, ofs);
@@ -2035,7 +2059,7 @@ void tcg_gen_deposit_i64(TCGv_i64 ret, TCGv_i64 arg1,
TCGv_i64 arg2,
}
tcg_gen_andi_i64(ret, arg1, ~(mask << ofs));
tcg_gen_or_i64(ret, ret, t1);
-
+ done:
tcg_temp_free_i64(t1);
}
--
2.17.2
- [Qemu-devel] [PATCH 0/9] tcg: Add tcg_gen_extract2_{i32,i64}, Richard Henderson, 2019/03/07
- [Qemu-devel] [PATCH 1/9] tcg: Implement tcg_gen_extract2_{i32, i64}, Richard Henderson, 2019/03/07
- [Qemu-devel] [PATCH 3/9] tcg: Use extract2 in tcg_gen_shifti_i64, Richard Henderson, 2019/03/07
- [Qemu-devel] [PATCH 4/9] tcg: Use extract2 in tcg_gen_deposit_{i32, i64},
Richard Henderson <=
- [Qemu-devel] [PATCH 2/9] tcg: Add INDEX_op_extract2_{i32,i64}, Richard Henderson, 2019/03/07
- [Qemu-devel] [PATCH 5/9] tcg/i386: Support INDEX_op_extract2_{i32, i64}, Richard Henderson, 2019/03/07
- [Qemu-devel] [PATCH 6/9] tcg/arm: Support INDEX_op_extract2_i32, Richard Henderson, 2019/03/07