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[Qemu-devel] [PULL 04/15] tcg: Use extract2 in tcg_gen_deposit_{i32, i64
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PULL 04/15] tcg: Use extract2 in tcg_gen_deposit_{i32, i64} |
Date: |
Fri, 26 Apr 2019 10:24:10 -0700 |
Signed-off-by: Richard Henderson <address@hidden>
---
tcg/tcg-op.c | 34 ++++++++++++++++++++++++++++++----
1 file changed, 30 insertions(+), 4 deletions(-)
diff --git a/tcg/tcg-op.c b/tcg/tcg-op.c
index fbc70649dd..a00d1df37e 100644
--- a/tcg/tcg-op.c
+++ b/tcg/tcg-op.c
@@ -611,9 +611,22 @@ void tcg_gen_deposit_i32(TCGv_i32 ret, TCGv_i32 arg1,
TCGv_i32 arg2,
return;
}
- 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;
+ }
+ }
+
+ mask = (1u << len) - 1;
if (ofs + len < 32) {
tcg_gen_andi_i32(t1, arg2, mask);
tcg_gen_shli_i32(t1, t1, ofs);
@@ -622,7 +635,7 @@ 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);
}
@@ -2024,9 +2037,22 @@ 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;
+ }
+ }
+
+ mask = (1ull << len) - 1;
if (ofs + len < 64) {
tcg_gen_andi_i64(t1, arg2, mask);
tcg_gen_shli_i64(t1, t1, ofs);
@@ -2035,7 +2061,7 @@ 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);
}
--
2.17.1
- [Qemu-devel] [PULL 00/15] tcg patch queue, Richard Henderson, 2019/04/26
- [Qemu-devel] [PULL 01/15] tcg: Implement tcg_gen_extract2_{i32, i64}, Richard Henderson, 2019/04/26
- [Qemu-devel] [PULL 03/15] tcg: Use deposit and extract2 in tcg_gen_shifti_i64, Richard Henderson, 2019/04/26
- [Qemu-devel] [PULL 04/15] tcg: Use extract2 in tcg_gen_deposit_{i32, i64},
Richard Henderson <=
- [Qemu-devel] [PULL 05/15] tcg/i386: Support INDEX_op_extract2_{i32, i64}, Richard Henderson, 2019/04/26
- [Qemu-devel] [PULL 02/15] tcg: Add INDEX_op_extract2_{i32,i64}, Richard Henderson, 2019/04/26
- [Qemu-devel] [PULL 06/15] tcg/arm: Support INDEX_op_extract2_i32, Richard Henderson, 2019/04/26
- [Qemu-devel] [PULL 07/15] tcg/aarch64: Support INDEX_op_extract2_{i32, i64}, Richard Henderson, 2019/04/26
- [Qemu-devel] [PULL 09/15] tcg: Restart after TB code generation overflow, Richard Henderson, 2019/04/26
- [Qemu-devel] [PULL 08/15] tcg: Hoist max_insns computation to tb_gen_code, Richard Henderson, 2019/04/26
- [Qemu-devel] [PULL 11/15] tcg: Restart TB generation after constant pool overflow, Richard Henderson, 2019/04/26
- [Qemu-devel] [PULL 10/15] tcg: Restart TB generation after relocation overflow, Richard Henderson, 2019/04/26
- [Qemu-devel] [PULL 12/15] tcg: Restart TB generation after out-of-line ldst overflow, Richard Henderson, 2019/04/26
- [Qemu-devel] [PULL 13/15] tcg/ppc: Allow the constant pool to overflow at 32k, Richard Henderson, 2019/04/26