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[PATCH v3 11/16] tcg/mips: Split out tcg_out_movi_one
From: |
Richard Henderson |
Subject: |
[PATCH v3 11/16] tcg/mips: Split out tcg_out_movi_one |
Date: |
Wed, 18 Aug 2021 10:19:26 -1000 |
Emit all constants that can be loaded in exactly one insn.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/mips/tcg-target.c.inc | 26 ++++++++++++++++++++------
1 file changed, 20 insertions(+), 6 deletions(-)
diff --git a/tcg/mips/tcg-target.c.inc b/tcg/mips/tcg-target.c.inc
index 333b9572d0..b32edd5a7a 100644
--- a/tcg/mips/tcg-target.c.inc
+++ b/tcg/mips/tcg-target.c.inc
@@ -524,20 +524,34 @@ static bool tcg_out_mov(TCGContext *s, TCGType type,
TCGReg ret, TCGReg arg)
return true;
}
+static bool tcg_out_movi_one(TCGContext *s, TCGReg ret, tcg_target_long arg)
+{
+ if (arg == (int16_t)arg) {
+ tcg_out_opc_imm(s, OPC_ADDIU, ret, TCG_REG_ZERO, arg);
+ return true;
+ }
+ if (arg == (uint16_t)arg) {
+ tcg_out_opc_imm(s, OPC_ORI, ret, TCG_REG_ZERO, arg);
+ return true;
+ }
+ if (arg == (int32_t)arg && (arg & 0xffff) == 0) {
+ tcg_out_opc_imm(s, OPC_LUI, ret, TCG_REG_ZERO, arg >> 16);
+ return true;
+ }
+ return false;
+}
+
static void tcg_out_movi(TCGContext *s, TCGType type,
TCGReg ret, tcg_target_long arg)
{
if (TCG_TARGET_REG_BITS == 64 && type == TCG_TYPE_I32) {
arg = (int32_t)arg;
}
- if (arg == (int16_t)arg) {
- tcg_out_opc_imm(s, OPC_ADDIU, ret, TCG_REG_ZERO, arg);
- return;
- }
- if (arg == (uint16_t)arg) {
- tcg_out_opc_imm(s, OPC_ORI, ret, TCG_REG_ZERO, arg);
+
+ if (tcg_out_movi_one(s, ret, arg)) {
return;
}
+
if (TCG_TARGET_REG_BITS == 32 || arg == (int32_t)arg) {
tcg_out_opc_imm(s, OPC_LUI, ret, TCG_REG_ZERO, arg >> 16);
} else {
--
2.25.1
- [PATCH v3 01/16] tcg/mips: Support unaligned access for user-only, (continued)
- [PATCH v3 01/16] tcg/mips: Support unaligned access for user-only, Richard Henderson, 2021/08/18
- [PATCH v3 02/16] tcg/mips: Support unaligned access for softmmu, Richard Henderson, 2021/08/18
- [PATCH v3 06/16] tcg/mips: Unify TCG_GUEST_BASE_REG tests, Richard Henderson, 2021/08/18
- [PATCH v3 08/16] tcg/mips: Unset TCG_TARGET_HAS_direct_jump, Richard Henderson, 2021/08/18
- [PATCH v3 04/16] tcg/mips: Move TCG_AREG0 to S8, Richard Henderson, 2021/08/18
- [PATCH v3 07/16] tcg/mips: Allow JAL to be out of range in tcg_out_bswap_subr, Richard Henderson, 2021/08/18
- [PATCH v3 05/16] tcg/mips: Move TCG_GUEST_BASE_REG to S7, Richard Henderson, 2021/08/18
- [PATCH v3 11/16] tcg/mips: Split out tcg_out_movi_one,
Richard Henderson <=
- [PATCH v3 03/16] tcg/mips: Drop inline markers, Richard Henderson, 2021/08/18
- [PATCH v3 09/16] tcg/mips: Drop special alignment for code_gen_buffer, Richard Henderson, 2021/08/18
- [PATCH v3 10/16] tcg/mips: Create and use TCG_REG_TB, Richard Henderson, 2021/08/18
- [PATCH v3 15/16] tcg/mips: Try tb-relative addresses in tcg_out_movi, Richard Henderson, 2021/08/18
- [PATCH v3 12/16] tcg/mips: Split out tcg_out_movi_two, Richard Henderson, 2021/08/18
- [PATCH v3 14/16] tcg/mips: Aggressively use the constant pool for n64 calls, Richard Henderson, 2021/08/18
- [PATCH v3 13/16] tcg/mips: Use the constant pool for 64-bit constants, Richard Henderson, 2021/08/18
- [PATCH v3 16/16] tcg/mips: Try three insns with shift and add in tcg_out_movi, Richard Henderson, 2021/08/18