On 8/4/23 05:03, Richard Henderson wrote:
Emit all constants that can be loaded in exactly one insn.
Signed-off-by: Richard Henderson <richard.hender...@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 c2f8d6550b..f0ae418ba6 100644
--- a/tcg/mips/tcg-target.c.inc
+++ b/tcg/mips/tcg-target.c.inc
@@ -514,20 +514,34 @@ 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);
Shouldn't this block be removed in this patch?
} else {
