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[Qemu-devel] [PATCH for-1.5 2/2] tcg-arm: Use movi32 in exit_tb
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PATCH for-1.5 2/2] tcg-arm: Use movi32 in exit_tb |
Date: |
Mon, 29 Apr 2013 08:08:23 -0700 |
Avoid the mini constant pool for armv7, and avoid replicating
the test for pre-v7.
Signed-off-by: Richard Henderson <address@hidden>
---
tcg/arm/tcg-target.c | 16 +++++++---------
1 file changed, 7 insertions(+), 9 deletions(-)
diff --git a/tcg/arm/tcg-target.c b/tcg/arm/tcg-target.c
index 12edad4..3d43412 100644
--- a/tcg/arm/tcg-target.c
+++ b/tcg/arm/tcg-target.c
@@ -1611,17 +1611,15 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode
opc,
switch (opc) {
case INDEX_op_exit_tb:
- {
+ if (use_armv7_instructions || check_fit_imm(args[0])) {
+ tcg_out_movi32(s, COND_AL, TCG_REG_R0, args[0]);
+ tcg_out_goto(s, COND_AL, (tcg_target_ulong) tb_ret_addr);
+ } else {
uint8_t *ld_ptr = s->code_ptr;
- if (args[0] >> 8)
- tcg_out_ld32_12(s, COND_AL, TCG_REG_R0, TCG_REG_PC, 0);
- else
- tcg_out_dat_imm(s, COND_AL, ARITH_MOV, TCG_REG_R0, 0, args[0]);
+ tcg_out_ld32_12(s, COND_AL, TCG_REG_R0, TCG_REG_PC, 0);
tcg_out_goto(s, COND_AL, (tcg_target_ulong) tb_ret_addr);
- if (args[0] >> 8) {
- *ld_ptr = (uint8_t) (s->code_ptr - ld_ptr) - 8;
- tcg_out32(s, args[0]);
- }
+ *ld_ptr = (uint8_t) (s->code_ptr - ld_ptr) - 8;
+ tcg_out32(s, args[0]);
}
break;
case INDEX_op_goto_tb:
--
1.8.1.4