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[Qemu-devel] [PATCH v4 16/18] tcg-arm: Use movi32 + blx for calls on v7
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PATCH v4 16/18] tcg-arm: Use movi32 + blx for calls on v7 |
Date: |
Sat, 30 Mar 2013 13:43:25 -0700 |
Work better with branch predition when we have movw+movt,
as the size of the code is the same. Perhaps re-evaluate
when we have a proper constant pool.
Signed-off-by: Richard Henderson <address@hidden>
---
tcg/arm/tcg-target.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/tcg/arm/tcg-target.c b/tcg/arm/tcg-target.c
index 7962136..7791314 100644
--- a/tcg/arm/tcg-target.c
+++ b/tcg/arm/tcg-target.c
@@ -1019,6 +1019,9 @@ static inline void tcg_out_call(TCGContext *s, uint32_t
addr)
} else {
tcg_out_bl(s, COND_AL, val);
}
+ } else if (use_armv7_instructions) {
+ tcg_out_movi32(s, COND_AL, TCG_REG_TMP, addr);
+ tcg_out_blx(s, COND_AL, TCG_REG_TMP);
} else {
tcg_out_dat_imm(s, COND_AL, ARITH_ADD, TCG_REG_R14, TCG_REG_PC, 4);
tcg_out_ld32_12(s, COND_AL, TCG_REG_PC, TCG_REG_PC, -4);
--
1.8.1.4
- [Qemu-devel] [PATCH v4 06/18] tcg-arm: Handle constant arguments to add2/sub2, (continued)
- [Qemu-devel] [PATCH v4 06/18] tcg-arm: Handle constant arguments to add2/sub2, Richard Henderson, 2013/03/30
- [Qemu-devel] [PATCH v4 07/18] tcg-arm: Improve constant generation, Richard Henderson, 2013/03/30
- [Qemu-devel] [PATCH v4 08/18] tcg-arm: Implement deposit for armv7, Richard Henderson, 2013/03/30
- [Qemu-devel] [PATCH v4 09/18] tcg-arm: Implement division instructions, Richard Henderson, 2013/03/30
- [Qemu-devel] [PATCH v4 10/18] tcg-arm: Use TCG_REG_TMP name for the tcg temporary, Richard Henderson, 2013/03/30
- [Qemu-devel] [PATCH v4 11/18] tcg-arm: Use R12 for the tcg temporary, Richard Henderson, 2013/03/30
- [Qemu-devel] [PATCH v4 12/18] tcg-arm: Cleanup multiply subroutines, Richard Henderson, 2013/03/30
- [Qemu-devel] [PATCH v4 13/18] tcg-arm: Cleanup most primitive load store subroutines, Richard Henderson, 2013/03/30
- [Qemu-devel] [PATCH v4 14/18] tcg-arm: Split out tcg_out_tlb_read, Richard Henderson, 2013/03/30
- [Qemu-devel] [PATCH v4 15/18] tcg-arm: Improve scheduling of tcg_out_tlb_read, Richard Henderson, 2013/03/30
- [Qemu-devel] [PATCH v4 16/18] tcg-arm: Use movi32 + blx for calls on v7,
Richard Henderson <=
- [Qemu-devel] [PATCH v4 18/18] tcg-arm: Tidy exit_tb, Richard Henderson, 2013/03/30
- [Qemu-devel] [PATCH v4 17/18] tcg-arm: Convert to CONFIG_QEMU_LDST_OPTIMIZATION, Richard Henderson, 2013/03/30