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[Qemu-devel] [PATCH v3 19/20] tcg-arm: Use movi32 + blx for calls on v7
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PATCH v3 19/20] tcg-arm: Use movi32 + blx for calls on v7 |
Date: |
Thu, 28 Mar 2013 08:33:00 -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 3949623..148fd6f 100644
--- a/tcg/arm/tcg-target.c
+++ b/tcg/arm/tcg-target.c
@@ -988,6 +988,9 @@ 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 v3 14/20] tcg-arm: Cleanup goto_tb handling, (continued)
- [Qemu-devel] [PATCH v3 14/20] tcg-arm: Cleanup goto_tb handling, Richard Henderson, 2013/03/28
- [Qemu-devel] [PATCH v3 15/20] tcg-arm: Cleanup most primitive load store subroutines, Richard Henderson, 2013/03/28
- [Qemu-devel] [PATCH v3 16/20] tcg-arm: Fix local stack frame, Richard Henderson, 2013/03/28
- [Qemu-devel] [PATCH v3 17/20] tcg-arm: Split out tcg_out_tlb_read, Richard Henderson, 2013/03/28
- [Qemu-devel] [PATCH v3 18/20] tcg-arm: Improve scheduling of tcg_out_tlb_read, Richard Henderson, 2013/03/28
- [Qemu-devel] [PATCH v3 20/20] tcg-arm: Convert to CONFIG_QEMU_LDST_OPTIMIZATION, Richard Henderson, 2013/03/28
- [Qemu-devel] [PATCH v3 19/20] tcg-arm: Use movi32 + blx for calls on v7,
Richard Henderson <=