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authorRichard Henderson <rth@twiddle.net>2013-03-13 13:40:43 -0700
committerAurelien Jarno <aurelien@aurel32.net>2013-04-27 02:16:45 +0200
commit302fdde73f88fd958acfa18b670eed092eab21a0 (patch)
tree47410ab7519dc0578a7b71f19653a46b957445d1
parent595b5397cc589d694ec3af660b21f483e8142f69 (diff)
tcg-arm: Use movi32 + blx for calls on v7
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. Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
-rw-r--r--tcg/arm/tcg-target.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/tcg/arm/tcg-target.c b/tcg/arm/tcg-target.c
index 5fa3cb1258..eb697f2942 100644
--- a/tcg/arm/tcg-target.c
+++ b/tcg/arm/tcg-target.c
@@ -1016,6 +1016,9 @@ 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);