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authorRichard Henderson <rth@twiddle.net>2014-08-06 12:11:25 -0700
committerRichard Henderson <rth@redhat.com>2014-09-29 14:55:27 -0400
commit9d6a7a8542b17f5a98a60268d1c185bc81edb1a7 (patch)
tree249f750bd522f3885b68837dfdeab74937f44ed4 /tcg
parent321b6c058544c136341bf9cc6055f127f307f03e (diff)
tcg-sparc: Use ADDXC in setcond_i64
Similar to the ADDC tricks we use in setcond_i32. Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'tcg')
-rw-r--r--tcg/sparc/tcg-target.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/tcg/sparc/tcg-target.c b/tcg/sparc/tcg-target.c
index 3b232d6333..d0bd08cb85 100644
--- a/tcg/sparc/tcg-target.c
+++ b/tcg/sparc/tcg-target.c
@@ -716,6 +716,23 @@ static void tcg_out_setcond_i32(TCGContext *s, TCGCond cond, TCGReg ret,
static void tcg_out_setcond_i64(TCGContext *s, TCGCond cond, TCGReg ret,
TCGReg c1, int32_t c2, int c2const)
{
+ if (use_vis3_instructions) {
+ switch (cond) {
+ case TCG_COND_NE:
+ if (c2 != 0) {
+ break;
+ }
+ c2 = c1, c2const = 0, c1 = TCG_REG_G0;
+ /* FALLTHRU */
+ case TCG_COND_LTU:
+ tcg_out_cmp(s, c1, c2, c2const);
+ tcg_out_arith(s, ret, TCG_REG_G0, TCG_REG_G0, ARITH_ADDXC);
+ return;
+ default:
+ break;
+ }
+ }
+
/* For 64-bit signed comparisons vs zero, we can avoid the compare
if the input does not overlap the output. */
if (c2 == 0 && !is_unsigned_cond(cond) && c1 != ret) {