[PATCH, i386]: FIx PR85903]: FAIL: gcc.target/i386/avx512dq-vcvtuqq2pd-2.c
Uros Bizjak
ubizjak@gmail.com
Thu May 24 18:20:00 GMT 2018
Hello!
my recent patch exposed a problem in movdi_to_sse pattern, where
post-reload splitter tries to generate a pseudo, which is in fact not
needed.
2018-05-24 Uros Bizjak <ubizjak@gmail.com>
PR target/85903
* config/i386/sse.md (movdi_to_sse): Do not generate pseudo
when memory input operand is handled.
Bootstrapped and regression tested on x86_64-linux-gnu {,-m32}.
Committed to mainline SVN, will be backported to release branches.
Uros.
-------------- next part --------------
diff --git a/gcc/config/i386/sse.md b/gcc/config/i386/sse.md
index 8a80fa35067..9750708a80f 100644
--- a/gcc/config/i386/sse.md
+++ b/gcc/config/i386/sse.md
@@ -1248,11 +1248,8 @@
operands[2]));
}
else if (memory_operand (operands[1], DImode))
- {
- rtx tmp = gen_reg_rtx (V2DImode);
- emit_insn (gen_vec_concatv2di (tmp, operands[1], const0_rtx));
- emit_move_insn (operands[0], gen_lowpart (V4SImode, tmp));
- }
+ emit_insn (gen_vec_concatv2di (gen_lowpart (V2DImode, operands[0]),
+ operands[1], const0_rtx));
else
gcc_unreachable ();
DONE;
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