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altivec.md (mulv4si3): Ensure we generate vmulouh for both big and little endian.

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2013-11-05  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	* config/rs6000/altivec.md (mulv4si3): Ensure we generate vmulouh
	for both big and little endian.
	(mulv8hi3): Swap input operands for merge high and merge low
	instructions for little endian.

From-SVN: r204440
This commit is contained in:
Bill Schmidt 2013-11-06 03:29:44 +00:00 committed by William Schmidt
parent 1a5d226128
commit 2b9d047631
2 changed files with 18 additions and 6 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2013-11-05 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
* config/rs6000/altivec.md (mulv4si3): Ensure we generate vmulouh
for both big and little endian.
(mulv8hi3): Swap input operands for merge high and merge low
instructions for little endian.
2013-11-05 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
* config/rs6000/altivec.md (vec_widen_umult_even_v16qi): Change

17
gcc/config/rs6000/altivec.md
View File

@ -651,7 +651,7 @@
convert_move (small_swap, swap, 0);
low_product = gen_reg_rtx (V4SImode);
emit_insn (gen_vec_widen_umult_odd_v8hi (low_product, one, two));
emit_insn (gen_altivec_vmulouh (low_product, one, two));
high_product = gen_reg_rtx (V4SImode);
emit_insn (gen_altivec_vmsumuhm (high_product, one, small_swap, zero));
@ -678,13 +678,18 @@
emit_insn (gen_vec_widen_smult_even_v8hi (even, operands[1], operands[2]));
emit_insn (gen_vec_widen_smult_odd_v8hi (odd, operands[1], operands[2]));
emit_insn (gen_altivec_vmrghw (high, even, odd));
emit_insn (gen_altivec_vmrglw (low, even, odd));
if (BYTES_BIG_ENDIAN)
emit_insn (gen_altivec_vpkuwum (operands[0], high, low));
{
emit_insn (gen_altivec_vmrghw (high, even, odd));
emit_insn (gen_altivec_vmrglw (low, even, odd));
emit_insn (gen_altivec_vpkuwum (operands[0], high, low));
}
else
emit_insn (gen_altivec_vpkuwum (operands[0], low, high));
{
emit_insn (gen_altivec_vmrghw (high, odd, even));
emit_insn (gen_altivec_vmrglw (low, odd, even));
emit_insn (gen_altivec_vpkuwum (operands[0], low, high));
}
DONE;
}")