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(modsi3): Move test of exact_log2 into extra condition. 

From-SVN: r6205
This commit is contained in:
Richard Kenner 1993-12-11 07:05:02 -05:00
parent 7df83bcec6
commit 8b4a434166
1 changed files with 3 additions and 6 deletions
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9
gcc/config/rs6000/rs6000.md
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@ -765,18 +765,15 @@
[(use (match_operand:SI 0 "gpc_reg_operand" ""))
(use (match_operand:SI 1 "gpc_reg_operand" ""))
(use (match_operand:SI 2 "const_int_operand" ""))]
""
"exact_log2 (INTVAL (operands[2])) >= 0"
"
{
int i = exact_log2 (INTVAL (operands[2]));
rtx temp1 = gen_reg_rtx (SImode);
rtx temp2 = gen_reg_rtx (SImode);
if (i < 0)
FAIL;
emit_insn (gen_divsi3 (temp1, operands[1], operands[2]));
emit_insn (gen_ashlsi3 (temp2, temp1, GEN_INT (i)));
emit_insn (gen_ashlsi3 (temp2, temp1,
GEN_INT (exact_log2 (INTVAL (operands[2])))));
emit_insn (gen_subsi3 (operands[0], operands[1], temp2));
DONE;