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cse.c (cse_insn): Fix thinko in the canonicalization of USE insns.

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* cse.c (cse_insn): Fix thinko in the canonicalization of USE insns.
	Canonicalize input operands of ASM_OPERANDS insns.

From-SVN: r165429
This commit is contained in:
Eric Botcazou 2010-10-13 18:18:36 +00:00 committed by Eric Botcazou
parent 879b9073c8
commit b1ba284ce3
2 changed files with 18 additions and 2 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2010-10-13 Eric Botcazou <ebotcazou@adacore.com>
* cse.c (cse_insn): Fix thinko in the canonicalization of USE insns.
Canonicalize input operands of ASM_OPERANDS insns.
2010-10-13 Richard Guenther <rguenther@suse.de>
PR tree-optimization/45788

15
gcc/cse.c
View File

@ -4338,12 +4338,23 @@ cse_insn (rtx insn)
if (MEM_P (XEXP (x, 0)))
canon_reg (XEXP (x, 0), insn);
}
/* Canonicalize a USE of a pseudo register or memory location. */
else if (GET_CODE (x) == USE
&& ! (REG_P (XEXP (x, 0))
&& REGNO (XEXP (x, 0)) < FIRST_PSEUDO_REGISTER))
canon_reg (XEXP (x, 0), insn);
canon_reg (x, insn);
else if (GET_CODE (x) == ASM_OPERANDS)
{
for (i = ASM_OPERANDS_INPUT_LENGTH (x) - 1; i >= 0; i--)
{
rtx input = ASM_OPERANDS_INPUT (x, i);
if (!(REG_P (input) && REGNO (input) < FIRST_PSEUDO_REGISTER))
{
input = canon_reg (input, insn);
validate_change (insn, &ASM_OPERANDS_INPUT (x, i), input, 1);
}
}
}
else if (GET_CODE (x) == CALL)
{
/* The result of apply_change_group can be ignored; see canon_reg. */