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Don't check zero/sign extended hard registers. 

2011-06-20  H.J. Lu  <hongjiu.lu@intel.com>

	PR middle-end/47725
	* combine.c (cant_combine_insn_p): Don't check zero/sign
	extended hard registers.

From-SVN: r175222
This commit is contained in:
H.J. Lu 2011-06-20 17:03:16 +00:00 committed by H.J. Lu
parent 3a76978496
commit 83a8cbdab0
2 changed files with 6 additions and 6 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2011-06-20 H.J. Lu <hongjiu.lu@intel.com>
PR middle-end/47725
* combine.c (cant_combine_insn_p): Don't check zero/sign
extended hard registers.
2011-06-21 Alan Modra <amodra@gmail.com>
* config/rs6000/rs6000.c (rs6000_cannot_force_const_mem): Match

6
gcc/combine.c
View File

@ -2168,12 +2168,6 @@ cant_combine_insn_p (rtx insn)
return 0;
src = SET_SRC (set);
dest = SET_DEST (set);
if (GET_CODE (src) == ZERO_EXTEND
|| GET_CODE (src) == SIGN_EXTEND)
src = XEXP (src, 0);
if (GET_CODE (dest) == ZERO_EXTEND
|| GET_CODE (dest) == SIGN_EXTEND)
dest = XEXP (dest, 0);
if (GET_CODE (src) == SUBREG)
src = SUBREG_REG (src);
if (GET_CODE (dest) == SUBREG)