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| author | H.J. Lu <hongjiu.lu@intel.com> | 2011-06-20 14:53:48 +0000 |
|---|---|---|
| committer | H.J. Lu <hjl@gcc.gnu.org> | 2011-06-20 07:53:48 -0700 |
| commit | d1e32c4a411c4a216b7d80e56da2b8a73197505e (patch) | |
| tree | 50bddf0089eeec9e64b85925a09e2f1a635b73ca | |
| parent | b028af11640a2a31c267b73cc40a9b162632a7d0 (diff) | |
| download | gcc-d1e32c4a411c4a216b7d80e56da2b8a73197505e.zip gcc-d1e32c4a411c4a216b7d80e56da2b8a73197505e.tar.gz gcc-d1e32c4a411c4a216b7d80e56da2b8a73197505e.tar.bz2 | |
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): Check zero/sign extended
hard registers.
From-SVN: r175218
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/combine.c | 6 |
2 files changed, 12 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index aa9449b..a4b5faf 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2011-06-20 H.J. Lu <hongjiu.lu@intel.com> + + PR middle-end/47725 + * combine.c (cant_combine_insn_p): Check zero/sign extended + hard registers. + 2011-06-20 Ramana Radhakrishnan <ramana.radhakrishnan@linaro.org> PR target/49385 diff --git a/gcc/combine.c b/gcc/combine.c index 56fb44e..004ae27 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -2168,6 +2168,12 @@ 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) |