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| author | H.J. Lu <hongjiu.lu@intel.com> | 2012-04-11 19:31:45 +0000 |
|---|---|---|
| committer | H.J. Lu <hjl@gcc.gnu.org> | 2012-04-11 12:31:45 -0700 |
| commit | de6f3f7ab8d0ffd3a01bd045a90317d8404c9591 (patch) | |
| tree | a22fa5858f537ac51f83ae37d539fb42a9c209ab /gcc/reginfo.c | |
| parent | d3ea1dbdb267abe428d444f586af1fc724556898 (diff) | |
| download | gcc-de6f3f7ab8d0ffd3a01bd045a90317d8404c9591.zip gcc-de6f3f7ab8d0ffd3a01bd045a90317d8404c9591.tar.gz gcc-de6f3f7ab8d0ffd3a01bd045a90317d8404c9591.tar.bz2 | |
Check for incompatible pointer sign extension
gcc/
PR rtl-optimization/52876
* emit-rtl.c (set_reg_attrs_from_value): Handle arbitrary value.
Don't call mark_reg_pointer for incompatible pointer sign
extension.
* reginfo.c (reg_scan_mark_refs): Call set_reg_attrs_from_value
directly.
gcc/testsuite
PR rtl-optimization/52876
* gcc.target/i386/pr52876.c: New.
From-SVN: r186351
Diffstat (limited to 'gcc/reginfo.c')
| -rw-r--r-- | gcc/reginfo.c | 12 |
1 files changed, 1 insertions, 11 deletions
diff --git a/gcc/reginfo.c b/gcc/reginfo.c index 6353126..f3a08f5 100644 --- a/gcc/reginfo.c +++ b/gcc/reginfo.c @@ -1222,17 +1222,7 @@ reg_scan_mark_refs (rtx x, rtx insn) /* If this is setting a register from a register or from a simple conversion of a register, propagate REG_EXPR. */ if (REG_P (dest) && !REG_ATTRS (dest)) - { - rtx src = SET_SRC (x); - - while (GET_CODE (src) == SIGN_EXTEND - || GET_CODE (src) == ZERO_EXTEND - || GET_CODE (src) == TRUNCATE - || (GET_CODE (src) == SUBREG && subreg_lowpart_p (src))) - src = XEXP (src, 0); - - set_reg_attrs_from_value (dest, src); - } + set_reg_attrs_from_value (dest, SET_SRC (x)); /* ... fall through ... */ |