[Bug rtl-optimization/52876] [x32] - Sign extend 32 to 64bit then clear upper 32bits fails O1 or higher
hjl at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Wed Apr 11 19:32:00 GMT 2012
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52876
--- Comment #15 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> 2012-04-11 19:31:49 UTC ---
Author: hjl
Date: Wed Apr 11 19:31:45 2012
New Revision: 186351
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=186351
Log:
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.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr52876.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/emit-rtl.c
trunk/gcc/reginfo.c
trunk/gcc/testsuite/ChangeLog
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