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| author | Jeff Law <law@redhat.com> | 2017-01-05 00:38:48 -0700 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 2017-01-05 00:38:48 -0700 |
| commit | d80c6d02fdf0c37596e51392ade43414a350373a (patch) | |
| tree | 8e37be87c8ec04e67bbf7f825c453fd039b46d57 /gcc/rtl.h | |
| parent | 0f9cf7ff836bbc7d4f68e47918c878983c08e386 (diff) | |
| download | gcc-d80c6d02fdf0c37596e51392ade43414a350373a.zip gcc-d80c6d02fdf0c37596e51392ade43414a350373a.tar.gz gcc-d80c6d02fdf0c37596e51392ade43414a350373a.tar.bz2 | |
re PR rtl-optimization/78812 (Wrong code generation due to hoisting memory load across function call)
PR tree-optimizatin/78812
* rtl.h (contains_mem_rtx_p): Prototype.
* ifcvt.c (containts_mem_rtx_p): Move from here to...
* rtlanal.c (contains_mem_rtx_p): Here and remvoe static linkage.
* gcse.c (prune_expressions): Use contains_mem_rtx_p to discover
and prune MEMs that are not at the toplevel of a SET_SRC rtx. Look
through ZERO_EXTEND and SIGN_EXTEND when trying to avoid pruning
MEMs.
PR tree-optimization/78812
* g++.dg/torture/pr78812.C: New test.
From-SVN: r244093
Diffstat (limited to 'gcc/rtl.h')
| -rw-r--r-- | gcc/rtl.h | 1 |
1 files changed, 1 insertions, 0 deletions
@@ -3090,6 +3090,7 @@ extern bool rtx_referenced_p (const_rtx, const_rtx); extern bool tablejump_p (const rtx_insn *, rtx_insn **, rtx_jump_table_data **); extern int computed_jump_p (const rtx_insn *); extern bool tls_referenced_p (const_rtx); +extern bool contains_mem_rtx_p (rtx x); /* Overload for refers_to_regno_p for checking a single register. */ inline bool |