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| author | Vladimir Makarov <vmakarov@redhat.com> | 2015-07-14 20:54:00 +0000 |
|---|---|---|
| committer | Vladimir Makarov <vmakarov@gcc.gnu.org> | 2015-07-14 20:54:00 +0000 |
| commit | 6e5ad0f92c3e5b4f8c3fcf5a67265874beda1040 (patch) | |
| tree | 62ccd56b35e933003653d5a5b1bcc8d7d34eb5d0 /gcc/lra-constraints.c | |
| parent | 5fd6ec3e4b29ed0e4ba1ca81d642ee718004db7d (diff) | |
| download | gcc-6e5ad0f92c3e5b4f8c3fcf5a67265874beda1040.zip gcc-6e5ad0f92c3e5b4f8c3fcf5a67265874beda1040.tar.gz gcc-6e5ad0f92c3e5b4f8c3fcf5a67265874beda1040.tar.bz2 | |
re PR rtl-optimization/66626 (gcc.dg/torture/stackalign/non-local-goto-5.c segfaults w/ -mregparm=3 or -miamcu)
2015-07-14 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/66626
* lra-constraints.c (lra_constraints): Prevent equivalence
substitution for static chain pseudo in functions with nonlocal
goto.
2015-07-14 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/66626
* gcc.target/i386/pr66626.c: New.
From-SVN: r225789
Diffstat (limited to 'gcc/lra-constraints.c')
| -rw-r--r-- | gcc/lra-constraints.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/gcc/lra-constraints.c b/gcc/lra-constraints.c index ddb91dd..58a388f 100644 --- a/gcc/lra-constraints.c +++ b/gcc/lra-constraints.c @@ -4306,7 +4306,13 @@ lra_constraints (bool first_p) && ((CONST_POOL_OK_P (PSEUDO_REGNO_MODE (i), x) && (targetm.preferred_reload_class (x, lra_get_allocno_class (i)) == NO_REGS)) - || contains_symbol_ref_p (x)))) + || contains_symbol_ref_p (x))) + /* Static chain equivalence may contain eliminable + regs and the result of elimination might be wrong + after restoring frame pointer for a nonlocal + goto. */ + || (cfun->static_chain_decl && crtl->has_nonlocal_goto + && REG_EXPR (reg) == cfun->static_chain_decl)) ira_reg_equiv[i].defined_p = false; if (contains_reg_p (x, false, true)) ira_reg_equiv[i].profitable_p = false; |