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| author | Andrew Stubbs <ams@codesourcery.com> | 2018-12-14 11:49:28 +0000 |
|---|---|---|
| committer | Andrew Stubbs <ams@gcc.gnu.org> | 2018-12-14 11:49:28 +0000 |
| commit | f961ec70ee07768f87e9e2ce2b3cac4160fd065e (patch) | |
| tree | 126a1387fed88b90136c7fc4ca7555804788d726 /gcc/lra-int.h | |
| parent | 65e0a92b2353927e50a26a3a0628a36aebc85b40 (diff) | |
| download | gcc-f961ec70ee07768f87e9e2ce2b3cac4160fd065e.zip gcc-f961ec70ee07768f87e9e2ce2b3cac4160fd065e.tar.gz gcc-f961ec70ee07768f87e9e2ce2b3cac4160fd065e.tar.bz2 | |
Fix LRA bug
This patch fixes an ICE building libgfortran/random.c.
The problem was an adddi3 instruction that had an eliminable frame pointer.
GCN adddi3 includes a match_scratch, which LRA substitutes with a REG, and
checks if it can be converted back to a scratch afterwards. In the meantime,
the add was converted to a move, meaning that the instruction pattern
completely changed, thus causing a segfault when the instruction is revisited
in restore_scratches.
2018-12-14 Andrew Stubbs <ams@codesourcery.com>
gcc/
* gcc/lra-int.h (lra_register_new_scratch_op): Add third parameter.
* gcc/lra-remat.c (update_scratch_ops): Pass icode to
lra_register_new_scratch_op.
* gcc/lra.c (struct sloc): Add icode field.
(lra_register_new_scratch_op): Add icode parameter.
Use icode to skip insns that have changed beyond recognition.
From-SVN: r267132
Diffstat (limited to 'gcc/lra-int.h')
| -rw-r--r-- | gcc/lra-int.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/lra-int.h b/gcc/lra-int.h index dc365d7..6e0eb96 100644 --- a/gcc/lra-int.h +++ b/gcc/lra-int.h @@ -336,7 +336,7 @@ extern void lra_create_copy (int, int, int); extern lra_copy_t lra_get_copy (int); extern bool lra_former_scratch_p (int); extern bool lra_former_scratch_operand_p (rtx_insn *, int); -extern void lra_register_new_scratch_op (rtx_insn *, int); +extern void lra_register_new_scratch_op (rtx_insn *, int, int); extern int lra_new_regno_start; extern int lra_constraint_new_regno_start; |