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| author | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-09-29 02:50:47 +0000 |
|---|---|---|
| committer | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-09-29 02:50:47 +0000 |
| commit | 93b4f514639d51295df376f9a0b54562b365e952 (patch) | |
| tree | 6ec2f8d5a10435c23e27413403888abc84af50b0 /gcc/tree-ssa-copy.c | |
| parent | f582bb6c92c50798e4f1e4a5a3ccc592d4215898 (diff) | |
| download | gcc-93b4f514639d51295df376f9a0b54562b365e952.tar.gz | |
PR 15089
* tree-ssa-copy.c (may_propagate_copy_into_asm): New.
* tree-flow.h (may_propagate_copy_into_asm): Declare.
* tree-ssa-ccp.c (replace_uses_in): Use it.
* tree-ssa-dom.c (cprop_operand): Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@88269 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-ssa-copy.c')
| -rw-r--r-- | gcc/tree-ssa-copy.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/gcc/tree-ssa-copy.c b/gcc/tree-ssa-copy.c index 447f149ab4a..63a3c20417d 100644 --- a/gcc/tree-ssa-copy.c +++ b/gcc/tree-ssa-copy.c @@ -156,6 +156,16 @@ may_propagate_copy (tree dest, tree orig) return true; } +/* Similarly, but we know that we're propagating into an ASM_EXPR. */ + +bool +may_propagate_copy_into_asm (tree dest) +{ + /* Hard register operands of asms are special. Do not bypass. */ + return !(TREE_CODE (dest) == SSA_NAME + && DECL_HARD_REGISTER (SSA_NAME_VAR (dest))); +} + /* Given two SSA_NAMEs pointers ORIG and NEW such that we are copy propagating NEW into ORIG, consolidate aliasing information so that |