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| author | shinwell <shinwell@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-01-08 08:33:42 +0000 |
|---|---|---|
| committer | shinwell <shinwell@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-01-08 08:33:42 +0000 |
| commit | dac21d574a4bafb500582fc847f4c3e7d781f3ba (patch) | |
| tree | 86d028c760c73cbf43467080ea39ca9e8bbad562 /gcc/tree-ssa-ter.c | |
| parent | 41a87cb41b7102cf35ddb6e4fe40896471bf3226 (diff) | |
| download | gcc-dac21d574a4bafb500582fc847f4c3e7d781f3ba.tar.gz | |
PR tree-optimization/29877
gcc/
* tree-ssa-ter.c (is_replaceable_p): Deem assignments with
a register variable on the RHS to not be replaceable.
gcc/testsuite/
* gcc.dg/pr16194.c: Skip test entirely if we don't know the
name of a hard register for the target concerned. Adjust dg-error
directives to cope with new behaviour of TER.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@120571 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-ssa-ter.c')
| -rw-r--r-- | gcc/tree-ssa-ter.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/tree-ssa-ter.c b/gcc/tree-ssa-ter.c index ca67f91e66e..c6b7ab39dce 100644 --- a/gcc/tree-ssa-ter.c +++ b/gcc/tree-ssa-ter.c @@ -393,6 +393,12 @@ is_replaceable_p (tree stmt) && FLOAT_TYPE_P (TREE_TYPE (GENERIC_TREE_OPERAND (stmt, 1)))) return false; + /* An assignment with a register variable on the RHS is not + replaceable. */ + if (TREE_CODE (GENERIC_TREE_OPERAND (stmt, 1)) == VAR_DECL + && DECL_HARD_REGISTER (GENERIC_TREE_OPERAND (stmt, 1))) + return false; + /* Calls to functions with side-effects cannot be replaced. */ if ((call_expr = get_call_expr_in (stmt)) != NULL_TREE) { |