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| author | kenner <kenner@138bc75d-0d04-0410-961f-82ee72b054a4> | 1995-12-27 20:25:01 +0000 |
|---|---|---|
| committer | kenner <kenner@138bc75d-0d04-0410-961f-82ee72b054a4> | 1995-12-27 20:25:01 +0000 |
| commit | d1b3a94da1b2834245104caccbb687fbe952ef6b (patch) | |
| tree | c81211d8e387a783a055d111b21f78b8d8b9b881 /gcc/optabs.c | |
| parent | 73d35032db290ea5133ab73ed455e00c44e66702 (diff) | |
| download | gcc-d1b3a94da1b2834245104caccbb687fbe952ef6b.tar.gz | |
(emit_unop_insn): Don't do -fforce-mem for SIGN_EXTEND.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@10872 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/optabs.c')
| -rw-r--r-- | gcc/optabs.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/optabs.c b/gcc/optabs.c index bb1b8398945..cae4c4e9bd0 100644 --- a/gcc/optabs.c +++ b/gcc/optabs.c @@ -2374,7 +2374,9 @@ emit_unop_insn (icode, target, op0, code) op0 = protect_from_queue (op0, 0); - if (flag_force_mem) + /* Sign extension from memory is often done specially on RISC + machines, so forcing into a register here can pessimize code. */ + if (flag_force_mem && code != SIGN_EXTEND) op0 = force_not_mem (op0); /* Now, if insn does not accept our operands, put them into pseudos. */ |