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(emit_unop_insn): Don't do -fforce-mem for SIGN_EXTEND.
author
Richard Kenner
<kenner@gcc.gnu.org>
Wed, 27 Dec 1995 20:25:01 +0000
(15:25 -0500)
committer
Richard Kenner
<kenner@gcc.gnu.org>
Wed, 27 Dec 1995 20:25:01 +0000
(15:25 -0500)
From-SVN: r10872
gcc/optabs.c
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diff --git
a/gcc/optabs.c
b/gcc/optabs.c
index bb1b8398945bf0c594638eb861fc05161d772a91..cae4c4e9bd090e4e940b4037b3d3a36bef71042a 100644
(file)
--- 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. */