| commit | 331d1bc5dfe1be9090e29f9af9579888a63a9a79 | [log] [tgz] |
|---|---|---|
| author | Chris Lattner <sabre@nondot.org> | Thu Nov 02 01:44:04 2006 +0000 |
| committer | Chris Lattner <sabre@nondot.org> | Thu Nov 02 01:44:04 2006 +0000 |
| tree | 3491c52c7ece828f32b3696fb4801a0a8f755af6 | |
| parent | 2a821601f1db665fbb825727aacf1a54d17b91ef [diff] |
Implement the getRegForInlineAsmConstraint method for PPC. With recent
sdisel changes, this eliminates a ton of copies around common inline asms.
For example:
int test2(int Y, int X) {
asm("foo %0, %1" : "=r"(X): "r"(X));
return X;
}
now compiles to:
_test2:
foo r3, r4
blr
instead of:
_test2:
mr r2, r4
foo r2, r2
mr r3, r2
blr
GCC produces:
_test2:
foo r4, r4
mr r3,r4
blr
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31367 91177308-0d34-0410-b5e6-96231b3b80d8