Chris Lattner 51b01bf8a5 Make load->store deletion a bit smarter. This allows us to compile this: ...

void test(long long *P) { *P ^= 1; }

into just:

_test:
	movl	4(%esp), %eax
	xorl	$1, (%eax)
	ret

instead of code like this:

_test:
	movl	4(%esp), %ecx
        xorl    $1, (%ecx)
	movl	4(%ecx), %edx
	movl	%edx, 4(%ecx)
	ret

llvm-svn: 45762

2008-01-08 23:08:06 +00:00

197 KiB

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