Chris Lattner e70da20f9a implement a readme entry, compiling the code into: ... _foo: movl $12, %eax andl 4(%esp), %eax movl _array(%eax), %eax ret instead of: _foo: movl 4(%esp), %eax shrl $2, %eax andl $3, %eax movl _array(,%eax,4), %eax ret As it turns out, this triggers all the time, in a wide variety of situations, for example, I see diffs like this in various programs: - movl 8(%eax), %eax - shll $2, %eax - andl $1020, %eax - movl (%esi,%eax), %eax + movzbl 8(%eax), %eax + movl (%esi,%eax,4), %eax - shll $2, %edx - andl $1020, %edx - movl (%edi,%edx), %edx + andl $255, %edx + movl (%edi,%edx,4), %edx Unfortunately, I also see stuff like this, which can be fixed in the X86 backend: - andl $85, %ebx - addl _bit_count(,%ebx,4), %ebp + shll $2, %ebx + andl $340, %ebx + addl _bit_count(%ebx), %ebp git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44656 91177308-0d34-0410-b5e6-96231b3b80d8		2007-12-06 07:33:36 +00:00
..
Alpha	xfail a test	2007-11-28 05:37:13 +00:00
ARM	Fix for PR1831: if all defs of an interval are re-materializable, then it's a preferred spill candiate.	2007-12-06 00:01:56 +00:00
CBackend	Change all floating constants that are not exactly	2007-09-05 17:50:36 +00:00
Generic	upgrade this test	2007-11-28 18:22:12 +00:00
IA64	Convert .cvsignore files	2007-06-29 16:35:07 +00:00
PowerPC	Fix a crash on invalid code due to memcpy lowering.	2007-11-27 22:14:42 +00:00
SPARC	Convert tests using "| wc -l | grep ..." to use the count script.	2007-08-15 13:36:28 +00:00
X86	implement a readme entry, compiling the code into:	2007-12-06 07:33:36 +00:00