7 Commits

Author	SHA1	Message	Date
Stephen Lin	f799e3f944	Convert CodeGen/*/*.ll tests to use the new CHECK-LABEL for easier debugging. No functionality change and all tests pass after conversion. ... This was done with the following sed invocation to catch label lines demarking function boundaries: sed -i '' "s/^;\( *\)\([A-Z0-9_]*\):\( *\)test\([A-Za-z0-9_-]*\):\( *\)$/;\1\2-LABEL:\3test\4:\5/g" test/CodeGen/*/*.ll which was written conservatively to avoid false positives rather than false negatives. I scanned through all the changes and everything looks correct. llvm-svn: 186258	2013-07-13 20:38:47 +00:00
Chandler Carruth	fd63436553	Relax the FileCheck assertion a bit -- all we really care about is that ... we're loading from the global array, not how it is spelled in the asm. This should fix the MSVC bots. llvm-svn: 148214	2012-01-15 09:38:59 +00:00
Chandler Carruth	4bb2eb15d4	FileCheck-ize a test, make it more specific to directly test the shift ... removal desired. llvm-svn: 148213	2012-01-15 09:32:57 +00:00
Dan Gohman	40503396da	Eliminate more uses of llvm-as and llvm-dis. ... llvm-svn: 81290	2009-09-08 23:54:48 +00:00
Chris Lattner	eedaf92fcf	third time around: instead of disabling this completely, ... only disable it if we don't know it will be obviously profitable. Still fixme, but less so. :) llvm-svn: 44658	2007-12-06 07:47:55 +00:00
Chris Lattner	b5fdfb9612	Actually, disable this code for now. More analysis and improvements to ... the X86 backend are needed before this should be enabled by default. llvm-svn: 44657	2007-12-06 07:44:31 +00:00
Chris Lattner	7c709a5d08	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 llvm-svn: 44656	2007-12-06 07:33:36 +00:00