Chris Lattner 5d5261c819 Teach basicaa that x|c == x+c when the c bits of x are clear. This ... allows us to compile the example in readme.txt into: LBB1_1: ## %bb movl 4(%rdx,%rax), %ecx movl %ecx, %esi imull (%rdx,%rax), %esi imull %esi, %ecx movl %esi, 8(%rdx,%rax) imull %ecx, %esi movl %ecx, 12(%rdx,%rax) movl %esi, 16(%rdx,%rax) imull %ecx, %esi movl %esi, 20(%rdx,%rax) addq $16, %rax cmpq $4000, %rax jne LBB1_1 instead of: LBB1_1: movl (%rdx,%rax), %ecx imull 4(%rdx,%rax), %ecx movl %ecx, 8(%rdx,%rax) imull 4(%rdx,%rax), %ecx movl %ecx, 12(%rdx,%rax) imull 8(%rdx,%rax), %ecx movl %ecx, 16(%rdx,%rax) imull 12(%rdx,%rax), %ecx movl %ecx, 20(%rdx,%rax) addq $16, %rax cmpq $4000, %rax jne LBB1_1 GCC (4.2) doesn't seem to be able to eliminate the loads in this testcase either, it generates: L2: movl (%rdx), %eax imull 4(%rdx), %eax movl %eax, 8(%rdx) imull 4(%rdx), %eax movl %eax, 12(%rdx) imull 8(%rdx), %eax movl %eax, 16(%rdx) imull 12(%rdx), %eax movl %eax, 20(%rdx) addl $4, %ecx addq $16, %rdx cmpl $1002, %ecx jne L2 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89952 91177308-0d34-0410-b5e6-96231b3b80d8		2009-11-26 16:26:43 +00:00
..
Analysis	Teach basicaa that x|c == x+c when the c bits of x are clear. This	2009-11-26 16:26:43 +00:00
Archive
AsmParser	Fix MSVC warning ( | with bool and unsigned int).	2009-11-07 23:51:55 +00:00
Bitcode	Re-commit r86077 now that r86290 fixes the 179.art and 175.vpr ARM regressions.	2009-11-07 00:16:28 +00:00
CodeGen	When all defs of a vr are implicit_def, delete all of the defs.	2009-11-26 00:32:36 +00:00
CompilerDriver	Remove dead code.	2009-11-11 04:10:24 +00:00
ExecutionEngine	* Move stub allocation inside the JITEmitter, instead of exposing a	2009-11-23 23:35:19 +00:00
Linker	Fix MemoryBuffer::getSTDIN to *not* return null if stdin is empty, this is a lame API.	2009-11-10 00:43:58 +00:00
MC	Pass StringRef by value.	2009-11-06 10:58:06 +00:00
Support	Perform explicit instantiations in the proper namespace, since Clang diagnoses this ill-formity.	2009-11-25 06:04:18 +00:00
System	API change Path::isSpecialFile to Path::isRegularFile, improve semantics in regards to comments from 89765 post review.	2009-11-25 06:32:19 +00:00
Target	Teach basicaa that x|c == x+c when the c bits of x are clear. This	2009-11-26 16:26:43 +00:00
Transforms	Reverting patch in revision 89758, initial attempt at fixing PR5373 has proven to be bogus.	2009-11-25 05:38:41 +00:00
VMCore	Move FunctionPassManagerImpl's dumpArguments and dumpPasses calls	2009-11-23 16:24:18 +00:00
Makefile	remove llvm-db: it is completely broken and if anyone wants to do a debugger,	2009-10-05 02:29:51 +00:00