forked from OSchip/llvm-project
e272b4ec17
Here is an example where the load ended up being done twice:
%A = global uint 0
uint %test(uint %B, ubyte %C) {
%tmp = load uint *%A;
%X = shl uint %tmp, ubyte %C
%Cv = sub ubyte 32, %C
%Y = shr uint %B, ubyte %Cv
%Z = or uint %Y, %X
store uint %Z, uint* %A
ret uint %Z
}
==>
subl $4, %esp
movl %ebx, (%esp)
movl 8(%esp), %edx
movl A, %eax
movb 12(%esp), %bl
movb %bl, %cl
shldl %cl, %edx, %eax
movb %bl, %cl
shldl %cl, %edx, A
movl (%esp), %ebx
addl $4, %esp
ret
llvm-svn: 25471
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| .. | ||
| .cvsignore | ||
| AsmWriterEmitter.cpp | ||
| AsmWriterEmitter.h | ||
| CodeEmitterGen.cpp | ||
| CodeEmitterGen.h | ||
| CodeGenInstruction.h | ||
| CodeGenRegisters.h | ||
| CodeGenTarget.cpp | ||
| CodeGenTarget.h | ||
| DAGISelEmitter.cpp | ||
| DAGISelEmitter.h | ||
| FileLexer.cpp | ||
| FileLexer.l | ||
| FileParser.cpp | ||
| FileParser.h | ||
| FileParser.y | ||
| InstrInfoEmitter.cpp | ||
| InstrInfoEmitter.h | ||
| Makefile | ||
| Record.cpp | ||
| Record.h | ||
| RegisterInfoEmitter.cpp | ||
| RegisterInfoEmitter.h | ||
| SubtargetEmitter.cpp | ||
| SubtargetEmitter.h | ||
| TableGen.cpp | ||
| TableGenBackend.cpp | ||
| TableGenBackend.h | ||