mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-19 19:29:31 +00:00
68dc310942
int test2(int * P, int* Q, int A, int B) {
return P+A == P;
}
into:
test2:
movl 4(%esp), %eax
movl 12(%esp), %eax
shll $2, %eax
cmpl $0, %eax
sete %al
movzbl %al, %eax
ret
instead of:
test2:
movl 4(%esp), %eax
movl 12(%esp), %ecx
leal (%eax,%ecx,4), %ecx
cmpl %eax, %ecx
sete %al
movzbl %al, %eax
ret
ICC is producing worse code:
test2:
movl 4(%esp), %eax #8.5
movl 12(%esp), %edx #8.5
lea (%edx,%edx), %ecx #9.9
addl %ecx, %ecx #9.9
addl %eax, %ecx #9.9
cmpl %eax, %ecx #9.16
movl $0, %eax #9.16
sete %al #9.16
ret #9.16
as is GCC (looks like our old code):
test2:
movl 4(%esp), %edx
movl 12(%esp), %eax
leal (%edx,%eax,4), %ecx
cmpl %edx, %ecx
sete %al
movzbl %al, %eax
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19430 91177308-0d34-0410-b5e6-96231b3b80d8
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|---|---|---|
| .. | ||
| SelectionDAG | ||
| AsmPrinter.cpp | ||
| BranchFolding.cpp | ||
| IntrinsicLowering.cpp | ||
| LiveInterval.cpp | ||
| LiveInterval.h | ||
| LiveIntervalAnalysis.cpp | ||
| LiveIntervalAnalysis.h | ||
| LiveVariables.cpp | ||
| MachineBasicBlock.cpp | ||
| MachineCodeEmitter.cpp | ||
| MachineFunction.cpp | ||
| MachineInstr.cpp | ||
| Makefile | ||
| Passes.cpp | ||
| PHIElimination.cpp | ||
| PhysRegTracker.h | ||
| PrologEpilogInserter.cpp | ||
| RegAllocIterativeScan.cpp | ||
| RegAllocLinearScan.cpp | ||
| RegAllocLocal.cpp | ||
| RegAllocSimple.cpp | ||
| TwoAddressInstructionPass.cpp | ||
| UnreachableBlockElim.cpp | ||
| VirtRegMap.cpp | ||
| VirtRegMap.h | ||