[ARM] Fix -Wunused-variable in ARMFrameLowering.cpp (NFC)

DamonFool · DamonFool · commit 584e00a3161c · 2024-10-17T18:46:26.000+08:00
/llvm-project/llvm/lib/Target/ARM/ARMFrameLowering.cpp:1028:9:
error: unused variable 'FPOffset' [-Werror,-Wunused-variable]
    int FPOffset = MFI.getObjectOffset(FramePtrSpillFI);
        ^
1 error generated.
diff --git a/llvm/lib/Target/ARM/ARMFrameLowering.cpp b/llvm/lib/Target/ARM/ARMFrameLowering.cpp
@@ -1025,7 +1025,7 @@ void ARMFrameLowering::emitPrologue(MachineFunction &MF,
   }
   if (HasFP) {
     // Offset from the CFA to the saved frame pointer, will be negative.
-    int FPOffset = MFI.getObjectOffset(FramePtrSpillFI);
+    [[maybe_unused]] int FPOffset = MFI.getObjectOffset(FramePtrSpillFI);
     LLVM_DEBUG(dbgs() << "FramePtrSpillFI: " << FramePtrSpillFI
                       << ", FPOffset: " << FPOffset << "\n");
     assert(getMaxFPOffset(STI, *AFI, MF) <= FPOffset &&

Original file line number	Diff line number	Diff line change
`@@ -1025,7 +1025,7 @@ void ARMFrameLowering::emitPrologue(MachineFunction &MF,`
`1025`	`1025`	`}`
`1026`	`1026`	`if (HasFP) {`
`1027`	`1027`	`// Offset from the CFA to the saved frame pointer, will be negative.`
`1028`		`- int FPOffset = MFI.getObjectOffset(FramePtrSpillFI);`
	`1028`	`+ [[maybe_unused]] int FPOffset = MFI.getObjectOffset(FramePtrSpillFI);`
`1029`	`1029`	`LLVM_DEBUG(dbgs() << "FramePtrSpillFI: " << FramePtrSpillFI`
`1030`	`1030`	`<< ", FPOffset: " << FPOffset << "\n");`
`1031`	`1031`	`assert(getMaxFPOffset(STI, *AFI, MF) <= FPOffset &&`