Initialize ExtAddrMode::Scale

vitalybuka · vitalybuka · commit bd9ae596d863 · 2022-01-07T15:21:22.000-08:00
Detected by msan with: -Xclang -enable-noundef-analysis -mllvm -msan-eager-checks=1 Differential Revision: https://reviews.llvm.org/D116830
diff --git a/llvm/lib/Target/AArch64/AArch64InstrInfo.cpp b/llvm/lib/Target/AArch64/AArch64InstrInfo.cpp
@@ -2574,6 +2574,7 @@ AArch64InstrInfo::getAddrModeFromMemoryOp(const MachineInstr &MemI,
   AM.BaseReg = Base->getReg();
   AM.Displacement = Offset;
   AM.ScaledReg = 0;
+  AM.Scale = 0;
   return AM;
 }
 

Original file line number	Diff line number	Diff line change
`@@ -2574,6 +2574,7 @@ AArch64InstrInfo::getAddrModeFromMemoryOp(const MachineInstr &MemI,`
`2574`	`2574`	`AM.BaseReg = Base->getReg();`
`2575`	`2575`	`AM.Displacement = Offset;`
`2576`	`2576`	`AM.ScaledReg = 0;`
	`2577`	`+ AM.Scale = 0;`
`2577`	`2578`	`return AM;`
`2578`	`2579`	`}`
`2579`	`2580`