phi check first

tobias-stadler · tobias-stadler · commit aff8bd29a65c · 2024-09-09T14:38:02.000+02:00
diff --git a/llvm/lib/CodeGen/MachineInstr.cpp b/llvm/lib/CodeGen/MachineInstr.cpp
@@ -1342,7 +1342,7 @@ bool MachineInstr::wouldBeTriviallyDead() const {
   // If we can move an instruction, we can remove it.  Otherwise, it has
   // a side-effect of some sort.
   bool SawStore = false;
-  return isSafeToMove(SawStore) || isPHI();
+  return isPHI() || isSafeToMove(SawStore);
 }
 
 static bool MemOperandsHaveAlias(const MachineFrameInfo &MFI, AAResults *AA,

Original file line number	Diff line number	Diff line change
`@@ -1342,7 +1342,7 @@ bool MachineInstr::wouldBeTriviallyDead() const {`
`1342`	`1342`	`// If we can move an instruction, we can remove it. Otherwise, it has`
`1343`	`1343`	`// a side-effect of some sort.`
`1344`	`1344`	`bool SawStore = false;`
`1345`		`- return isSafeToMove(SawStore) \|\| isPHI();`
	`1345`	`+ return isPHI() \|\| isSafeToMove(SawStore);`
`1346`	`1346`	`}`
`1347`	`1347`
`1348`	`1348`	`static bool MemOperandsHaveAlias(const MachineFrameInfo &MFI, AAResults *AA,`