Do not check stmts after the tail call candidate if the optimization has been aborted already. (#15065)

Sergey Andreenko · web-flow · commit fc8bd03dd1db · 2017-11-16T18:48:18.000-08:00
Fix #15056
diff --git a/src/jit/morph.cpp b/src/jit/morph.cpp
@@ -8478,9 +8478,12 @@ GenTreePtr Compiler::fgMorphCall(GenTreeCall* call)
         }
 #endif // FEATURE_PAL
 
-        if (!fgCheckStmtAfterTailCall())
+        if (szFailReason == nullptr)
         {
-            szFailReason = "Unexpected statements after the tail call";
+            if (!fgCheckStmtAfterTailCall())
+            {
+                szFailReason = "Unexpected statements after the tail call";
+            }
         }
 
         if (szFailReason != nullptr)

Original file line number	Diff line number	Diff line change
`@@ -8478,9 +8478,12 @@ GenTreePtr Compiler::fgMorphCall(GenTreeCall* call)`
`8478`	`8478`	`}`
`8479`	`8479`	`#endif // FEATURE_PAL`
`8480`	`8480`
`8481`		`- if (!fgCheckStmtAfterTailCall())`
	`8481`	`+ if (szFailReason == nullptr)`
`8482`	`8482`	`{`
`8483`		`- szFailReason = "Unexpected statements after the tail call";`
	`8483`	`+ if (!fgCheckStmtAfterTailCall())`
	`8484`	`+ {`
	`8485`	`+ szFailReason = "Unexpected statements after the tail call";`
	`8486`	`+ }`
`8484`	`8487`	`}`
`8485`	`8488`
`8486`	`8489`	`if (szFailReason != nullptr)`