Add a test for r253323

Forgot to do this simultaneously with committing the fix.

llvm-svn: 253430

llvm/test/Transforms/GVN/funclet.ll

@@ -0,0 +1,47 @@
+; RUN: opt -basicaa -gvn -S < %s | FileCheck %s
+target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
+target triple = "i686-pc-windows-msvc"
+
+%eh.ThrowInfo = type { i32, i8*, i8*, i8* }
+%struct.A = type { i32* }
+
+@"_TI1?AUA@@" = external constant %eh.ThrowInfo
+
+define i8 @f() personality i32 (...)* @__CxxFrameHandler3 {
+entry:
+  %b = alloca i8
+  %c = alloca i8
+  store i8 42, i8* %b
+  store i8 13, i8* %c
+  invoke void @_CxxThrowException(i8* %b, %eh.ThrowInfo* nonnull @"_TI1?AUA@@")
+          to label %unreachable unwind label %catch.dispatch
+
+catch.dispatch:                                   ; preds = %entry
+  %catchpad = catchpad [i8* null, i32 64, i8* null]
+          to label %catch unwind label %catchendblock
+
+catch:                                            ; preds = %catch.dispatch
+  store i8 5, i8* %b
+  catchret %catchpad to label %try.cont
+
+try.cont:                                         ; preds = %catch
+  %load_b = load i8, i8* %b
+  %load_c = load i8, i8* %c
+  %add = add i8 %load_b, %load_c
+  ret i8 %add
+
+catchendblock:                                    ; preds = %catch.dispatch
+  catchendpad unwind to caller
+
+unreachable:                                      ; preds = %entry
+  unreachable
+}
+; CHECK-LABEL: define i8 @f(
+; CHECK:       %[[load_b:.*]] = load i8, i8* %b
+; CHECK-NEXT:  %[[load_c:.*]] = load i8, i8* %c
+; CHECK-NEXT:  %[[add:.*]] = add i8 %[[load_b]], %[[load_c]]
+; CHECK-NEXT:  ret i8 %[[add]]
+
+declare i32 @__CxxFrameHandler3(...)
+
+declare x86_stdcallcc void @_CxxThrowException(i8*, %eh.ThrowInfo*)