[PATCH] Add a test for LowerInvoke that doesn't use "-enable-correct-eh-support"

[Mark Seaborn]

Hi asl, rafael,

Add a test for LowerInvoke that doesn't use "-enable-correct-eh-support"

None of the existing tests for LowerInvoke check LowerInvoke's output,
and all but one use "-enable-correct-eh-support", which is obsolete,
so those tests will be removed when that option is removed.

To make sure LowerInvoke will still have test coverage, this adds a
test for its default mode which converts invokes to calls.


http://llvm-reviews.chandlerc.com/D3124

Files:
  test/Transforms/LowerInvoke/lowerinvoke.ll

Index: test/Transforms/LowerInvoke/lowerinvoke.ll
===================================================================
--- /dev/null
+++ test/Transforms/LowerInvoke/lowerinvoke.ll
@@ -0,0 +1,25 @@
+; RUN: opt < %s -lowerinvoke -S | FileCheck %s
+
+declare i32 @external_func(i64 %arg)
+
+define i32 @invoke_test(i64 %arg) {
+entry:
+  %result = invoke fastcc i32 @external_func(i64 inreg %arg)
+      to label %cont unwind label %lpad
+cont:
+  ret i32 %result
+lpad:
+  %phi = phi i32 [ 99, %entry ]
+  %lp = landingpad { i8*, i32 } personality i8* null cleanup
+  ret i32 %phi
+}
+
+; The "invoke" should be converted to a "call".
+; CHECK-LABEL: define i32 @invoke_test
+; CHECK: %result = call fastcc i32 @external_func(i64 inreg %arg)
+; CHECK-NEXT: br label %cont
+
+; Note that this pass does not remove dead landingpad blocks.
+; CHECK: lpad:
+; CHECK-NOT: phi
+; CHECK: landingpad
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