Imported Upstream version 6.0.0.172

Former-commit-id: f3cc9b82f3e5bd8f0fd3ebc098f789556b44e9cd

external/llvm/test/Transforms/LowerInvoke/2003-12-10-Crash.ll

@@ -0,0 +1,25 @@
+; This testcase was reduced from Shootout-C++/reversefile.cpp by bugpoint
+
+; RUN: opt < %s -lowerinvoke -disable-output
+
+declare void @baz()
+
+declare void @bar()
+
+define void @foo() personality i32 (...)* @__gxx_personality_v0 {
+then:
+	invoke void @baz( )
+			to label %invoke_cont.0 unwind label %try_catch
+invoke_cont.0:		; preds = %then
+	invoke void @bar( )
+			to label %try_exit unwind label %try_catch
+try_catch:		; preds = %invoke_cont.0, %then
+	%__tmp.0 = phi i32* [ null, %invoke_cont.0 ], [ null, %then ]		; <i32*> [#uses=0]
+  %res = landingpad { i8* }
+          cleanup
+	ret void
+try_exit:		; preds = %invoke_cont.0
+	ret void
+}
+
+declare i32 @__gxx_personality_v0(...)

external/llvm/test/Transforms/LowerInvoke/lowerinvoke.ll

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+; RUN: opt < %s -lowerinvoke -S | FileCheck %s
+; RUN: opt < %s -passes='lowerinvoke' -S | FileCheck %s
+
+declare i32 @external_func(i64 %arg)
+
+define i32 @invoke_test(i64 %arg) personality i8* null {
+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 } 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