[WinEH] Replace more lpad value uses with undef

[oota-llvm.git] / test / CodeGen / WinEH / seh-resume-phi.ll

diff --git a/test/CodeGen/WinEH/seh-resume-phi.ll b/test/CodeGen/WinEH/seh-resume-phi.ll
new file mode 100644 (file)
index 0000000..398cbc4
--- /dev/null
+++ b/test/CodeGen/WinEH/seh-resume-phi.ll
@@ -0,0 +1,67 @@
+; RUN: opt -S -winehprepare -sehprepare < %s | FileCheck %s
+
+target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-windows-msvc"
+
+declare void @might_crash(i8* %ehptr)
+declare i32 @filt()
+declare void @cleanup()
+declare i32 @__C_specific_handler(...)
+declare i32 @llvm.eh.typeid.for(i8*)
+
+define void @resume_phi() {
+entry:
+  invoke void @might_crash(i8* null)
+          to label %return unwind label %lpad1
+
+lpad1:
+  %ehvals1 = landingpad { i8*, i32 } personality i32 (...)* @__C_specific_handler
+          catch i32 ()* @filt
+  %ehptr1 = extractvalue { i8*, i32 } %ehvals1, 0
+  %ehsel1 = extractvalue { i8*, i32 } %ehvals1, 1
+  %filt_sel = tail call i32 @llvm.eh.typeid.for(i8* bitcast (i32 ()* @filt to i8*))
+  %matches = icmp eq i32 %ehsel1, %filt_sel
+  br i1 %matches, label %__except, label %eh.resume
+
+__except:
+  invoke void @might_crash(i8* %ehptr1)
+          to label %return unwind label %lpad2
+
+lpad2:
+  %ehvals2 = landingpad { i8*, i32 } personality i32 (...)* @__C_specific_handler
+          cleanup
+  %ehptr2 = extractvalue { i8*, i32 } %ehvals2, 0
+  %ehsel2 = extractvalue { i8*, i32 } %ehvals2, 1
+  call void @cleanup()
+  br label %eh.resume
+
+return:
+  ret void
+
+eh.resume:
+  %ehptr.phi = phi i8* [ %ehptr1, %lpad1 ], [ %ehptr2, %lpad2 ]
+  %ehsel.phi = phi i32 [ %ehsel1, %lpad1 ], [ %ehsel2, %lpad2 ]
+  %ehval.phi1 = insertvalue { i8*, i32 } undef, i8* %ehptr.phi, 0
+  %ehval.phi2 = insertvalue { i8*, i32 } %ehval.phi1, i32 %ehsel.phi, 1
+  resume { i8*, i32 } %ehval.phi2
+}
+
+; CHECK-LABEL: define void @resume_phi()
+; CHECK: invoke void @might_crash(i8* null)
+; CHECK: landingpad { i8*, i32 }
+; CHECK-NEXT: catch i32 ()* @filt
+; CHECK-NEXT: call i8* (...) @llvm.eh.actions(
+; CHECK-SAME: i32 1, i8* bitcast (i32 ()* @filt to i8*), i32 -1, i8* blockaddress(@resume_phi, %__except))
+; CHECK-NEXT: indirectbr {{.*}} [label %__except]
+;
+; CHECK: __except:
+;      FIXME: This should not be undef, it should be the new landingpad value, which
+;      should ultimately lower down to eax.
+; CHECK: invoke void @might_crash(i8* undef)
+; CHECK: landingpad { i8*, i32 }
+; CHECK-NEXT: cleanup
+; CHECK-NEXT: call i8* (...) @llvm.eh.actions(i32 0, void (i8*, i8*)* @resume_phi.cleanup)
+; CHECK-NEXT: indirectbr {{.*}} []
+
+; CHECK-LABEL: define internal void @resume_phi.cleanup(i8*, i8*)
+; CHECK: call void @cleanup()