Don't build switch lookup tables for dllimport or TLS variables

[oota-llvm.git] / test / Transforms / SimplifyCFG / invoke.ll

diff --git a/test/Transforms/SimplifyCFG/invoke.ll b/test/Transforms/SimplifyCFG/invoke.ll
index c9169d41fffd74b17034891dc0fdba063f5b793f..5f513ac3e6dee7109db72d112ebeb2c03e2d0860 100644 (file)
--- a/test/Transforms/SimplifyCFG/invoke.ll
+++ b/test/Transforms/SimplifyCFG/invoke.ll
@@ -3,10 +3,13 @@ target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f3
 
 declare i32 @__gxx_personality_v0(...)
 declare void @__cxa_call_unexpected(i8*)
-declare i64 @llvm.objectsize.i64(i8*, i1) nounwind readonly
+declare void @purefn() nounwind readnone
+declare i32 @read_only() nounwind readonly
+declare i32 @nounwind_fn() nounwind
+declare i32 @fn()
 
 
-; CHECK: @f1
+; CHECK-LABEL: @f1(
 define i8* @f1() nounwind uwtable ssp {
 entry:
 ; CHECK: call void @llvm.trap()
@@ -25,7 +28,7 @@ lpad:
   unreachable
 }
 
-; CHECK: @f2
+; CHECK-LABEL: @f2(
 define i8* @f2() nounwind uwtable ssp {
 entry:
 ; CHECK: call void @llvm.trap()
@@ -43,3 +46,94 @@ lpad:
   tail call void @__cxa_call_unexpected(i8* %1) noreturn nounwind
   unreachable
 }
+
+; CHECK-LABEL: @f3(
+define i32 @f3() nounwind uwtable ssp {
+; CHECK-NEXT: entry
+entry:
+; CHECK-NEXT: ret i32 3
+  %call = invoke i32 @read_only()
+          to label %invoke.cont unwind label %lpad
+
+invoke.cont:
+  ret i32 3
+
+lpad:
+  %0 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
+          filter [0 x i8*] zeroinitializer
+  %1 = extractvalue { i8*, i32 } %0, 0
+  tail call void @__cxa_call_unexpected(i8* %1) noreturn nounwind
+  unreachable
+}
+
+; CHECK-LABEL: @f4(
+define i32 @f4() nounwind uwtable ssp {
+; CHECK-NEXT: entry
+entry:
+; CHECK-NEXT: call i32 @read_only()
+  %call = invoke i32 @read_only()
+          to label %invoke.cont unwind label %lpad
+
+invoke.cont:
+; CHECK-NEXT: ret i32 %call
+  ret i32 %call
+
+lpad:
+  %0 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
+          filter [0 x i8*] zeroinitializer
+  %1 = extractvalue { i8*, i32 } %0, 0
+  tail call void @__cxa_call_unexpected(i8* %1) noreturn nounwind
+  unreachable
+}
+
+; CHECK-LABEL: @f5(
+define i32 @f5(i1 %cond, i8* %a, i8* %b) {
+entry:
+  br i1 %cond, label %x, label %y
+
+x:
+; CHECK: invoke i32 @fn()
+  %call = invoke i32 @fn()
+          to label %cont unwind label %lpad
+
+y:
+; CHECK: call i32 @nounwind_fn()
+  %call2 = invoke i32 @nounwind_fn()
+           to label %cont unwind label %lpad
+
+cont:
+; CHECK: phi i32
+; CHECK: ret i32 %phi
+  %phi = phi i32 [%call, %x], [%call2, %y]
+  ret i32 %phi
+
+lpad:
+; CHECK-NOT: phi
+  %phi2 = phi i8* [%a, %x], [%b, %y]
+  %0 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
+          filter [0 x i8*] zeroinitializer
+; CHECK: __cxa_call_unexpected(i8* %a)
+  tail call void @__cxa_call_unexpected(i8* %phi2) noreturn nounwind
+  unreachable
+}
+
+; CHECK-LABEL: @f6(
+define void @f6() {
+entry:
+  invoke void @purefn()
+          to label %invoke.cont1 unwind label %lpad
+
+invoke.cont1:
+  %foo = invoke i32 @fn()
+          to label %invoke.cont2 unwind label %lpad
+
+invoke.cont2:
+  ret void
+
+lpad:
+; CHECK-NOT: phi
+  %tmp = phi i8* [ null, %invoke.cont1 ], [ null, %entry ]
+  landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
+          cleanup
+  ret void
+}