71 lines
1.8 KiB
LLVM
71 lines
1.8 KiB
LLVM
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; PruneEH is less powerful than simplify-cfg in terms of cfg simplification,
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; so it leaves some of the unreachable stuff hanging around.
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; Checking it with CHECK-OLD.
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;
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; RUN: opt -prune-eh -enable-new-pm=0 -S < %s | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-OLD
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; RUN: opt -passes='function-attrs,function(simplify-cfg)' -S < %s | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-NEW
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target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
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target triple = "i386-pc-windows-msvc"
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declare void @neverthrows() nounwind
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define void @test1() personality i32 (...)* @__CxxFrameHandler3 {
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invoke void @neverthrows()
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to label %try.cont unwind label %cleanuppad
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try.cont:
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ret void
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cleanuppad:
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%cp = cleanuppad within none []
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br label %cleanupret
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cleanupret:
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cleanupret from %cp unwind to caller
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}
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; CHECK-LABEL: define void @test1(
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; CHECK: call void @neverthrows()
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; CHECK-NEW-NEXT: ret void
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; CHECK-NEW-NEXT: }
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; CHECK-OLD: ret void
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; CHECK-OLD: %[[cp:.*]] = cleanuppad within none []
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; CHECK-OLD-NEXT: unreachable
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; CHECK-OLD: cleanupret from %[[cp]] unwind to caller
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define void @test2() personality i32 (...)* @__CxxFrameHandler3 {
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invoke void @neverthrows()
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to label %try.cont unwind label %catchswitch
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try.cont:
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ret void
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catchswitch:
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%cs = catchswitch within none [label %catchpad] unwind to caller
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catchpad:
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%cp = catchpad within %cs []
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unreachable
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ret:
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ret void
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}
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; CHECK-LABEL: define void @test2(
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; CHECK: call void @neverthrows()
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; CHECK-NEW-NEXT: ret void
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; CHECK-NEW-NEXT: }
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; CHECK-OLD: ret void
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; CHECK-OLD: %[[cs:.*]] = catchswitch within none [label
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; CHECK-OLD: catchpad within %[[cs]] []
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; CHECK-OLD-NEXT: unreachable
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; CHECK-OLD:ret void
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declare i32 @__CxxFrameHandler3(...)
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