38 lines
1.1 KiB
LLVM
38 lines
1.1 KiB
LLVM
; RUN: opt -instcombine -S < %s | FileCheck %s
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target triple = "x86_64-pc-windows-msvc"
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define i1 @test1(i8* %p) personality i32 (...)* @__CxxFrameHandler3 {
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entry:
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%a = getelementptr i8, i8* %p, i64 1
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invoke void @may_throw()
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to label %invoke.cont unwind label %catch.dispatch
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invoke.cont:
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%b = getelementptr inbounds i8, i8* %a, i64 1
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invoke void @may_throw()
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to label %exit unwind label %catch.dispatch
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catch.dispatch:
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%c = phi i8* [ %b, %invoke.cont ], [ %a, %entry ]
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%tmp1 = catchswitch within none [label %catch] unwind to caller
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catch:
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%tmp2 = catchpad within %tmp1 [i8* null, i32 64, i8* null]
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catchret from %tmp2 to label %exit
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exit:
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%d = phi i8* [ %a, %invoke.cont ], [ %c, %catch ]
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%cmp = icmp eq i8* %d, %a
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ret i1 %cmp
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}
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; CHECK-LABEL: define i1 @test1(
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; CHECK: %[[gep_a:.*]] = getelementptr i8, i8* %p, i64 1
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; CHECK: %[[gep_b:.*]] = getelementptr inbounds i8, i8* %p, i64 2
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; CHECK: phi i8* [ %[[gep_b]], {{.*}} ], [ %[[gep_a]], {{.*}} ]
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; CHECK: %tmp1 = catchswitch within none [label %catch] unwind to caller
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declare void @may_throw()
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declare i32 @__CxxFrameHandler3(...)
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