60 lines
1.7 KiB
LLVM
60 lines
1.7 KiB
LLVM
; RUN: opt -codegenprepare -S < %s | FileCheck %s
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; The following target lines are needed for the test to exercise what it should.
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; Without these lines, CodeGenPrepare does not try to sink the bitcasts.
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target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-windows-msvc"
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declare i32 @__CxxFrameHandler3(...)
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declare void @f()
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declare void @g(i8*)
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; CodeGenPrepare will want to sink these bitcasts, but it selects the catchpad
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; blocks as the place to which the bitcast should be sunk. Since catchpads
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; do not allow non-phi instructions before the terminator, this isn't possible.
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; CHECK-LABEL: @test(
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define void @test(i32* %addr) personality i32 (...)* @__CxxFrameHandler3 {
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; CHECK: entry:
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; CHECK-NEXT: %x = getelementptr i32, i32* %addr, i32 1
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; CHECK-NEXT: %p1 = bitcast i32* %x to i8*
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entry:
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%x = getelementptr i32, i32* %addr, i32 1
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%p1 = bitcast i32* %x to i8*
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invoke void @f()
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to label %invoke.cont unwind label %catch1
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; CHECK: invoke.cont:
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; CHECK-NEXT: %y = getelementptr i32, i32* %addr, i32 2
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; CHECK-NEXT: %p2 = bitcast i32* %y to i8*
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invoke.cont:
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%y = getelementptr i32, i32* %addr, i32 2
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%p2 = bitcast i32* %y to i8*
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invoke void @f()
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to label %done unwind label %catch2
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done:
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ret void
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catch1:
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%cp1 = catchpad [] to label %catch.dispatch unwind label %catchend1
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catch2:
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%cp2 = catchpad [] to label %catch.dispatch unwind label %catchend2
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; CHECK: catch.dispatch:
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; CHECK-NEXT: %p = phi i8* [ %p1, %catch1 ], [ %p2, %catch2 ]
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catch.dispatch:
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%p = phi i8* [ %p1, %catch1 ], [ %p2, %catch2 ]
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call void @g(i8* %p)
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unreachable
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catchend1:
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catchendpad unwind to caller
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catchend2:
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catchendpad unwind to caller
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}
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