bccc9aa81c
We currently assert in vectorizeTree(TreeEntry*) when processing a PHI bundle in a block containing a catchswitch. We attempt to set the IRBuilder insertion point following the catchswitch, which is invalid. This is done so that ShuffleBuilder.finalize() knows where to insert a shuffle if one is needed. To avoid this occurring, watch out for catchswitch blocks during buildTree_rec() processing, and avoid adding PHIs in such blocks to the vectorizable tree. It is unlikely that constraining vectorization over an exception path will cause a noticeable performance loss, so this seems preferable to trying to anticipate when a shuffle will and will not be required.
94 lines
4.0 KiB
LLVM
94 lines
4.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -slp-vectorizer -S -mtriple=x86_64-pc-windows-msvc19.29.30145 < %s | FileCheck %s
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; This used to crash in SLP vectorization when attempting to set the
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; IRBuilder's insertion point to the end of a catchswitch block, which
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; is invalid. Only phis and the catchswitch may be present, so we must
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; avoid trying to insert shuffles into such a block.
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%typeA = type { i8**, i8*, [20 x i8] }
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@globalA = external global %typeA
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declare i32 @__CxxFrameHandler3(...)
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declare void @funcA()
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define void @important_func() personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
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; CHECK-LABEL: @important_func(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LABELB:%.*]]
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; CHECK: labelB:
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; CHECK-NEXT: invoke void @funcA()
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; CHECK-NEXT: to label [[LABELC:%.*]] unwind label [[LABELD:%.*]]
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; CHECK: labelC:
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; CHECK-NEXT: invoke void @funcA()
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; CHECK-NEXT: to label [[LABELE:%.*]] unwind label [[LABELF:%.*]]
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; CHECK: labelD:
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; CHECK-NEXT: [[TMP0:%.*]] = cleanuppad within none []
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; CHECK-NEXT: unreachable
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; CHECK: labelE:
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; CHECK-NEXT: [[TMP1:%.*]] = extractelement <4 x float> <float 0x7FF0000000000000, float 0x7FF0000000000000, float 0x7FF0000000000000, float 0xFFF0000000000000>, i64 1
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; CHECK-NEXT: [[F:%.*]] = extractelement <4 x float> <float 0x7FF0000000000000, float 0x7FF0000000000000, float 0x7FF0000000000000, float 0xFFF0000000000000>, i64 2
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; CHECK-NEXT: invoke void @funcA()
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; CHECK-NEXT: to label [[LABELG:%.*]] unwind label [[CATCH_DISPATCH:%.*]]
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; CHECK: labelF:
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; CHECK-NEXT: [[TMP2:%.*]] = cleanuppad within none []
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; CHECK-NEXT: cleanupret from [[TMP2]] unwind to caller
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; CHECK: labelG:
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; CHECK-NEXT: [[G:%.*]] = extractelement <4 x float> <float 0x7FF0000000000000, float 0x7FF0000000000000, float 0x7FF0000000000000, float 0xFFF0000000000000>, i64 0
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; CHECK-NEXT: [[H:%.*]] = extractelement <4 x float> <float 0x7FF0000000000000, float 0x7FF0000000000000, float 0x7FF0000000000000, float 0xFFF0000000000000>, i64 3
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; CHECK-NEXT: invoke void @funcA()
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; CHECK-NEXT: to label [[LABELH:%.*]] unwind label [[CATCH_DISPATCH]]
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; CHECK: labelH:
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; CHECK-NEXT: unreachable
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; CHECK: catch.dispatch:
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; CHECK-NEXT: [[TMP3:%.*]] = phi float [ [[G]], [[LABELG]] ], [ [[TMP1]], [[LABELE]] ]
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; CHECK-NEXT: [[TMP4:%.*]] = phi float [ [[H]], [[LABELG]] ], [ [[F]], [[LABELE]] ]
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; CHECK-NEXT: [[TMP5:%.*]] = catchswitch within none [label %catch] unwind to caller
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; CHECK: catch:
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; CHECK-NEXT: [[TMP6:%.*]] = catchpad within [[TMP5]] [%typeA* @globalA, i32 8, i8* null]
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; CHECK-NEXT: unreachable
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;
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entry:
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br label %labelB
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labelB:
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invoke void @funcA()
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to label %labelC unwind label %labelD
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labelC:
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invoke void @funcA()
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to label %labelE unwind label %labelF
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labelD:
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%0 = cleanuppad within none []
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unreachable
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labelE:
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%1 = extractelement <4 x float> <float 0x7FF0000000000000, float 0x7FF0000000000000, float 0x7FF0000000000000, float 0xFFF0000000000000>, i64 1
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%f = extractelement <4 x float> <float 0x7FF0000000000000, float 0x7FF0000000000000, float 0x7FF0000000000000, float 0xFFF0000000000000>, i64 2
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invoke void @funcA()
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to label %labelG unwind label %catch.dispatch
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labelF:
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%2 = cleanuppad within none []
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cleanupret from %2 unwind to caller
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labelG:
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%g = extractelement <4 x float> <float 0x7FF0000000000000, float 0x7FF0000000000000, float 0x7FF0000000000000, float 0xFFF0000000000000>, i64 0
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%h = extractelement <4 x float> <float 0x7FF0000000000000, float 0x7FF0000000000000, float 0x7FF0000000000000, float 0xFFF0000000000000>, i64 3
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invoke void @funcA()
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to label %labelH unwind label %catch.dispatch
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labelH:
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unreachable
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catch.dispatch:
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%3 = phi float [ %g, %labelG ], [ %1, %labelE ]
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%4 = phi float [ %h, %labelG ], [ %f, %labelE ]
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%5 = catchswitch within none [label %catch] unwind to caller
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catch:
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%6 = catchpad within %5 [%typeA* @globalA, i32 8, i8* null]
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unreachable
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}
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