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d115107ef2
it may be used in contexts where preheader insertion may have failed due to an indirectbr. Make LoopSimplify's LoopSimplify::SeparateNestedLoop properly fail in the case that it would require splitting an indirectbr edge. These fix PR5502. llvm-svn: 89484
44 lines
1.6 KiB
LLVM
44 lines
1.6 KiB
LLVM
; RUN: opt < %s -S -loop-rotate -disable-output -verify-loop-info -verify-dom-info
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; PR5502
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define void @z80_do_opcodes() nounwind {
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entry:
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br label %while.cond
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while.cond: ; preds = %end_opcode, %entry
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br label %while.body
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while.body: ; preds = %while.cond
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br label %indirectgoto
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run_opcode: ; preds = %indirectgoto
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%tmp276 = load i8* undef ; <i8> [#uses=1]
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br label %indirectgoto
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if.else295: ; preds = %divide_late
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br label %end_opcode
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end_opcode: ; preds = %indirectgoto, %sw.default42406, %sw.default, %if.else295
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%opcode.2 = phi i8 [ %opcode.0, %indirectgoto ], [ 0, %sw.default42406 ], [ undef, %sw.default ], [ %opcode.0, %if.else295 ] ; <i8> [#uses=0]
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switch i32 undef, label %while.cond [
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i32 221, label %sw.bb11691
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i32 253, label %sw.bb30351
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]
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sw.bb11691: ; preds = %end_opcode
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br label %sw.default
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sw.default: ; preds = %sw.bb11691
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br label %end_opcode
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sw.bb30351: ; preds = %end_opcode
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br label %sw.default42406
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sw.default42406: ; preds = %sw.bb30351
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br label %end_opcode
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indirectgoto: ; preds = %run_opcode, %while.body
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%opcode.0 = phi i8 [ undef, %while.body ], [ %tmp276, %run_opcode ] ; <i8> [#uses=2]
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indirectbr i8* undef, [label %run_opcode, label %if.else295, label %end_opcode]
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}
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