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https://github.com/c64scene-ar/llvm-6502.git
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81ba70445f
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1857 91177308-0d34-0410-b5e6-96231b3b80d8
26 lines
748 B
LLVM
26 lines
748 B
LLVM
; When constant propogating terminator instructions, the basic block iterator
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; was not updated to refer to the final position of the new terminator. This
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; can be bad, f.e. because constproping a terminator can lead to the
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; destruction of PHI nodes, which invalidates the iterator!
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;
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; Fixed by adding new arguments to ConstantFoldTerminator
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;
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; RUN: as < %s | opt -constprop
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implementation
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void "build_tree"(int %ml)
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begin
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br label %bb2
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bb2:
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%reg137 = phi int [ %reg140, %bb2 ], [ 12, %0 ] ; <int> [#uses=2]
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%reg138 = phi uint [ %reg139, %bb2 ], [ 0, %0 ] ; <uint> [#uses=3]
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%reg139 = add uint %reg138, 1 ; <uint> [#uses=1]
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%reg140 = add int %reg137, -1 ; <int> [#uses=1]
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br bool false, label %bb2, label %bb3
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bb3:
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ret void
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end
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