486ed88533
As discussed in http://lists.llvm.org/pipermail/llvm-dev/2020-July/143801.html. Currently no users outside of unit tests. Replace all instances in tests of -constprop with -instsimplify. Notable changes in tests: * vscale.ll - @llvm.sadd.sat.nxv16i8 is evaluated by instsimplify, use a fake intrinsic instead * InsertElement.ll - insertelement undef is removed by instsimplify in @insertelement_undef llvm/test/Transforms/ConstProp moved to llvm/test/Transforms/InstSimplify/ConstProp Reviewed By: lattner, nikic Differential Revision: https://reviews.llvm.org/D85159
25 lines
876 B
LLVM
25 lines
876 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: opt < %s -instsimplify
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define void @build_tree(i32 %ml) {
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; <label>:0
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br label %bb2
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bb2: ; preds = %bb2, %0
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%reg137 = phi i32 [ %reg140, %bb2 ], [ 12, %0 ] ; <i32> [#uses=1]
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%reg138 = phi i32 [ %reg139, %bb2 ], [ 0, %0 ] ; <i32> [#uses=1]
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%reg139 = add i32 %reg138, 1 ; <i32> [#uses=1]
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%reg140 = add i32 %reg137, -1 ; <i32> [#uses=1]
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br i1 false, label %bb2, label %bb3
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bb3: ; preds = %bb2
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ret void
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}
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