204ade4102
Summary: Before the patch a try to reassociate ((v * 16) * 0) * 1 fall into infinite loop Reviewers: pankajchawla Differential Revision: http://reviews.llvm.org/D41467 From: Evgeny Stupachenko <evstupac@gmail.com> <evgeny.v.stupachenko@intel.com> llvm-svn: 326861
20 lines
587 B
LLVM
20 lines
587 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -nary-reassociate -S | FileCheck %s
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; The test check that compilation does not fall into infinite loop.
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define i8 @foo(i8 %v) local_unnamed_addr #0 {
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; CHECK-LABEL: @foo(
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; CHECK-NEXT: region.0:
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; CHECK-NEXT: [[TMP0:%.*]] = mul nsw i8 16, [[V:%.*]]
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; CHECK-NEXT: [[TMP1:%.*]] = mul nsw i8 0, [[TMP0]]
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; CHECK-NEXT: [[TMP2:%.*]] = mul nsw i8 1, [[TMP1]]
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; CHECK-NEXT: ret i8 [[TMP2]]
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;
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region.0:
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%0 = mul nsw i8 16, %v
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%1 = mul nsw i8 0, %0
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%2 = mul nsw i8 1, %1
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ret i8 %2
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}
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