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3c8f7ac243
Summary: When trying to canonicalize negative constants out of multiplication expressions, we need to check that the constant is not INT_MIN which cannot be negated. Reviewers: mcrosier Reviewed By: mcrosier Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D7286 From: Mehdi Amini <mehdi.amini@apple.com> llvm-svn: 228872
14 lines
315 B
LLVM
14 lines
315 B
LLVM
; RUN: opt < %s -reassociate -dce -S | FileCheck %s
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; MIN_INT cannot be negated during reassociation
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define i32 @minint(i32 %i) {
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; CHECK: %mul = mul i32 %i, -2147483648
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; CHECK-NEXT: %add = add i32 %mul, 1
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; CHECK-NEXT: ret i32 %add
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%mul = mul i32 %i, -2147483648
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%add = add i32 %mul, 1
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ret i32 %add
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}
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