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f27bf7435a
The dream of a unified check-line auto-generator for all phases of compilation is dead. The llc script has already diverged to be better at its goal, so having 2 scripts that do almost the same thing is just causing confusion for newcomers. I plan to fix up more x86 tests in a next commit. We can rip out the llc ability in update_test_checks.py after that. llvm-svn: 305202
25 lines
703 B
LLVM
25 lines
703 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=i386-apple-darwin < %s | FileCheck %s
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; PR30841: https://llvm.org/bugs/show_bug.cgi?id=30841
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; Demanded bits analysis must disable nsw/nuw when it makes a
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; simplification to add/sub such as in this case.
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define i8 @PR30841(i64 %argc) {
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; CHECK-LABEL: PR30841:
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; CHECK: ## BB#0: ## %entry
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; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
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; CHECK-NEXT: negl %eax
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; CHECK-NEXT: ## kill: %AL<def> %AL<kill> %EAX<kill>
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; CHECK-NEXT: retl
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entry:
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%or = or i64 %argc, -4294967296
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br label %end
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end:
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%neg = sub nuw nsw i64 -4294967296, %argc
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%trunc = trunc i64 %neg to i8
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ret i8 %trunc
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}
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