llvm-6502/test/CodeGen/ARM/2011-04-15-AndVFlagPeepholeBug.ll
Cameron Zwarich b485de5d8c The AND instruction leaves the V flag unmodified, so it falls victim to the same
problem as all of the other instructions we fold with CMPs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129602 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-15 20:45:00 +00:00

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532 B
LLVM

; RUN: llc < %s -mtriple=thumbv7-apple-darwin10 | FileCheck %s
; CHECK: _f
; CHECK-NOT: ands
; CHECK: cmp
; CHECK: blxle _g
define i32 @f(i32 %a, i32 %b) nounwind ssp {
entry:
%and = and i32 %b, %a
%cmp = icmp slt i32 %and, 1
br i1 %cmp, label %if.then, label %if.end
if.then: ; preds = %entry
tail call void (...)* @g(i32 %a, i32 %b) nounwind
br label %if.end
if.end: ; preds = %if.then, %entry
ret i32 %and
}
declare void @g(...)