From 077cee586eda8b0edcca1ff07e823104eff718e7 Mon Sep 17 00:00:00 2001 From: Pawel Wodnicki Date: Mon, 26 Nov 2012 16:49:56 +0000 Subject: Merging r168186: into the 3.2 release branch. InstructionSimplify should be able to simplify A+B==B+A to 'true' but wasn't due to the same logic bug that caused PR14361. git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_32@168593 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Analysis/InstructionSimplify.cpp | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) (limited to 'lib/Analysis/InstructionSimplify.cpp') diff --git a/lib/Analysis/InstructionSimplify.cpp b/lib/Analysis/InstructionSimplify.cpp index b3d62487fc..c24c18f807 100644 --- a/lib/Analysis/InstructionSimplify.cpp +++ b/lib/Analysis/InstructionSimplify.cpp @@ -2065,8 +2065,20 @@ static Value *SimplifyICmpInst(unsigned Predicate, Value *LHS, Value *RHS, if (A && C && (A == C || A == D || B == C || B == D) && NoLHSWrapProblem && NoRHSWrapProblem) { // Determine Y and Z in the form icmp (X+Y), (X+Z). - Value *Y = (A == C || A == D) ? B : A; - Value *Z = (C == A || C == B) ? D : C; + Value *Y, *Z; + if (A == C) { + Y = B; + Z = D; + } else if (A == D) { + Y = B; + Z = C; + } else if (B == C) { + Y = A; + Z = D; + } else if (B == D) { + Y = A; + Z = C; + } if (Value *V = SimplifyICmpInst(Pred, Y, Z, Q, MaxRecurse-1)) return V; } -- cgit v1.2.3