diff options
| author | Chris Lattner <sabre@nondot.org> | 2005-06-17 03:59:17 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2005-06-17 03:59:17 +0000 |
| commit | e88b7533be3c0e6072b3a3d672bae464f33b090a (patch) | |
| tree | 24e9005882997c54a69e4f376c1d39a8fda88f6d /lib/Transforms | |
| parent | 32545518f24eef49cc307073a582d0ddc6b2f843 (diff) | |
This is not true: (X != 13 | X < 15) -> X < 15
It is actually always true. This fixes PR586 and
Transforms/InstCombine/2005-06-16-SetCCOrSetCCMiscompile.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22236 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms')
| -rw-r--r-- | lib/Transforms/Scalar/InstructionCombining.cpp | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp index d2827af3d7..83998c8bc2 100644 --- a/lib/Transforms/Scalar/InstructionCombining.cpp +++ b/lib/Transforms/Scalar/InstructionCombining.cpp @@ -1967,12 +1967,11 @@ Instruction *InstCombiner::visitOr(BinaryOperator &I) { case Instruction::SetNE: switch (RHSCC) { default: assert(0 && "Unknown integer condition code!"); - case Instruction::SetLT: // (X != 13 | X < 15) -> X < 15 - return ReplaceInstUsesWith(I, RHS); case Instruction::SetEQ: // (X != 13 | X == 15) -> X != 13 case Instruction::SetGT: // (X != 13 | X > 15) -> X != 13 return ReplaceInstUsesWith(I, LHS); case Instruction::SetNE: // (X != 13 | X != 15) -> true + case Instruction::SetLT: // (X != 13 | X < 15) -> true return ReplaceInstUsesWith(I, ConstantBool::True); } break; |