From eb733d2a1b8683f5cb3558160cb03a442f46e46e Mon Sep 17 00:00:00 2001 From: Benjamin Kramer Date: Fri, 19 Apr 2013 16:56:24 +0000 Subject: [PATCH] ConstantFolding: ComputeMaskedBits wants the scalar size for vectors. Fixes PR15791. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179859 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Analysis/ConstantFolding.cpp | 2 +- .../InstSimplify/2013-04-19-ConstantFoldingCrash.ll | 9 +++++++++ 2 files changed, 10 insertions(+), 1 deletion(-) create mode 100644 test/Transforms/InstSimplify/2013-04-19-ConstantFoldingCrash.ll diff --git a/lib/Analysis/ConstantFolding.cpp b/lib/Analysis/ConstantFolding.cpp index b5286e8f29d..bc0dffc4736 100644 --- a/lib/Analysis/ConstantFolding.cpp +++ b/lib/Analysis/ConstantFolding.cpp @@ -551,7 +551,7 @@ static Constant *SymbolicallyEvaluateBinop(unsigned Opc, Constant *Op0, if (Opc == Instruction::And && DL) { - unsigned BitWidth = DL->getTypeSizeInBits(Op0->getType()); + unsigned BitWidth = DL->getTypeSizeInBits(Op0->getType()->getScalarType()); APInt KnownZero0(BitWidth, 0), KnownOne0(BitWidth, 0); APInt KnownZero1(BitWidth, 0), KnownOne1(BitWidth, 0); ComputeMaskedBits(Op0, KnownZero0, KnownOne0, DL); diff --git a/test/Transforms/InstSimplify/2013-04-19-ConstantFoldingCrash.ll b/test/Transforms/InstSimplify/2013-04-19-ConstantFoldingCrash.ll new file mode 100644 index 00000000000..164751784a6 --- /dev/null +++ b/test/Transforms/InstSimplify/2013-04-19-ConstantFoldingCrash.ll @@ -0,0 +1,9 @@ +; RUN: opt < %s -instsimplify + +target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" + +; PR15791 +define <2 x i64> @test1() { + %a = and <2 x i64> undef, bitcast (<4 x i32> to <2 x i64>) + ret <2 x i64> %a +}