From 34e37f0cc7832ef3ff43e2d0476dc5d23373a51d Mon Sep 17 00:00:00 2001 From: Sriram Murali Date: Thu, 10 Oct 2013 20:24:53 +0000 Subject: [PATCH] test commit - fix comments on vector type legalization llvm-svn: 192389 --- llvm/include/llvm/Target/TargetLowering.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/llvm/include/llvm/Target/TargetLowering.h b/llvm/include/llvm/Target/TargetLowering.h index cd95a732234f..0130e07c49f2 100644 --- a/llvm/include/llvm/Target/TargetLowering.h +++ b/llvm/include/llvm/Target/TargetLowering.h @@ -1473,10 +1473,12 @@ public: if (NumElts == 1) return LegalizeKind(TypeScalarizeVector, EltVT); - // Try to widen vector elements until a legal type is found. + // Try to widen vector elements until the element type is a power of two and + // promote it to a legal type later on, for example: + // <3 x i8> -> <4 x i8> -> <4 x i32> if (EltVT.isInteger()) { // Vectors with a number of elements that is not a power of two are always - // widened, for example <3 x float> -> <4 x float>. + // widened, for example <3 x i8> -> <4 x i8>. if (!VT.isPow2VectorType()) { NumElts = (unsigned)NextPowerOf2(NumElts); EVT NVT = EVT::getVectorVT(Context, EltVT, NumElts); -- GitLab