From 45874e67a1efc99ccd77492025906dd561d50e7f Mon Sep 17 00:00:00 2001 From: Andrea Di Biagio Date: Fri, 2 Oct 2015 13:06:19 +0000 Subject: Revert: [FastISel][x86] Teach how to select SSE2/AVX bitcasts between 128/256-bit vector types. r249121 caused a Clang test failure (avx2-buitins.c). Revert r249121 while I keep investigating on the reason why that test failed. llvm-svn: 249124 --- llvm/lib/Target/X86/X86FastISel.cpp | 24 ------------------------ 1 file changed, 24 deletions(-) (limited to 'llvm/lib/Target/X86/X86FastISel.cpp') diff --git a/llvm/lib/Target/X86/X86FastISel.cpp b/llvm/lib/Target/X86/X86FastISel.cpp index 17704da91c2..5eabd7a756f 100644 --- a/llvm/lib/Target/X86/X86FastISel.cpp +++ b/llvm/lib/Target/X86/X86FastISel.cpp @@ -3234,30 +3234,6 @@ X86FastISel::fastSelectInstruction(const Instruction *I) { updateValueMap(I, Reg); return true; } - case Instruction::BitCast: { - // Select SSE2/AVX bitcasts between 128/256 bit vector types. - if (!Subtarget->hasSSE2()) - return false; - - EVT SrcVT = TLI.getValueType(DL, I->getOperand(0)->getType()); - EVT DstVT = TLI.getValueType(DL, I->getType()); - - if (!SrcVT.isSimple() || !DstVT.isSimple()) - return false; - - if (!SrcVT.is128BitVector() && - !(Subtarget->hasAVX() && SrcVT.is256BitVector())) - return false; - - unsigned Reg = getRegForValue(I->getOperand(0)); - if (Reg == 0) - return false; - - // No instruction is needed for conversion. Reuse the register used by - // the fist operand. - updateValueMap(I, Reg); - return true; - } } return false; -- cgit v1.2.3