From ae528f65ba731e2e080822496ef36db950ffe1c1 Mon Sep 17 00:00:00 2001 From: Daniel Dunbar Date: Tue, 24 Aug 2010 19:24:18 +0000 Subject: [PATCH] MC/X86: Add custom hack for recognizing "imul $12, %eax" and friends. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111947 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/X86/AsmParser/X86AsmParser.cpp | 8 ++++++++ test/MC/AsmParser/X86/x86_instructions.s | 3 +++ 2 files changed, 11 insertions(+) diff --git a/lib/Target/X86/AsmParser/X86AsmParser.cpp b/lib/Target/X86/AsmParser/X86AsmParser.cpp index 204ccf77a75..3f10b8e2f58 100644 --- a/lib/Target/X86/AsmParser/X86AsmParser.cpp +++ b/lib/Target/X86/AsmParser/X86AsmParser.cpp @@ -826,6 +826,14 @@ ParseInstruction(StringRef Name, SMLoc NameLoc, Operands.erase(Operands.begin() + 2); } + // FIXME: Hack to handle "imul A, B" which is an alias for "imul A, B, B". + if (Name.startswith("imul") && Operands.size() == 3 && + static_cast(Operands.back())->isReg()) { + X86Operand *Op = static_cast(Operands.back()); + Operands.push_back(X86Operand::CreateReg(Op->getReg(), Op->getStartLoc(), + Op->getEndLoc())); + } + return false; } diff --git a/test/MC/AsmParser/X86/x86_instructions.s b/test/MC/AsmParser/X86/x86_instructions.s index 8adcc9e0cdf..eed69e07d37 100644 --- a/test/MC/AsmParser/X86/x86_instructions.s +++ b/test/MC/AsmParser/X86/x86_instructions.s @@ -158,3 +158,6 @@ INT3 // CHECK: movaps %xmm3, (%esi) // CHECK-STDERR: warning: scale factor without index register is ignored movaps %xmm3, (%esi, 2) + +// CHECK: imull $12, %eax, %eax +imul $12, %eax