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add new CC_X86_32_FastCall calling conv, which describes fastcall on win32.
Factor out a CC_X86_32_Common convention, which is the part shared between ccc, stdcall and fastcall git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34732 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -111,6 +111,25 @@ def CC_X86_64_C : CallingConv<[
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// X86 C Calling Convention
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//===----------------------------------------------------------------------===//
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/// CC_X86_32_Common - In all X86-32 calling conventions, extra integers and FP
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/// values are spilled on the stack, and the first 4 vector values go in XMM
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/// regs.
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def CC_X86_32_Common : CallingConv<[
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// Integer/Float values get stored in stack slots that are 4 bytes in
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// size and 4-byte aligned.
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CCIfType<[i32, f32], CCAssignToStack<4, 4>>,
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// Doubles get 8-byte slots that are 4-byte aligned.
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CCIfType<[f64], CCAssignToStack<8, 4>>,
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// The first 4 vector arguments are passed in XMM registers.
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CCIfType<[v16i8, v8i16, v4i32, v2i64, v4f32, v2f64],
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CCAssignToReg<[XMM0, XMM1, XMM2, XMM3]>>,
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// Other vectors get 16-byte stack slots that are 16-byte aligned.
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CCIfType<[v16i8, v8i16, v4i32, v2i64, v4f32, v2f64], CCAssignToStack<16, 16>>
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]>;
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def CC_X86_32_C : CallingConv<[
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// Promote i8/i16 arguments to i32.
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CCIfType<[i8, i16], CCPromoteToType<i32>>,
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@ -119,20 +138,20 @@ def CC_X86_32_C : CallingConv<[
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// registers.
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CCIfInReg<CCIfType<[i32], CCAssignToReg<[EAX, EDX, ECX]>>>,
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// Other Integer/Float values get stored in stack slots that are 4 bytes in
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// size and 4-byte aligned.
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CCIfType<[i32, f32], CCAssignToStack<4, 4>>,
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// Doubles get 8-byte slots that are 4-byte aligned.
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CCIfType<[f64], CCAssignToStack<8, 4>>,
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// The first 4 Vector arguments are passed in XMM registers.
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CCIfType<[v16i8, v8i16, v4i32, v2i64, v4f32, v2f64],
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CCAssignToReg<[XMM0, XMM1, XMM2, XMM3]>>,
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// Other vectors get 16-byte stack slots that are 16-byte aligned.
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CCIfType<[v16i8, v8i16, v4i32, v2i64, v4f32, v2f64], CCAssignToStack<16, 16>>
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// Otherwise, same as everything else.
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CCDelegateTo<CC_X86_32_Common>
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]>;
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def CC_X86_32_FastCall : CallingConv<[
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// Promote i8/i16 arguments to i32.
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CCIfType<[i8, i16], CCPromoteToType<i32>>,
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// The first 2 integer arguments are passed in ECX/EDX
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CCIfInReg<CCIfType<[i32], CCAssignToReg<[ECX, EDX]>>>,
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// Otherwise, same as everything else.
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CCDelegateTo<CC_X86_32_Common>
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]>;
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