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add new CC_X86_32_FastCall calling conv, which describes fastcall on win32.

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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
This commit is contained in:
Chris Lattner 2007-02-28 06:20:01 +00:00
parent fcf1a3de7a
commit 011bcc8cdd
1 changed files with 32 additions and 13 deletions
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45
lib/Target/X86/X86CallingConv.td
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@ -111,6 +111,25 @@ def CC_X86_64_C : CallingConv<[
// X86 C Calling Convention
//===----------------------------------------------------------------------===//
/// CC_X86_32_Common - In all X86-32 calling conventions, extra integers and FP
/// values are spilled on the stack, and the first 4 vector values go in XMM
/// regs.
def CC_X86_32_Common : CallingConv<[
// Integer/Float values get stored in stack slots that are 4 bytes in
// size and 4-byte aligned.
CCIfType<[i32, f32], CCAssignToStack<4, 4>>,
// Doubles get 8-byte slots that are 4-byte aligned.
CCIfType<[f64], CCAssignToStack<8, 4>>,
// The first 4 vector arguments are passed in XMM registers.
CCIfType<[v16i8, v8i16, v4i32, v2i64, v4f32, v2f64],
CCAssignToReg<[XMM0, XMM1, XMM2, XMM3]>>,
// Other vectors get 16-byte stack slots that are 16-byte aligned.
CCIfType<[v16i8, v8i16, v4i32, v2i64, v4f32, v2f64], CCAssignToStack<16, 16>>
]>;
def CC_X86_32_C : CallingConv<[
// Promote i8/i16 arguments to i32.
CCIfType<[i8, i16], CCPromoteToType<i32>>,
@ -119,20 +138,20 @@ def CC_X86_32_C : CallingConv<[
// registers.
CCIfInReg<CCIfType<[i32], CCAssignToReg<[EAX, EDX, ECX]>>>,
// Other Integer/Float values get stored in stack slots that are 4 bytes in
// size and 4-byte aligned.
CCIfType<[i32, f32], CCAssignToStack<4, 4>>,
// Doubles get 8-byte slots that are 4-byte aligned.
CCIfType<[f64], CCAssignToStack<8, 4>>,
// The first 4 Vector arguments are passed in XMM registers.
CCIfType<[v16i8, v8i16, v4i32, v2i64, v4f32, v2f64],
CCAssignToReg<[XMM0, XMM1, XMM2, XMM3]>>,
// Other vectors get 16-byte stack slots that are 16-byte aligned.
CCIfType<[v16i8, v8i16, v4i32, v2i64, v4f32, v2f64], CCAssignToStack<16, 16>>
// Otherwise, same as everything else.
CCDelegateTo<CC_X86_32_Common>
]>;
def CC_X86_32_FastCall : CallingConv<[
// Promote i8/i16 arguments to i32.
CCIfType<[i8, i16], CCPromoteToType<i32>>,
// The first 2 integer arguments are passed in ECX/EDX
CCIfInReg<CCIfType<[i32], CCAssignToReg<[ECX, EDX]>>>,
// Otherwise, same as everything else.
CCDelegateTo<CC_X86_32_Common>
]>;