diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/X86/X86CallingConv.td | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86CallingConv.td b/llvm/lib/Target/X86/X86CallingConv.td index 549eb9b9a20..e720b0b3b22 100644 --- a/llvm/lib/Target/X86/X86CallingConv.td +++ b/llvm/lib/Target/X86/X86CallingConv.td @@ -352,6 +352,12 @@ def CC_X86_32_FastCC : CallingConv<[ // The first 2 integer arguments are passed in ECX/EDX CCIfType<[i32], CCAssignToReg<[ECX, EDX]>>, + // The first 3 float or double arguments, if the call is not a vararg + // call and if SSE2 is available, are passed in SSE registers. + CCIfNotVarArg<CCIfType<[f32,f64], + CCIfSubtarget<"hasSSE2()", + CCAssignToReg<[XMM0,XMM1,XMM2]>>>>, + // Doubles get 8-byte slots that are 8-byte aligned. CCIfType<[f64], CCAssignToStack<8, 8>>, |
