diff options
Diffstat (limited to 'lib/Target/X86/X86CallingConv.td')
| -rw-r--r-- | lib/Target/X86/X86CallingConv.td | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/lib/Target/X86/X86CallingConv.td b/lib/Target/X86/X86CallingConv.td index b240742..aa97b8b 100644 --- a/lib/Target/X86/X86CallingConv.td +++ b/lib/Target/X86/X86CallingConv.td @@ -29,10 +29,13 @@ def RetCC_X86Common : CallingConv<[ // up in AX and AH, which overlap. Front-ends wishing to conform to the ABI // for functions that return two i8 values are currently expected to pack the // values into an i16 (which uses AX, and thus AL:AH). - CCIfType<[i8] , CCAssignToReg<[AL, DL]>>, - CCIfType<[i16], CCAssignToReg<[AX, DX]>>, - CCIfType<[i32], CCAssignToReg<[EAX, EDX]>>, - CCIfType<[i64], CCAssignToReg<[RAX, RDX]>>, + // + // For code that doesn't care about the ABI, we allow returning more than two + // integer values in registers. + CCIfType<[i8] , CCAssignToReg<[AL, DL, CL]>>, + CCIfType<[i16], CCAssignToReg<[AX, DX, CX]>>, + CCIfType<[i32], CCAssignToReg<[EAX, EDX, ECX]>>, + CCIfType<[i64], CCAssignToReg<[RAX, RDX, RCX, R11]>>, // Vector types are returned in XMM0 and XMM1, when they fit. XMM2 and XMM3 // can only be used by ABI non-compliant code. If the target doesn't have XMM |