diff options
Diffstat (limited to 'lib/Target/Sparc/SparcCallingConv.td')
| -rw-r--r-- | lib/Target/Sparc/SparcCallingConv.td | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/lib/Target/Sparc/SparcCallingConv.td b/lib/Target/Sparc/SparcCallingConv.td index acd4ec21de..dfaaabf344 100644 --- a/lib/Target/Sparc/SparcCallingConv.td +++ b/lib/Target/Sparc/SparcCallingConv.td @@ -103,7 +103,7 @@ def RetCC_Sparc32 : CallingConv<[ // Function return values are passed exactly like function arguments, except a // struct up to 32 bytes in size can be returned in registers. -// Function arguments AND return values. +// Function arguments AND most return values. def CC_Sparc64 : CallingConv<[ // The frontend uses the inreg flag to indicate i32 and float arguments from // structs. These arguments are not promoted to 64 bits, but they can still @@ -118,6 +118,15 @@ def CC_Sparc64 : CallingConv<[ CCCustom<"CC_Sparc64_Full"> ]>; +def RetCC_Sparc64 : CallingConv<[ + // A single f32 return value always goes in %f0. The ABI doesn't specify what + // happens to multiple f32 return values outside a struct. + CCIfType<[f32], CCCustom<"CC_Sparc64_Half">>, + + // Otherwise, return values are passed exactly like arguments. + CCDelegateTo<CC_Sparc64> +]>; + // Callee-saved registers are handled by the register window mechanism. def CSR : CalleeSavedRegs<(add)> { let OtherPreserved = (add (sequence "I%u", 0, 7), |