[PPC] Add Defs = [CARRY] to MIR SRADI_32

[Carrot]

Summary

MIR SRADI uses instruction template XSForm_1rc which declares Defs = [CARRY]. But MIR SRADI_32 uses instruction template XSForm_1, and it doesn't declare such implicit definition. With patch D33720 it causes wrong code generation for perl.

This patch adds the implicit definition.

[nemanjai]

Carrot, thank you so much for working on this and I'm really sorry for the omission when we defined the instruction. This implicit def certainly needs to be set on the instruction.

LGTM.

llvm/trunk/lib/Target/PowerPC/PPCInstr64Bit.td

 def EXTSW_32 : XForm_11<31, 986, (outs gprc:$rA), (ins gprc:$rS),
                         "extsw $rA, $rS", IIC_IntSimple,
                         []>, isPPC64;
 
 defm SRADI  : XSForm_1rc<31, 413, (outs g8rc:$rA), (ins g8rc:$rS, u6imm:$SH),
                          "sradi", "$rA, $rS, $SH", IIC_IntRotateDI,
                          [(set i64:$rA, (sra i64:$rS, (i32 imm:$SH)))]>, isPPC64;
 // For fast-isel:
-let isCodeGenOnly = 1 in
+let isCodeGenOnly = 1, Defs = [CARRY] in
 def SRADI_32  : XSForm_1<31, 413, (outs gprc:$rA), (ins gprc:$rS, u6imm:$SH),
                          "sradi $rA, $rS, $SH", IIC_IntRotateDI, []>, isPPC64;
 
 defm CNTLZD : XForm_11r<31,  58, (outs g8rc:$rA), (ins g8rc:$rS),
                         "cntlzd", "$rA, $rS", IIC_IntGeneral,
                         [(set i64:$rA, (ctlz i64:$rS))]>;
 defm CNTTZD : XForm_11r<31, 570, (outs g8rc:$rA), (ins g8rc:$rS),
                         "cnttzd", "$rA, $rS", IIC_IntGeneral,