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Mark all PPC comparison instructions as not having side effects
Now that the CR spilling issues have been resolved, we can remove the unmodeled-side-effect attributes from the comparison instructions (and also mark them as isCompare). By allowing these, by default, to have unmodeled side effects, we were hiding problems with CR spilling; but everything seems much happier now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179502 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -451,14 +451,16 @@ defm MULHDU : XOForm_1r<31, 9, 0, (outs G8RC:$rT), (ins G8RC:$rA, G8RC:$rB),
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}
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} // Interpretation64Bit
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def CMPD : XForm_16_ext<31, 0, (outs CRRC:$crD), (ins G8RC:$rA, G8RC:$rB),
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"cmpd $crD, $rA, $rB", IntCompare>, isPPC64;
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def CMPLD : XForm_16_ext<31, 32, (outs CRRC:$crD), (ins G8RC:$rA, G8RC:$rB),
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"cmpld $crD, $rA, $rB", IntCompare>, isPPC64;
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def CMPDI : DForm_5_ext<11, (outs CRRC:$crD), (ins G8RC:$rA, s16imm:$imm),
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"cmpdi $crD, $rA, $imm", IntCompare>, isPPC64;
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def CMPLDI : DForm_6_ext<10, (outs CRRC:$dst), (ins G8RC:$src1, u16imm:$src2),
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"cmpldi $dst, $src1, $src2", IntCompare>, isPPC64;
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let isCompare = 1, neverHasSideEffects = 1 in {
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def CMPD : XForm_16_ext<31, 0, (outs CRRC:$crD), (ins G8RC:$rA, G8RC:$rB),
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"cmpd $crD, $rA, $rB", IntCompare>, isPPC64;
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def CMPLD : XForm_16_ext<31, 32, (outs CRRC:$crD), (ins G8RC:$rA, G8RC:$rB),
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"cmpld $crD, $rA, $rB", IntCompare>, isPPC64;
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def CMPDI : DForm_5_ext<11, (outs CRRC:$crD), (ins G8RC:$rA, s16imm:$imm),
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"cmpdi $crD, $rA, $imm", IntCompare>, isPPC64;
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def CMPLDI : DForm_6_ext<10, (outs CRRC:$dst), (ins G8RC:$src1, u16imm:$src2),
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"cmpldi $dst, $src1, $src2", IntCompare>, isPPC64;
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}
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let neverHasSideEffects = 1 in {
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defm SLD : XForm_6r<31, 27, (outs G8RC:$rA), (ins G8RC:$rS, GPRC:$rB),
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@ -1318,10 +1318,12 @@ def XORIS : DForm_4<27, (outs GPRC:$dst), (ins GPRC:$src1, u16imm:$src2),
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[(set i32:$dst, (xor i32:$src1, imm16ShiftedZExt:$src2))]>;
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def NOP : DForm_4_zero<24, (outs), (ins), "nop", IntSimple,
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[]>;
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def CMPWI : DForm_5_ext<11, (outs CRRC:$crD), (ins GPRC:$rA, s16imm:$imm),
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"cmpwi $crD, $rA, $imm", IntCompare>;
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def CMPLWI : DForm_6_ext<10, (outs CRRC:$dst), (ins GPRC:$src1, u16imm:$src2),
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"cmplwi $dst, $src1, $src2", IntCompare>;
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let isCompare = 1, neverHasSideEffects = 1 in {
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def CMPWI : DForm_5_ext<11, (outs CRRC:$crD), (ins GPRC:$rA, s16imm:$imm),
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"cmpwi $crD, $rA, $imm", IntCompare>;
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def CMPLWI : DForm_6_ext<10, (outs CRRC:$dst), (ins GPRC:$src1, u16imm:$src2),
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"cmplwi $dst, $src1, $src2", IntCompare>;
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}
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}
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let PPC970_Unit = 1, neverHasSideEffects = 1 in { // FXU Operations.
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@ -1375,18 +1377,22 @@ defm EXTSH : XForm_11r<31, 922, (outs GPRC:$rA), (ins GPRC:$rS),
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"extsh", "$rA, $rS", IntSimple,
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[(set i32:$rA, (sext_inreg i32:$rS, i16))]>;
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}
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def CMPW : XForm_16_ext<31, 0, (outs CRRC:$crD), (ins GPRC:$rA, GPRC:$rB),
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"cmpw $crD, $rA, $rB", IntCompare>;
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def CMPLW : XForm_16_ext<31, 32, (outs CRRC:$crD), (ins GPRC:$rA, GPRC:$rB),
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"cmplw $crD, $rA, $rB", IntCompare>;
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let isCompare = 1, neverHasSideEffects = 1 in {
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def CMPW : XForm_16_ext<31, 0, (outs CRRC:$crD), (ins GPRC:$rA, GPRC:$rB),
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"cmpw $crD, $rA, $rB", IntCompare>;
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def CMPLW : XForm_16_ext<31, 32, (outs CRRC:$crD), (ins GPRC:$rA, GPRC:$rB),
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"cmplw $crD, $rA, $rB", IntCompare>;
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}
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}
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let PPC970_Unit = 3 in { // FPU Operations.
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//def FCMPO : XForm_17<63, 32, (outs CRRC:$crD), (ins FPRC:$fA, FPRC:$fB),
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// "fcmpo $crD, $fA, $fB", FPCompare>;
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def FCMPUS : XForm_17<63, 0, (outs CRRC:$crD), (ins F4RC:$fA, F4RC:$fB),
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"fcmpu $crD, $fA, $fB", FPCompare>;
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def FCMPUD : XForm_17<63, 0, (outs CRRC:$crD), (ins F8RC:$fA, F8RC:$fB),
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"fcmpu $crD, $fA, $fB", FPCompare>;
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let isCompare = 1, neverHasSideEffects = 1 in {
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def FCMPUS : XForm_17<63, 0, (outs CRRC:$crD), (ins F4RC:$fA, F4RC:$fB),
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"fcmpu $crD, $fA, $fB", FPCompare>;
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def FCMPUD : XForm_17<63, 0, (outs CRRC:$crD), (ins F8RC:$fA, F8RC:$fB),
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"fcmpu $crD, $fA, $fB", FPCompare>;
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}
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let Uses = [RM] in {
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let neverHasSideEffects = 1 in {
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