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[PowerPC] Add DFP compare instructions.

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This patch adds the DFP compare instructions:
dcmpu, dcmpuq, dcmpo, dcmpoq

Reviewed By: amyk

Differential Revision: https://reviews.llvm.org/D150899
This commit is contained in:
Stefan Pintilie 2023-06-02 12:09:14 -04:00
parent 5b77e752dc
commit 94cefe41e6
3 changed files with 45 additions and 0 deletions
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21
llvm/lib/Target/PowerPC/PPCInstrDFP.td
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@ -13,11 +13,15 @@
// We provide no scheduling info for the DFP instructions.
// While they are not pseudo instructions we don't intend on scheduling them.
let hasNoSchedulingInfo = 1 in {
let mayRaiseFPException = 1, hasSideEffects = 0 in {
let isCommutable = 1 in {
defm DADD : XForm_28r<59, 2, (outs f8rc:$RST), (ins f8rc:$RA, f8rc:$RB),
"dadd", "$RST, $RA, $RB", IIC_FPGeneral, []>;
defm DADDQ : XForm_28r<63, 2, (outs fpairrc:$RST), (ins fpairrc:$RA, fpairrc:$RB),
"daddq", "$RST, $RA, $RB", IIC_FPGeneral, []>;
}
defm DSUB : XForm_28r<59, 514, (outs f8rc:$RST), (ins f8rc:$RA, f8rc:$RB),
"dsub", "$RST, $RA, $RB", IIC_FPGeneral, []>;
@ -25,16 +29,33 @@ defm DSUB : XForm_28r<59, 514, (outs f8rc:$RST), (ins f8rc:$RA, f8rc:$RB),
defm DSUBQ : XForm_28r<63, 514, (outs fpairrc:$RST), (ins fpairrc:$RA, fpairrc:$RB),
"dsubq", "$RST, $RA, $RB", IIC_FPGeneral, []>;
let isCommutable = 1 in {
defm DMUL : XForm_28r<59, 34, (outs f8rc:$RST), (ins f8rc:$RA, f8rc:$RB),
"dmul", "$RST, $RA, $RB", IIC_FPGeneral, []>;
defm DMULQ : XForm_28r<63, 34, (outs fpairrc:$RST), (ins fpairrc:$RA, fpairrc:$RB),
"dmulq", "$RST, $RA, $RB", IIC_FPGeneral, []>;
}
defm DDIV : XForm_28r<59, 546, (outs f8rc:$RST), (ins f8rc:$RA, f8rc:$RB),
"ddiv", "$RST, $RA, $RB", IIC_FPGeneral, []>;
defm DDIVQ : XForm_28r<63, 546, (outs fpairrc:$RST), (ins fpairrc:$RA, fpairrc:$RB),
"ddivq", "$RST, $RA, $RB", IIC_FPGeneral, []>;
let isCompare = 1 in {
def DCMPU : XForm_17<59, 642, (outs crrc:$BF), (ins f8rc:$RA, f8rc:$RB),
"dcmpu $BF, $RA, $RB", IIC_FPCompare>;
def DCMPUQ : XForm_17<63, 642, (outs crrc:$BF), (ins fpairrc:$RA, fpairrc:$RB),
"dcmpuq $BF, $RA, $RB", IIC_FPCompare>;
def DCMPO : XForm_17<59, 130, (outs crrc:$BF), (ins f8rc:$RA, f8rc:$RB),
"dcmpo $BF, $RA, $RB", IIC_FPCompare>;
def DCMPOQ : XForm_17<63, 130, (outs crrc:$BF), (ins fpairrc:$RA, fpairrc:$RB),
"dcmpoq $BF, $RA, $RB", IIC_FPCompare>;
}
}
}

12
llvm/test/MC/Disassembler/PowerPC/ppc64-encoding-dfp.txt
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@ -47,3 +47,15 @@
# CHECK: ddivq. 2, 6, 4
0xfc 0x46 0x24 0x45
# CHECK: dcmpu 2, 6, 4
0xed 0x06 0x25 0x04
# CHECK: dcmpuq 2, 6, 4
0xfd 0x06 0x25 0x04
# CHECK: dcmpo 2, 6, 4
0xed 0x06 0x21 0x04
# CHECK: dcmpoq 2, 6, 4
0xfd 0x06 0x21 0x04

12
llvm/test/MC/PowerPC/ppc64-encoding-dfp.s
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@ -50,3 +50,15 @@
# CHECK-BE: ddivq. 2, 6, 4 # encoding: [0xfc,0x46,0x24,0x45]
# CHECK-LE: ddivq. 2, 6, 4 # encoding: [0x45,0x24,0x46,0xfc]
ddivq. 2, 6, 4
# CHECK-BE: dcmpu 2, 6, 4 # encoding: [0xed,0x06,0x25,0x04]
# CHECK-LE: dcmpu 2, 6, 4 # encoding: [0x04,0x25,0x06,0xed]
dcmpu 2, 6, 4
# CHECK-BE: dcmpuq 2, 6, 4 # encoding: [0xfd,0x06,0x25,0x04]
# CHECK-LE: dcmpuq 2, 6, 4 # encoding: [0x04,0x25,0x06,0xfd]
dcmpuq 2, 6, 4
# CHECK-BE: dcmpo 2, 6, 4 # encoding: [0xed,0x06,0x21,0x04]
# CHECK-LE: dcmpo 2, 6, 4 # encoding: [0x04,0x21,0x06,0xed]
dcmpo 2, 6, 4
# CHECK-BE: dcmpoq 2, 6, 4 # encoding: [0xfd,0x06,0x21,0x04]
# CHECK-LE: dcmpoq 2, 6, 4 # encoding: [0x04,0x21,0x06,0xfd]
dcmpoq 2, 6, 4