6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-07-20 10:30:03 +00:00
Code Issues Projects Releases Wiki Activity

Mark all PPC comparison instructions as not having side effects

Browse Source 
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
This commit is contained in:
Hal Finkel 2013-04-15 02:37:46 +00:00
parent fb6fe0aea2
commit 00e86ad167
2 changed files with 28 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
lib/Target/PowerPC/PPCInstr64Bit.td
View File

@ -451,14 +451,16 @@ defm MULHDU : XOForm_1r<31, 9, 0, (outs G8RC:$rT), (ins G8RC:$rA, G8RC:$rB),
}
} // Interpretation64Bit
def CMPD : XForm_16_ext<31, 0, (outs CRRC:$crD), (ins G8RC:$rA, G8RC:$rB),
"cmpd $crD, $rA, $rB", IntCompare>, isPPC64;
def CMPLD : XForm_16_ext<31, 32, (outs CRRC:$crD), (ins G8RC:$rA, G8RC:$rB),
"cmpld $crD, $rA, $rB", IntCompare>, isPPC64;
def CMPDI : DForm_5_ext<11, (outs CRRC:$crD), (ins G8RC:$rA, s16imm:$imm),
"cmpdi $crD, $rA, $imm", IntCompare>, isPPC64;
def CMPLDI : DForm_6_ext<10, (outs CRRC:$dst), (ins G8RC:$src1, u16imm:$src2),
"cmpldi $dst, $src1, $src2", IntCompare>, isPPC64;
let isCompare = 1, neverHasSideEffects = 1 in {
def CMPD : XForm_16_ext<31, 0, (outs CRRC:$crD), (ins G8RC:$rA, G8RC:$rB),
"cmpd $crD, $rA, $rB", IntCompare>, isPPC64;
def CMPLD : XForm_16_ext<31, 32, (outs CRRC:$crD), (ins G8RC:$rA, G8RC:$rB),
"cmpld $crD, $rA, $rB", IntCompare>, isPPC64;
def CMPDI : DForm_5_ext<11, (outs CRRC:$crD), (ins G8RC:$rA, s16imm:$imm),
"cmpdi $crD, $rA, $imm", IntCompare>, isPPC64;
def CMPLDI : DForm_6_ext<10, (outs CRRC:$dst), (ins G8RC:$src1, u16imm:$src2),
"cmpldi $dst, $src1, $src2", IntCompare>, isPPC64;
}
let neverHasSideEffects = 1 in {
defm SLD : XForm_6r<31, 27, (outs G8RC:$rA), (ins G8RC:$rS, GPRC:$rB),

30
lib/Target/PowerPC/PPCInstrInfo.td
View File

@ -1318,10 +1318,12 @@ def XORIS : DForm_4<27, (outs GPRC:$dst), (ins GPRC:$src1, u16imm:$src2),
[(set i32:$dst, (xor i32:$src1, imm16ShiftedZExt:$src2))]>;
def NOP : DForm_4_zero<24, (outs), (ins), "nop", IntSimple,
[]>;
def CMPWI : DForm_5_ext<11, (outs CRRC:$crD), (ins GPRC:$rA, s16imm:$imm),
"cmpwi $crD, $rA, $imm", IntCompare>;
def CMPLWI : DForm_6_ext<10, (outs CRRC:$dst), (ins GPRC:$src1, u16imm:$src2),
"cmplwi $dst, $src1, $src2", IntCompare>;
let isCompare = 1, neverHasSideEffects = 1 in {
def CMPWI : DForm_5_ext<11, (outs CRRC:$crD), (ins GPRC:$rA, s16imm:$imm),
"cmpwi $crD, $rA, $imm", IntCompare>;
def CMPLWI : DForm_6_ext<10, (outs CRRC:$dst), (ins GPRC:$src1, u16imm:$src2),
"cmplwi $dst, $src1, $src2", IntCompare>;
}
}
let PPC970_Unit = 1, neverHasSideEffects = 1 in { // FXU Operations.
@ -1375,18 +1377,22 @@ defm EXTSH : XForm_11r<31, 922, (outs GPRC:$rA), (ins GPRC:$rS),
"extsh", "$rA, $rS", IntSimple,
[(set i32:$rA, (sext_inreg i32:$rS, i16))]>;
}
def CMPW : XForm_16_ext<31, 0, (outs CRRC:$crD), (ins GPRC:$rA, GPRC:$rB),
"cmpw $crD, $rA, $rB", IntCompare>;
def CMPLW : XForm_16_ext<31, 32, (outs CRRC:$crD), (ins GPRC:$rA, GPRC:$rB),
"cmplw $crD, $rA, $rB", IntCompare>;
let isCompare = 1, neverHasSideEffects = 1 in {
def CMPW : XForm_16_ext<31, 0, (outs CRRC:$crD), (ins GPRC:$rA, GPRC:$rB),
"cmpw $crD, $rA, $rB", IntCompare>;
def CMPLW : XForm_16_ext<31, 32, (outs CRRC:$crD), (ins GPRC:$rA, GPRC:$rB),
"cmplw $crD, $rA, $rB", IntCompare>;
}
}
let PPC970_Unit = 3 in { // FPU Operations.
//def FCMPO : XForm_17<63, 32, (outs CRRC:$crD), (ins FPRC:$fA, FPRC:$fB),
// "fcmpo $crD, $fA, $fB", FPCompare>;
def FCMPUS : XForm_17<63, 0, (outs CRRC:$crD), (ins F4RC:$fA, F4RC:$fB),
"fcmpu $crD, $fA, $fB", FPCompare>;
def FCMPUD : XForm_17<63, 0, (outs CRRC:$crD), (ins F8RC:$fA, F8RC:$fB),
"fcmpu $crD, $fA, $fB", FPCompare>;
let isCompare = 1, neverHasSideEffects = 1 in {
def FCMPUS : XForm_17<63, 0, (outs CRRC:$crD), (ins F4RC:$fA, F4RC:$fB),
"fcmpu $crD, $fA, $fB", FPCompare>;
def FCMPUD : XForm_17<63, 0, (outs CRRC:$crD), (ins F8RC:$fA, F8RC:$fB),
"fcmpu $crD, $fA, $fB", FPCompare>;
}
let Uses = [RM] in {
let neverHasSideEffects = 1 in {