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[Sparc]: Use cmp instruction instead of subcc to compare integers.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183463 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Venkatraman Govindaraju 2013-06-07 00:03:36 +00:00
parent 6a72c84b16
commit 01021a8b93
7 changed files with 36 additions and 34 deletions
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9
lib/Target/Sparc/SparcISelLowering.cpp
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@ -1575,9 +1575,7 @@ static SDValue LowerBR_CC(SDValue Op, SelectionDAG &DAG) {
// Get the condition flag.
SDValue CompareFlag;
if (LHS.getValueType().isInteger()) {
EVT VTs[] = { LHS.getValueType(), MVT::Glue };
SDValue Ops[2] = { LHS, RHS };
CompareFlag = DAG.getNode(SPISD::CMPICC, dl, VTs, Ops, 2).getValue(1);
CompareFlag = DAG.getNode(SPISD::CMPICC, dl, MVT::Glue, LHS, RHS);
if (SPCC == ~0U) SPCC = IntCondCCodeToICC(CC);
// 32-bit compares use the icc flags, 64-bit uses the xcc flags.
Opc = LHS.getValueType() == MVT::i32 ? SPISD::BRICC : SPISD::BRXCC;
@ -1605,10 +1603,7 @@ static SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG) {
SDValue CompareFlag;
if (LHS.getValueType().isInteger()) {
// subcc returns a value
EVT VTs[] = { LHS.getValueType(), MVT::Glue };
SDValue Ops[2] = { LHS, RHS };
CompareFlag = DAG.getNode(SPISD::CMPICC, dl, VTs, Ops, 2).getValue(1);
CompareFlag = DAG.getNode(SPISD::CMPICC, dl, MVT::Glue, LHS, RHS);
Opc = LHS.getValueType() == MVT::i32 ?
SPISD::SELECT_ICC : SPISD::SELECT_XCC;
if (SPCC == ~0U) SPCC = IntCondCCodeToICC(CC);

4
lib/Target/Sparc/SparcInstr64Bit.td
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@ -160,7 +160,7 @@ def : Pat<(sube i64:$a, i64:$b), (SUBXrr $a, $b)>;
def : Pat<(addc i64:$a, i64:$b), (ADDCCrr $a, $b)>;
def : Pat<(subc i64:$a, i64:$b), (SUBCCrr $a, $b)>;
def : Pat<(SPcmpicc i64:$a, i64:$b), (SUBCCrr $a, $b)>;
def : Pat<(SPcmpicc i64:$a, i64:$b), (CMPrr $a, $b)>;
// Register-immediate instructions.
@ -171,7 +171,7 @@ def : Pat<(xor i64:$a, (i64 simm13:$b)), (XORri $a, (as_i32imm $b))>;
def : Pat<(add i64:$a, (i64 simm13:$b)), (ADDri $a, (as_i32imm $b))>;
def : Pat<(sub i64:$a, (i64 simm13:$b)), (SUBri $a, (as_i32imm $b))>;
def : Pat<(SPcmpicc i64:$a, (i64 simm13:$b)), (SUBCCri $a, (as_i32imm $b))>;
def : Pat<(SPcmpicc i64:$a, (i64 simm13:$b)), (CMPri $a, (as_i32imm $b))>;
} // Predicates = [Is64Bit]

23
lib/Target/Sparc/SparcInstrInfo.td
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@ -89,6 +89,8 @@ def calltarget : Operand<i32>;
let PrintMethod = "printCCOperand" in
def CCOp : Operand<i32>;
def SDTSPcmpicc :
SDTypeProfile<0, 2, [SDTCisInt<0>, SDTCisSameAs<0, 1>]>;
def SDTSPcmpfcc :
SDTypeProfile<0, 2, [SDTCisFP<0>, SDTCisSameAs<0, 1>]>;
def SDTSPbrcc :
@ -100,7 +102,7 @@ SDTypeProfile<1, 1, [SDTCisVT<0, f32>, SDTCisFP<1>]>;
def SDTSPITOF :
SDTypeProfile<1, 1, [SDTCisFP<0>, SDTCisVT<1, f32>]>;
def SPcmpicc : SDNode<"SPISD::CMPICC", SDTIntBinOp, [SDNPOutGlue]>;
def SPcmpicc : SDNode<"SPISD::CMPICC", SDTSPcmpicc, [SDNPOutGlue]>;
def SPcmpfcc : SDNode<"SPISD::CMPFCC", SDTSPcmpfcc, [SDNPOutGlue]>;
def SPbricc : SDNode<"SPISD::BRICC", SDTSPbrcc, [SDNPHasChain, SDNPInGlue]>;
def SPbrxcc : SDNode<"SPISD::BRXCC", SDTSPbrcc, [SDNPHasChain, SDNPInGlue]>;
@ -476,8 +478,18 @@ defm SUB : F3_12 <"sub" , 0b000100, sub>;
let Uses = [ICC] in
defm SUBX : F3_12 <"subx" , 0b001100, sube>;
let Defs = [ICC] in
defm SUBCC : F3_12 <"subcc", 0b010100, SPcmpicc>;
let Defs = [ICC] in {
defm SUBCC : F3_12 <"subcc", 0b010100, subc>;
def CMPrr : F3_1<2, 0b010100,
(outs), (ins IntRegs:$b, IntRegs:$c),
"cmp $b, $c",
[(SPcmpicc i32:$b, i32:$c)]>;
def CMPri : F3_1<2, 0b010100,
(outs), (ins IntRegs:$b, i32imm:$c),
"cmp $b, $c",
[(SPcmpicc i32:$b, (i32 simm13:$c))]>;
}
let Uses = [ICC], Defs = [ICC] in
def SUBXCCrr: F3_1<2, 0b011100,
@ -795,11 +807,6 @@ def : Pat<(i32 simm13:$val),
def : Pat<(i32 imm:$val),
(ORri (SETHIi (HI22 imm:$val)), (LO10 imm:$val))>;
// subc
def : Pat<(subc i32:$b, i32:$c),
(SUBCCrr $b, $c)>;
def : Pat<(subc i32:$b, simm13:$val),
(SUBCCri $b, imm:$val)>;
// Global addresses, constant pool entries
def : Pat<(SPhi tglobaladdr:$in), (SETHIi tglobaladdr:$in)>;

12
test/CodeGen/SPARC/2011-01-11-CC.ll
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@ -21,10 +21,10 @@ entry:
define i32 @test_select_int_icc(i32 %a, i32 %b, i32 %c) nounwind readnone noinline {
entry:
; V8: test_select_int_icc
; V8: subcc
; V8: cmp
; V8: {{be|bne}}
; V9: test_select_int_icc
; V9: subcc
; V9: cmp
; V9-NOT: {{be|bne}}
; V9: mov{{e|ne}} %icc
%0 = icmp eq i32 %a, 0
@ -36,10 +36,10 @@ entry:
define float @test_select_fp_icc(i32 %a, float %f1, float %f2) nounwind readnone noinline {
entry:
; V8: test_select_fp_icc
; V8: subcc
; V8: cmp
; V8: {{be|bne}}
; V9: test_select_fp_icc
; V9: subcc
; V9: cmp
; V9-NOT: {{be|bne}}
; V9: fmovs{{e|ne}} %icc
%0 = icmp eq i32 %a, 0
@ -50,10 +50,10 @@ entry:
define double @test_select_dfp_icc(i32 %a, double %f1, double %f2) nounwind readnone noinline {
entry:
; V8: test_select_dfp_icc
; V8: subcc
; V8: cmp
; V8: {{be|bne}}
; V9: test_select_dfp_icc
; V9: subcc
; V9: cmp
; V9-NOT: {{be|bne}}
; V9: fmovd{{e|ne}} %icc
%0 = icmp eq i32 %a, 0

4
test/CodeGen/SPARC/2011-01-19-DelaySlot.ll
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@ -40,7 +40,7 @@ bb: ; preds = %entry, %bb
%a_addr.0 = add i32 %.pn, %a_addr.18
%3 = add nsw i32 %1, 1
%exitcond = icmp eq i32 %3, %b
;CHECK: subcc
;CHECK: cmp
;CHECK: bne
;CHECK-NOT: nop
br i1 %exitcond, label %bb5, label %bb
@ -57,7 +57,7 @@ entry:
;CHECK: test_inlineasm
;CHECK: sethi
;CHECK: !NO_APP
;CHECK-NEXT: subcc
;CHECK-NEXT: cmp
;CHECK-NEXT: bg
;CHECK-NEXT: nop
tail call void asm sideeffect "sethi 0, %g0", ""() nounwind

2
test/CodeGen/SPARC/64bit.ll
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@ -230,7 +230,7 @@ entry:
declare void @g(i8*)
; CHECK: expand_setcc
; CHECK: subcc %i0, 1,
; CHECK: cmp %i0, 1
; CHECK: movl %xcc, 1,
define i32 @expand_setcc(i64 %a) {
%cond = icmp sle i64 %a, 0

16
test/CodeGen/SPARC/64cond.ll
View File

@ -2,7 +2,7 @@
; Testing 64-bit conditionals. The sparc64 triple is an alias for sparcv9.
; CHECK: cmpri
; CHECK: subcc %i1, 1
; CHECK: cmp %i1, 1
; CHECK: bpe %xcc,
define void @cmpri(i64* %p, i64 %x) {
entry:
@ -18,7 +18,7 @@ if.end:
}
; CHECK: cmprr
; CHECK: subcc %i1, %i2
; CHECK: cmp %i1, %i2
; CHECK: bpgu %xcc,
define void @cmprr(i64* %p, i64 %x, i64 %y) {
entry:
@ -34,7 +34,7 @@ if.end:
}
; CHECK: selecti32_xcc
; CHECK: subcc %i0, %i1
; CHECK: cmp %i0, %i1
; CHECK: movg %xcc, %i2, %i3
; CHECK: restore %g0, %i3, %o0
define i32 @selecti32_xcc(i64 %x, i64 %y, i32 %a, i32 %b) {
@ -45,7 +45,7 @@ entry:
}
; CHECK: selecti64_xcc
; CHECK: subcc %i0, %i1
; CHECK: cmp %i0, %i1
; CHECK: movg %xcc, %i2, %i3
; CHECK: restore %g0, %i3, %o0
define i64 @selecti64_xcc(i64 %x, i64 %y, i64 %a, i64 %b) {
@ -56,7 +56,7 @@ entry:
}
; CHECK: selecti64_icc
; CHECK: subcc %i0, %i1
; CHECK: cmp %i0, %i1
; CHECK: movg %icc, %i2, %i3
; CHECK: restore %g0, %i3, %o0
define i64 @selecti64_icc(i32 %x, i32 %y, i64 %a, i64 %b) {
@ -78,7 +78,7 @@ entry:
}
; CHECK: selectf32_xcc
; CHECK: subcc %i0, %i1
; CHECK: cmp %i0, %i1
; CHECK: fmovsg %xcc, %f5, %f7
; CHECK: fmovs %f7, %f1
define float @selectf32_xcc(i64 %x, i64 %y, float %a, float %b) {
@ -89,7 +89,7 @@ entry:
}
; CHECK: selectf64_xcc
; CHECK: subcc %i0, %i1
; CHECK: cmp %i0, %i1
; CHECK: fmovdg %xcc, %f4, %f6
; CHECK: fmovd %f6, %f0
define double @selectf64_xcc(i64 %x, i64 %y, double %a, double %b) {
@ -101,7 +101,7 @@ entry:
; The MOVXCC instruction can't use %g0 for its tied operand.
; CHECK: select_consti64_xcc
; CHECK: subcc
; CHECK: cmp
; CHECK: movg %xcc, 123, %i0
define i64 @select_consti64_xcc(i64 %x, i64 %y) {
entry: