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fun with predicates! (add TRUNC i64->i1, AND i1 i1, fix XOR i1 i1)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24175 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duraid Madina
parent
7f39c14f52
commit
49fcc4006c
@ -105,6 +105,10 @@ def ADDS : AForm_DAG<0x03, 0x0b, (ops GR:$dst, GR:$src1, s14imm:$imm),
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"adds $dst = $imm, $src1;;",
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"adds $dst = $imm, $src1;;",
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[(set GR:$dst, (add GR:$src1, immSExt14:$imm))]>;
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[(set GR:$dst, (add GR:$src1, immSExt14:$imm))]>;
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def PADDS: AForm_DAG<0x03, 0x0b, (ops GR:$dst, GR:$src1, s14imm:$imm, PR:$qp),
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"($qp) adds $dst = $imm, $src1;;",
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[]>;
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def MOVL : AForm_DAG<0x03, 0x0b, (ops GR:$dst, s64imm:$imm),
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def MOVL : AForm_DAG<0x03, 0x0b, (ops GR:$dst, s64imm:$imm),
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"movl $dst = $imm;;",
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"movl $dst = $imm;;",
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[(set GR:$dst, imm64:$imm)]>;
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[(set GR:$dst, imm64:$imm)]>;
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@ -225,47 +229,6 @@ def OR : AForm_DAG<0x03, 0x0b, (ops GR:$dst, GR:$src1, GR:$src2),
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def pOR : AForm<0x03, 0x0b, (ops GR:$dst, GR:$src1, GR:$src2, PR:$qp),
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def pOR : AForm<0x03, 0x0b, (ops GR:$dst, GR:$src1, GR:$src2, PR:$qp),
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"($qp) or $dst = $src1, $src2;;">;
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"($qp) or $dst = $src1, $src2;;">;
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def PCMPEQUNCR0R0 : AForm<0x03, 0x0b, (ops PR:$dst, PR:$qp),
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"($qp) cmp.eq.unc $dst, p0 = r0, r0;;">;
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let isTwoAddress=1 in
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def TPCMPEQR0R0 : AForm<0x03, 0x0b, (ops PR:$dst, PR:$bogus, PR:$qp),
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"($qp) cmp.eq $dst, p0 = r0, r0;;">;
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/* our pseudocode for OR on predicates is:
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pC = pA OR pB
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-------------
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(pA) cmp.eq.unc pC,p0 = r0,r0 // pC = pA
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;;
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(pB) cmp.eq pC,p0 = r0,r0 // if (pB) pC = 1 */
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def bOR : Pat<(or PR:$src1, PR:$src2),
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(TPCMPEQR0R0 (PCMPEQUNCR0R0 PR:$src1), PR:$src2)>;
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// FIXME: these are bogus
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def bXOR : Pat<(xor PR:$src1, PR:$src2),
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(PCMPEQUNCR0R0 PR:$src1)>;
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def XOR : AForm_DAG<0x03, 0x0b, (ops GR:$dst, GR:$src1, GR:$src2),
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"xor $dst = $src1, $src2;;",
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[(set GR:$dst, (xor GR:$src1, GR:$src2))]>;
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def SHLADD: AForm_DAG<0x03, 0x0b, (ops GR:$dst,GR:$src1,s64imm:$imm,GR:$src2),
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"shladd $dst = $src1, $imm, $src2;;",
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[(set GR:$dst, (add GR:$src2, (shl GR:$src1, isSHLADDimm:$imm)))]>;
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def SHL : AForm_DAG<0x03, 0x0b, (ops GR:$dst, GR:$src1, GR:$src2),
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"shl $dst = $src1, $src2;;",
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[(set GR:$dst, (shl GR:$src1, GR:$src2))]>;
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def SHRU : AForm_DAG<0x03, 0x0b, (ops GR:$dst, GR:$src1, GR:$src2),
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"shr.u $dst = $src1, $src2;;",
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[(set GR:$dst, (srl GR:$src1, GR:$src2))]>;
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def SHRS : AForm_DAG<0x03, 0x0b, (ops GR:$dst, GR:$src1, GR:$src2),
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"shr $dst = $src1, $src2;;",
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[(set GR:$dst, (sra GR:$src1, GR:$src2))]>;
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// the following are all a bit unfortunate: we throw away the complement
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// the following are all a bit unfortunate: we throw away the complement
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// of the compare!
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// of the compare!
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def CMPEQ : AForm_DAG<0x03, 0x0b, (ops PR:$dst, GR:$src1, GR:$src2),
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def CMPEQ : AForm_DAG<0x03, 0x0b, (ops PR:$dst, GR:$src1, GR:$src2),
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@ -331,6 +294,99 @@ def FCMPGEU: AForm_DAG<0x03, 0x0b, (ops PR:$dst, FP:$src1, FP:$src2),
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"fcmp.geu $dst, p0 = $src1, $src2;;",
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"fcmp.geu $dst, p0 = $src1, $src2;;",
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[(set PR:$dst, (setuge FP:$src1, FP:$src2))]>;
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[(set PR:$dst, (setuge FP:$src1, FP:$src2))]>;
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def PCMPEQUNCR0R0 : AForm<0x03, 0x0b, (ops PR:$dst, PR:$qp),
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"($qp) cmp.eq.unc $dst, p0 = r0, r0;;">;
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def : Pat<(trunc GR:$src), // truncate i64 to i1
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(CMPNE GR:$src, r0)>; // $src!=0? If so, PR:$dst=true
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let isTwoAddress=1 in {
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def TPCMPEQR0R0 : AForm<0x03, 0x0b, (ops PR:$dst, PR:$bogus, PR:$qp),
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"($qp) cmp.eq $dst, p0 = r0, r0;;">;
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def TPCMPNER0R0 : AForm<0x03, 0x0b, (ops PR:$dst, PR:$bogus, PR:$qp),
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"($qp) cmp.ne $dst, p0 = r0, r0;;">;
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}
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/* our pseudocode for OR on predicates is:
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pC = pA OR pB
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-------------
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(pA) cmp.eq.unc pC,p0 = r0,r0 // pC = pA
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;;
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(pB) cmp.eq pC,p0 = r0,r0 // if (pB) pC = 1 */
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def bOR : Pat<(or PR:$src1, PR:$src2),
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(TPCMPEQR0R0 (PCMPEQUNCR0R0 PR:$src1), PR:$src2)>;
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/* our pseudocode for AND on predicates is:
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*
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(pA) cmp.eq.unc pC,p0 = r0,r0 // pC = pA
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cmp.eq pTemp,p0 = r0,r0 // pTemp = NOT pB
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;;
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(pB) cmp.ne pTemp,p0 = r0,r0
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;;
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(pTemp)cmp.ne pC,p0 = r0,r0 // if (NOT pB) pC = 0 */
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def bAND : Pat<(and PR:$src1, PR:$src2),
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( TPCMPNER0R0 (PCMPEQUNCR0R0 PR:$src1),
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(TPCMPNER0R0 (CMPEQ r0, r0), PR:$src2) )>;
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/* one possible routine for XOR on predicates is:
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// Compute px = py ^ pz
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// using sum of products: px = (py & !pz) | (pz & !py)
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// Uses 5 instructions in 3 cycles.
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// cycle 1
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(pz) cmp.eq.unc px = r0, r0 // px = pz
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(py) cmp.eq.unc pt = r0, r0 // pt = py
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;;
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// cycle 2
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(pt) cmp.ne.and px = r0, r0 // px = px & !pt (px = pz & !pt)
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(pz) cmp.ne.and pt = r0, r0 // pt = pt & !pz
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;;
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} { .mmi
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// cycle 3
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(pt) cmp.eq.or px = r0, r0 // px = px | pt
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*** Another, which we use here, requires one scratch GR. it is:
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mov rt = 0 // initialize rt off critical path
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;;
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// cycle 1
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(pz) cmp.eq.unc px = r0, r0 // px = pz
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(pz) mov rt = 1 // rt = pz
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;;
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// cycle 2
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(py) cmp.ne px = 1, rt // if (py) px = !pz
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.. these routines kindly provided by Jim Hull
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*/
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def bXOR : Pat<(xor PR:$src1, PR:$src2),
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(TPCMPIMM8NE (PCMPEQUNCR0R0 PR:$src2), 1,
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(PADDS r0, 1, PR:$src2),
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PR:$src1)>;
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def XOR : AForm_DAG<0x03, 0x0b, (ops GR:$dst, GR:$src1, GR:$src2),
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"xor $dst = $src1, $src2;;",
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[(set GR:$dst, (xor GR:$src1, GR:$src2))]>;
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def SHLADD: AForm_DAG<0x03, 0x0b, (ops GR:$dst,GR:$src1,s64imm:$imm,GR:$src2),
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"shladd $dst = $src1, $imm, $src2;;",
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[(set GR:$dst, (add GR:$src2, (shl GR:$src1, isSHLADDimm:$imm)))]>;
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def SHL : AForm_DAG<0x03, 0x0b, (ops GR:$dst, GR:$src1, GR:$src2),
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"shl $dst = $src1, $src2;;",
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[(set GR:$dst, (shl GR:$src1, GR:$src2))]>;
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def SHRU : AForm_DAG<0x03, 0x0b, (ops GR:$dst, GR:$src1, GR:$src2),
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"shr.u $dst = $src1, $src2;;",
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[(set GR:$dst, (srl GR:$src1, GR:$src2))]>;
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def SHRS : AForm_DAG<0x03, 0x0b, (ops GR:$dst, GR:$src1, GR:$src2),
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"shr $dst = $src1, $src2;;",
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[(set GR:$dst, (sra GR:$src1, GR:$src2))]>;
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def MOV : AForm<0x03, 0x0b, (ops GR:$dst, GR:$src), "mov $dst = $src;;">;
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def MOV : AForm<0x03, 0x0b, (ops GR:$dst, GR:$src), "mov $dst = $src;;">;
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def PMOV : AForm<0x03, 0x0b, (ops GR:$dst, GR:$src, PR:$qp),
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def PMOV : AForm<0x03, 0x0b, (ops GR:$dst, GR:$src, PR:$qp),
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"($qp) mov $dst = $src;;">;
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"($qp) mov $dst = $src;;">;
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