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98 lines
5.3 KiB
TableGen
98 lines
5.3 KiB
TableGen
// RUN: llvm-tblgen -I %p/../../../include -gen-global-isel-combiner \
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// RUN: -combiners=MyCombiner %s | \
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// RUN: FileCheck %s
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include "llvm/Target/Target.td"
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include "llvm/Target/GlobalISel/Combine.td"
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def MyTargetISA : InstrInfo;
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def MyTarget : Target { let InstructionSet = MyTargetISA; }
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// These two combine rules both use GIM_CheckIsSameOperandIgnoreCopies.
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// Check that the match table does not try to combine them by hoisting them in the GroupMatcher,
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// which would cause a runtime crash as the "other inst" used by the predicate is
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// only defined in the leaf RuleMatcher.
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def SharedPreds0 : GICombineRule<
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(defs root:$root),
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(match (G_SUB $sub1, $B, $C),
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(G_ADD $add1, $A, $sub1),
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(G_SUB $root, $add1, $B)),
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(apply (G_SUB $root, $A, $C))>;
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def SharedPreds1 : GICombineRule<
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(defs root:$root),
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(match (G_ADD $add1, $B, $C),
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(G_ADD $add2, $A, $add1),
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(G_SUB $root, $add2, $B)),
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(apply (G_ADD $root, $A, $C))>;
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def MyCombiner: GICombiner<"GenMyCombiner", [
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SharedPreds0,
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SharedPreds1
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]>;
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// CHECK: const uint8_t *GenMyCombiner::getMatchTable() const {
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// CHECK-NEXT: constexpr static uint8_t MatchTable0[] = {
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// CHECK-NEXT: /* 0 */ GIM_Try, /*On fail goto*//*Label 0*/ GIMT_Encode4(100),
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// CHECK-NEXT: /* 5 */ GIM_CheckOpcode, /*MI*/0, GIMT_Encode2(TargetOpcode::G_SUB),
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// CHECK-NEXT: /* 9 */ GIM_Try, /*On fail goto*//*Label 1*/ GIMT_Encode4(54), // Rule ID 1 //
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// CHECK-NEXT: /* 14 */ GIM_CheckSimplePredicate, GIMT_Encode2(GICXXPred_Simple_IsRule1Enabled),
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// CHECK-NEXT: /* 17 */ // MIs[0] root
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// CHECK-NEXT: /* 17 */ // No operand predicates
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// CHECK-NEXT: /* 17 */ // MIs[0] add2
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// CHECK-NEXT: /* 17 */ GIM_RecordInsnIgnoreCopies, /*DefineMI*/1, /*MI*/0, /*OpIdx*/1, // MIs[1]
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// CHECK-NEXT: /* 21 */ GIM_CheckOpcode, /*MI*/1, GIMT_Encode2(TargetOpcode::G_ADD),
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// CHECK-NEXT: /* 25 */ // MIs[1] A
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// CHECK-NEXT: /* 25 */ // No operand predicates
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// CHECK-NEXT: /* 25 */ // MIs[1] add1
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// CHECK-NEXT: /* 25 */ GIM_RecordInsnIgnoreCopies, /*DefineMI*/2, /*MI*/1, /*OpIdx*/2, // MIs[2]
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// CHECK-NEXT: /* 29 */ GIM_CheckOpcode, /*MI*/2, GIMT_Encode2(TargetOpcode::G_ADD),
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// CHECK-NEXT: /* 33 */ // MIs[2] B
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// CHECK-NEXT: /* 33 */ // No operand predicates
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// CHECK-NEXT: /* 33 */ // MIs[2] C
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// CHECK-NEXT: /* 33 */ // No operand predicates
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// CHECK-NEXT: /* 33 */ // MIs[0] B
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// CHECK-NEXT: /* 33 */ GIM_CheckIsSameOperandIgnoreCopies, /*MI*/0, /*OpIdx*/2, /*OtherMI*/2, /*OtherOpIdx*/1,
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// CHECK-NEXT: /* 38 */ GIM_CheckIsSafeToFold, /*NumInsns*/2,
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// CHECK-NEXT: /* 40 */ // Combiner Rule #1: SharedPreds1
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// CHECK-NEXT: /* 40 */ GIR_BuildRootMI, /*Opcode*/GIMT_Encode2(TargetOpcode::G_ADD),
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// CHECK-NEXT: /* 43 */ GIR_RootToRootCopy, /*OpIdx*/0, // root
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// CHECK-NEXT: /* 45 */ GIR_Copy, /*NewInsnID*/0, /*OldInsnID*/1, /*OpIdx*/1, // A
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// CHECK-NEXT: /* 49 */ GIR_Copy, /*NewInsnID*/0, /*OldInsnID*/2, /*OpIdx*/2, // C
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// CHECK-NEXT: /* 53 */ GIR_EraseRootFromParent_Done,
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// CHECK-NEXT: /* 54 */ // Label 1: @54
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// CHECK-NEXT: /* 54 */ GIM_Try, /*On fail goto*//*Label 2*/ GIMT_Encode4(99), // Rule ID 0 //
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// CHECK-NEXT: /* 59 */ GIM_CheckSimplePredicate, GIMT_Encode2(GICXXPred_Simple_IsRule0Enabled),
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// CHECK-NEXT: /* 62 */ // MIs[0] root
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// CHECK-NEXT: /* 62 */ // No operand predicates
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// CHECK-NEXT: /* 62 */ // MIs[0] add1
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// CHECK-NEXT: /* 62 */ GIM_RecordInsnIgnoreCopies, /*DefineMI*/1, /*MI*/0, /*OpIdx*/1, // MIs[1]
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// CHECK-NEXT: /* 66 */ GIM_CheckOpcode, /*MI*/1, GIMT_Encode2(TargetOpcode::G_ADD),
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// CHECK-NEXT: /* 70 */ // MIs[1] A
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// CHECK-NEXT: /* 70 */ // No operand predicates
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// CHECK-NEXT: /* 70 */ // MIs[1] sub1
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// CHECK-NEXT: /* 70 */ GIM_RecordInsnIgnoreCopies, /*DefineMI*/2, /*MI*/1, /*OpIdx*/2, // MIs[2]
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// CHECK-NEXT: /* 74 */ GIM_CheckOpcode, /*MI*/2, GIMT_Encode2(TargetOpcode::G_SUB),
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// CHECK-NEXT: /* 78 */ // MIs[2] B
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// CHECK-NEXT: /* 78 */ // No operand predicates
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// CHECK-NEXT: /* 78 */ // MIs[2] C
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// CHECK-NEXT: /* 78 */ // No operand predicates
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// CHECK-NEXT: /* 78 */ // MIs[0] B
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// CHECK-NEXT: /* 78 */ GIM_CheckIsSameOperandIgnoreCopies, /*MI*/0, /*OpIdx*/2, /*OtherMI*/2, /*OtherOpIdx*/1,
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// CHECK-NEXT: /* 83 */ GIM_CheckIsSafeToFold, /*NumInsns*/2,
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// CHECK-NEXT: /* 85 */ // Combiner Rule #0: SharedPreds0
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// CHECK-NEXT: /* 85 */ GIR_BuildRootMI, /*Opcode*/GIMT_Encode2(TargetOpcode::G_SUB),
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// CHECK-NEXT: /* 88 */ GIR_RootToRootCopy, /*OpIdx*/0, // root
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// CHECK-NEXT: /* 90 */ GIR_Copy, /*NewInsnID*/0, /*OldInsnID*/1, /*OpIdx*/1, // A
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// CHECK-NEXT: /* 94 */ GIR_Copy, /*NewInsnID*/0, /*OldInsnID*/2, /*OpIdx*/2, // C
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// CHECK-NEXT: /* 98 */ GIR_EraseRootFromParent_Done,
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// CHECK-NEXT: /* 99 */ // Label 2: @99
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// CHECK-NEXT: /* 99 */ GIM_Reject,
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// CHECK-NEXT: /* 100 */ // Label 0: @100
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// CHECK-NEXT: /* 100 */ GIM_Reject,
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// CHECK-NEXT: /* 101 */ }; // Size: 101 bytes
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// CHECK-NEXT: return MatchTable0;
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// CHECK-NEXT: }
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