[RTG] Add virtual register reduction pattern #9283
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fabianschuiki
approved these changes
Dec 2, 2025
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| /// Replace virtual registers with a constant register. | ||
| struct VirtualRegisterConstantifier : public OpReduction<VirtualRegisterOp> { | ||
| LogicalResult rewrite(VirtualRegisterOp op) override { | ||
| if (op.getAllowedRegs().getAllowedRegs().empty()) | ||
| return failure(); | ||
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| OpBuilder builder(op); | ||
| auto constReg = ConstantOp::create(builder, op.getLoc(), | ||
| op.getAllowedRegs().getAllowedRegs()[0]); | ||
| op.getResult().replaceAllUsesWith(constReg); | ||
| op.erase(); | ||
| return success(); | ||
| } | ||
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| std::string getName() const override { | ||
| return "rtg-virtual-register-constantifier"; | ||
| } | ||
| }; |
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Should this go into an anonymous namespace?
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