From 0c2a8d34cfe2222c187cc4b97eb3fa8161c56b53 Mon Sep 17 00:00:00 2001 From: Matt Arsenault Date: Mon, 10 Nov 2025 13:21:16 -0800 Subject: [PATCH] AMDGPU/GlobalISel: Fix AGPR regbank check for mfma_scale Fixes regressions with #159493 after 476a6ea9575 --- llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp b/llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp index 54ba2f8c0d519..dbca5afeca816 100644 --- a/llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp +++ b/llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp @@ -5081,17 +5081,17 @@ AMDGPURegisterBankInfo::getInstrMapping(const MachineInstr &MI) const { unsigned MinNumRegsRequired = DstSize / 32; const SIMachineFunctionInfo *Info = MF.getInfo(); + bool UseAGPRForm = Info->selectAGPRFormMFMA(MinNumRegsRequired); + OpdsMapping[0] = - Info->getMinNumAGPRs() >= MinNumRegsRequired - ? getAGPROpMapping(MI.getOperand(0).getReg(), MRI, *TRI) - : getVGPROpMapping(MI.getOperand(0).getReg(), MRI, *TRI); + UseAGPRForm ? getAGPROpMapping(MI.getOperand(0).getReg(), MRI, *TRI) + : getVGPROpMapping(MI.getOperand(0).getReg(), MRI, *TRI); OpdsMapping[2] = getVGPROpMapping(MI.getOperand(2).getReg(), MRI, *TRI); OpdsMapping[3] = getVGPROpMapping(MI.getOperand(3).getReg(), MRI, *TRI); OpdsMapping[4] = - Info->getMinNumAGPRs() >= MinNumRegsRequired - ? getAGPROpMapping(MI.getOperand(4).getReg(), MRI, *TRI) - : getVGPROpMapping(MI.getOperand(4).getReg(), MRI, *TRI); + UseAGPRForm ? getAGPROpMapping(MI.getOperand(4).getReg(), MRI, *TRI) + : getVGPROpMapping(MI.getOperand(4).getReg(), MRI, *TRI); OpdsMapping[8] = getVGPROpMapping(MI.getOperand(8).getReg(), MRI, *TRI); OpdsMapping[10] = getVGPROpMapping(MI.getOperand(10).getReg(), MRI, *TRI);