AMDGPU/GlobalISel: RegBankSelect for amdgcn.div.scale

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@363667 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp b/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
index 368e675a5e1e0d76f1b85374b085740de6beb567..caf7a16c0b2c0be673e0319784bda3e3db276646 100644 (file)
--- a/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
+++ b/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
@@ -1378,6 +1378,20 @@ AMDGPURegisterBankInfo::getInstrMapping(const MachineInstr &MI) const {
       OpdsMapping[4] = nullptr;
       break;
     }
+    case Intrinsic::amdgcn_div_scale: {
+      unsigned Dst0Size = MRI.getType(MI.getOperand(0).getReg()).getSizeInBits();
+      unsigned Dst1Size = MRI.getType(MI.getOperand(1).getReg()).getSizeInBits();
+      OpdsMapping[0] = AMDGPU::getValueMapping(AMDGPU::VGPRRegBankID, Dst0Size);
+      OpdsMapping[1] = AMDGPU::getValueMapping(AMDGPU::VCCRegBankID, Dst1Size);
+
+      unsigned SrcSize = MRI.getType(MI.getOperand(3).getReg()).getSizeInBits();
+      OpdsMapping[3] = AMDGPU::getValueMapping(
+        getRegBankID(MI.getOperand(3).getReg(), MRI, *TRI), SrcSize);
+      OpdsMapping[4] = AMDGPU::getValueMapping(
+        getRegBankID(MI.getOperand(4).getReg(), MRI, *TRI), SrcSize);
+
+      break;
+    }
     }
     break;
   }

diff --git a/test/CodeGen/AMDGPU/GlobalISel/regbankselect-amdgcn.div.scale.mir b/test/CodeGen/AMDGPU/GlobalISel/regbankselect-amdgcn.div.scale.mir
new file mode 100644 (file)
index 0000000..60e1c8f
--- /dev/null
+++ b/test/CodeGen/AMDGPU/GlobalISel/regbankselect-amdgcn.div.scale.mir
@@ -0,0 +1,67 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+# RUN: llc -march=amdgcn -mcpu=fiji -run-pass=regbankselect %s -verify-machineinstrs -o - -regbankselect-fast | FileCheck %s
+# RUN: llc -march=amdgcn -mcpu=fiji -run-pass=regbankselect %s -verify-machineinstrs -o - -regbankselect-greedy | FileCheck %s
+
+---
+name: div_scale_ss
+legalized: true
+
+body: |
+  bb.0:
+    liveins: $sgpr0, $sgpr1
+    ; CHECK-LABEL: name: div_scale_ss
+    ; CHECK: [[COPY:%[0-9]+]]:sgpr(s32) = COPY $sgpr0
+    ; CHECK: [[COPY1:%[0-9]+]]:sgpr(s32) = COPY $sgpr1
+    ; CHECK: [[INT:%[0-9]+]]:vgpr(s32), [[INT1:%[0-9]+]]:vcc(s1) = G_INTRINSIC intrinsic(@llvm.amdgcn.div.scale), [[COPY]](s32), [[COPY1]](s32), 0
+    %0:_(s32) = COPY $sgpr0
+    %1:_(s32) = COPY $sgpr1
+    %2:_(s32), %3:_(s1) = G_INTRINSIC intrinsic(@llvm.amdgcn.div.scale), %0, %1, 0
+...
+
+---
+name: div_scale_sv
+legalized: true
+
+body: |
+  bb.0:
+    liveins: $sgpr0, $vgpr0
+    ; CHECK-LABEL: name: div_scale_sv
+    ; CHECK: [[COPY:%[0-9]+]]:sgpr(s32) = COPY $sgpr0
+    ; CHECK: [[COPY1:%[0-9]+]]:vgpr(s32) = COPY $vgpr0
+    ; CHECK: [[INT:%[0-9]+]]:vgpr(s32), [[INT1:%[0-9]+]]:vcc(s1) = G_INTRINSIC intrinsic(@llvm.amdgcn.div.scale), [[COPY]](s32), [[COPY1]](s32), 0
+    %0:_(s32) = COPY $sgpr0
+    %1:_(s32) = COPY $vgpr0
+    %2:_(s32), %3:_(s1) = G_INTRINSIC intrinsic(@llvm.amdgcn.div.scale), %0, %1, 0
+...
+
+---
+name: div_scale_vs
+legalized: true
+
+body: |
+  bb.0:
+    liveins: $sgpr0, $vgpr0
+    ; CHECK-LABEL: name: div_scale_vs
+    ; CHECK: [[COPY:%[0-9]+]]:vgpr(s32) = COPY $vgpr0
+    ; CHECK: [[COPY1:%[0-9]+]]:sgpr(s32) = COPY $sgpr0
+    ; CHECK: [[INT:%[0-9]+]]:vgpr(s32), [[INT1:%[0-9]+]]:vcc(s1) = G_INTRINSIC intrinsic(@llvm.amdgcn.div.scale), [[COPY]](s32), [[COPY1]](s32), 0
+    %0:_(s32) = COPY $vgpr0
+    %1:_(s32) = COPY $sgpr0
+    %2:_(s32), %3:_(s1) = G_INTRINSIC intrinsic(@llvm.amdgcn.div.scale), %0, %1, 0
+...
+
+---
+name: div_scale_vv
+legalized: true
+
+body: |
+  bb.0:
+    liveins: $vgpr0, $vgpr0
+    ; CHECK-LABEL: name: div_scale_vv
+    ; CHECK: [[COPY:%[0-9]+]]:vgpr(s32) = COPY $vgpr0
+    ; CHECK: [[COPY1:%[0-9]+]]:vgpr(s32) = COPY $vgpr0
+    ; CHECK: [[INT:%[0-9]+]]:vgpr(s32), [[INT1:%[0-9]+]]:vcc(s1) = G_INTRINSIC intrinsic(@llvm.amdgcn.div.scale), [[COPY]](s32), [[COPY1]](s32), 0
+    %0:_(s32) = COPY $vgpr0
+    %1:_(s32) = COPY $vgpr0
+    %2:_(s32), %3:_(s1) = G_INTRINSIC intrinsic(@llvm.amdgcn.div.scale), %0, %1, 0
+...