AMDGPU: Really implement getFrameRegister

Currently this seems to only really be used for debug info. llvm-svn: 328677
llvm · Mar 27, 2018 · bd49ecc · bd49ecc
1 parent 07480bd
commit bd49ecc
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Showing 2 changed files with 5 additions and 1 deletion.
diff --git a/llvm/lib/Target/AMDGPU/AMDGPURegisterInfo.cpp b/llvm/lib/Target/AMDGPU/AMDGPURegisterInfo.cpp
@@ -82,5 +82,6 @@ const uint32_t *SIRegisterInfo::getCallPreservedMask(const MachineFunction &MF,
 }
 
 unsigned SIRegisterInfo::getFrameRegister(const MachineFunction &MF) const {
-  return AMDGPU::NoRegister;
+  const SIMachineFunctionInfo *FuncInfo = MF.getInfo<SIMachineFunctionInfo>();
+  return FuncInfo->getFrameOffsetReg();
 }
diff --git a/llvm/test/DebugInfo/AMDGPU/variable-locations.ll b/llvm/test/DebugInfo/AMDGPU/variable-locations.ll
@@ -31,6 +31,9 @@ declare void @llvm.dbg.declare(metadata, metadata, metadata)
 ; CHECK-NEXT: DW_AT_location [DW_FORM_block1] (DW_OP_addr 0x0)
 @GlobB = common addrspace(1) global i32 0, align 4, !dbg !6
 
+; CHECK: {{.*}}DW_TAG_subprogram
+; CHECK: DW_AT_frame_base [DW_FORM_block1]	(DW_OP_reg9 SGPR9)
+
 define amdgpu_kernel void @kernel1(
 ; CHECK: {{.*}}DW_TAG_formal_parameter
 ; CHECK-NEXT: DW_AT_location [DW_FORM_block1] (DW_OP_fbreg +4, DW_OP_constu 0x1, DW_OP_swap, DW_OP_xderef)