diff --git a/lib/Target/R600/SIRegisterInfo.cpp b/lib/Target/R600/SIRegisterInfo.cpp index f9feea470f1..59ff8a27d05 100644 --- a/lib/Target/R600/SIRegisterInfo.cpp +++ b/lib/Target/R600/SIRegisterInfo.cpp @@ -289,7 +289,7 @@ void SIRegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator MI, BuildMI(*MBB, MI, MI->getDebugLoc(), TII->get(AMDGPU::V_MOV_B32_e32), TmpReg) .addImm(Offset); - FIOp.ChangeToRegister(TmpReg, false); + FIOp.ChangeToRegister(TmpReg, false, false, true); } } } diff --git a/test/CodeGen/R600/scratch-buffer.ll b/test/CodeGen/R600/scratch-buffer.ll index cc2a522c9a8..740328a495d 100644 --- a/test/CodeGen/R600/scratch-buffer.ll +++ b/test/CodeGen/R600/scratch-buffer.ll @@ -3,9 +3,14 @@ ; When a frame index offset is more than 12-bits, make sure we don't store ; it in mubuf's offset field. +; Also, make sure we use the same register for storing the scratch buffer addresss +; for both stores. This register is allocated by the register scavenger, so we +; should be able to reuse the same regiser for each scratch buffer access. + ; CHECK-LABEL: {{^}}legal_offset_fi: -; CHECK: buffer_store_dword v{{[0-9]+}}, v{{[0-9]+}}, s[{{[0-9]+}}:{{[0-9]+}}], s{{[0-9]+}} offen -; CHECK: v_mov_b32_e32 [[OFFSET:v[0-9]+]], 0x8000 +; CHECK: v_mov_b32_e32 [[OFFSET:v[0-9]+]], 0{{$}} +; CHECK: buffer_store_dword v{{[0-9]+}}, [[OFFSET]], s[{{[0-9]+}}:{{[0-9]+}}], s{{[0-9]+}} offen +; CHECK: v_mov_b32_e32 [[OFFSET]], 0x8000 ; CHECK: buffer_store_dword v{{[0-9]+}}, [[OFFSET]], s[{{[0-9]+}}:{{[0-9]+}}], s{{[0-9]+}} offen{{$}} define void @legal_offset_fi(i32 addrspace(1)* %out, i32 %cond, i32 %if_offset, i32 %else_offset) {