AMDGPU: Fix using incorrect private resource with no allocation
It's possible to have a use of the private resource descriptor or
scratch wave offset registers even though there are no allocated
stack objects. This would result in continuing to use the maximum
number reserved registers. This could go over the number of SGPRs
available on VI, or violate the SGPR limit requested by
the function attributes.
llvm-svn: 285435
diff --git a/llvm/test/CodeGen/AMDGPU/spill-m0.ll b/llvm/test/CodeGen/AMDGPU/spill-m0.ll
index 2f99efd..74e33d1 100644
--- a/llvm/test/CodeGen/AMDGPU/spill-m0.ll
+++ b/llvm/test/CodeGen/AMDGPU/spill-m0.ll
@@ -6,6 +6,8 @@
; XXX - Why does it like to use vcc?
; GCN-LABEL: {{^}}spill_m0:
+; TOSMEM: s_mov_b32 s88, SCRATCH_RSRC_DWORD0
+
; GCN: s_cmp_lg_u32
; TOVGPR: s_mov_b32 vcc_hi, m0