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27744344f8
Instead add m0 as an implicit operand. This allows us to avoid using the M0Reg register class and eliminates a number of unnecessary spills when using s_sendmsg instructions. This impacts one shader in the shader-db: SGPRS: 48 -> 40 (-16.67 %) VGPRS: 112 -> 108 (-3.57 %) Code Size: 40132 -> 38796 (-3.33 %) bytes LDS: 0 -> 0 (0.00 %) blocks Scratch: 2048 -> 0 (-100.00 %) bytes per wave git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237133 91177308-0d34-0410-b5e6-96231b3b80d8
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