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342e72a308
This is equivalent to the AMDGPUTargetMachine now, but it is the starting point for separating R600 and GCN functionality into separate targets. It is recommened that users start using the gcn triple for GCN-based GPUs, because using the r600 triple for these GPUs will be deprecated in the future. llvm-svn: 225277
35 lines
1.1 KiB
LLVM
35 lines
1.1 KiB
LLVM
; RUN: llc < %s -march=amdgcn -mcpu=SI -verify-machineinstrs | FileCheck %s
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@lds = external addrspace(3) global [64 x float]
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; CHECK-LABEL: {{^}}main:
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; CHECK-NOT: v_readlane_b32 m0
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define void @main(<16 x i8> addrspace(2)* inreg, <16 x i8> addrspace(2)* inreg, <32 x i8> addrspace(2)* inreg, i32 inreg) "ShaderType"="0" {
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main_body:
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%4 = call float @llvm.SI.fs.constant(i32 0, i32 0, i32 %3)
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%cmp = fcmp ueq float 0.0, %4
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br i1 %cmp, label %if, label %else
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if:
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%lds_ptr = getelementptr [64 x float] addrspace(3)* @lds, i32 0, i32 0
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%lds_data = load float addrspace(3)* %lds_ptr
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br label %endif
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else:
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%interp = call float @llvm.SI.fs.constant(i32 0, i32 0, i32 %3)
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br label %endif
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endif:
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%export = phi float [%lds_data, %if], [%interp, %else]
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%5 = call i32 @llvm.SI.packf16(float %export, float %export)
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%6 = bitcast i32 %5 to float
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call void @llvm.SI.export(i32 15, i32 1, i32 1, i32 0, i32 1, float %6, float %6, float %6, float %6)
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ret void
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}
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declare float @llvm.SI.fs.constant(i32, i32, i32) readnone
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declare i32 @llvm.SI.packf16(float, float) readnone
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declare void @llvm.SI.export(i32, i32, i32, i32, i32, float, float, float, float)
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