forked from OSchip/llvm-project
59 lines
2.6 KiB
LLVM
59 lines
2.6 KiB
LLVM
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; RUN: llc < %s -march=amdgcn -verify-machineinstrs | FileCheck -check-prefix=GCN %s
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; GCN-LABEL: {{^}}checkTwoBlocksWithUniformBranch
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; GCN: BB0_2
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; GCN: v_add
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define amdgpu_kernel void @checkTwoBlocksWithUniformBranch(i32 addrspace(1)* nocapture %out, i32 %width, float %xPos, float %yPos, float %xStep, float %yStep, i32 %maxIter) {
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entry:
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%conv = call i32 @llvm.amdgcn.workitem.id.x() #1
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%rem = urem i32 %conv, %width
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%div = udiv i32 %conv, %width
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%conv1 = sitofp i32 %rem to float
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%x = tail call float @llvm.fmuladd.f32(float %xStep, float %conv1, float %xPos)
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%conv2 = sitofp i32 %div to float
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%y = tail call float @llvm.fmuladd.f32(float %yStep, float %conv2, float %yPos)
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%yy = fmul float %y, %y
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%xy = tail call float @llvm.fmuladd.f32(float %x, float %x, float %yy)
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%cmp01 = fcmp ole float %xy, 4.000000e+00
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%cmp02 = icmp ne i32 %maxIter, 0
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%cond01 = and i1 %cmp02, %cmp01
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br i1 %cond01, label %for.body.preheader, label %for.end
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for.body.preheader: ; preds = %entry
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br label %for.body
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for.body: ; preds = %for.body.preheader, %for.body
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%x_val = phi float [ %call8, %for.body ], [ %x, %for.body.preheader ]
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%iter_val = phi i32 [ %inc, %for.body ], [ 0, %for.body.preheader ]
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%y_val = phi float [ %call9, %for.body ], [ %y, %for.body.preheader ]
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%sub = fsub float -0.000000e+00, %y_val
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%call7 = tail call float @llvm.fmuladd.f32(float %x_val, float %x_val, float %x) #1
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%call8 = tail call float @llvm.fmuladd.f32(float %sub, float %y_val, float %call7) #1
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%mul = fmul float %x_val, 2.000000e+00
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%call9 = tail call float @llvm.fmuladd.f32(float %mul, float %y_val, float %y) #1
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%inc = add nuw i32 %iter_val, 1
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%mul3 = fmul float %call9, %call9
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%0 = tail call float @llvm.fmuladd.f32(float %call8, float %call8, float %mul3)
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%cmp = fcmp ole float %0, 4.000000e+00
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%cmp5 = icmp ult i32 %inc, %maxIter
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%or.cond = and i1 %cmp5, %cmp
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br i1 %or.cond, label %for.body, label %for.end.loopexit
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for.end.loopexit: ; preds = %for.body
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br label %for.end
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for.end: ; preds = %for.end.loopexit, %entry
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%iter.0.lcssa = phi i32 [ 0, %entry ], [ %inc, %for.end.loopexit ]
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%idxprom = ashr exact i32 %conv, 32
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%arrayidx = getelementptr inbounds i32, i32 addrspace(1)* %out, i32 %idxprom
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store i32 %iter.0.lcssa, i32 addrspace(1)* %arrayidx, align 4
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ret void
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}
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; Function Attrs: nounwind readnone
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declare i32 @llvm.amdgcn.workitem.id.x() #0
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declare float @llvm.fmuladd.f32(float, float, float) #1
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attributes #0 = { nounwind readnone }
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attributes #1 = { readnone }
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