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