derek.holloway
7502bf64a4
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86 lines
3.5 KiB
LLVM
86 lines
3.5 KiB
LLVM
; RUN: opt -S -mtriple=amdgcn-unknown-amdhsa -mcpu=hawaii -passes=loop-unroll -unroll-threshold=57 -unroll-peel-count=0 -unroll-allow-partial=false -unroll-max-iteration-count-to-analyze=16 < %s | FileCheck %s
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@indices = external global [16 x i32]
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; CHECK-LABEL: @test_func_addrspacecast_cost_noop(
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; CHECK-NOT: br i1
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define amdgpu_kernel void @test_func_addrspacecast_cost_noop(ptr addrspace(1) noalias nocapture %out, ptr addrspace(1) noalias nocapture %in) #0 {
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entry:
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br label %for.body
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for.body:
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%indvars.iv = phi i32 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
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%sum.02 = phi float [ %fmul, %for.body ], [ 0.0, %entry ]
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%idx.ptr = getelementptr inbounds [16 x i32], ptr @indices, i32 0, i32 %indvars.iv
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%index = load i32, ptr %idx.ptr
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%arrayidx.in = getelementptr inbounds float, ptr addrspace(1) %in, i32 %index
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%arrayidx.out = getelementptr inbounds float, ptr addrspace(1) %out, i32 %index
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%cast.in = addrspacecast ptr addrspace(1) %arrayidx.in to ptr
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%cast.out = addrspacecast ptr addrspace(1) %arrayidx.out to ptr
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%load = load float, ptr %cast.in
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%fmul = fmul float %load, %sum.02
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store float %fmul, ptr %cast.out
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%indvars.iv.next = add i32 %indvars.iv, 1
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%exitcond = icmp eq i32 %indvars.iv.next, 16
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br i1 %exitcond, label %for.end, label %for.body
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for.end:
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ret void
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}
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; Free, but not a no-op
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; CHECK-LABEL: @test_func_addrspacecast_cost_free(
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; CHECK-NOT: br i1
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define amdgpu_kernel void @test_func_addrspacecast_cost_free(ptr noalias nocapture %out, ptr noalias nocapture %in) #0 {
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entry:
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br label %for.body
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for.body:
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%indvars.iv = phi i32 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
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%sum.02 = phi float [ %fmul, %for.body ], [ 0.0, %entry ]
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%idx.ptr = getelementptr inbounds [16 x i32], ptr @indices, i32 0, i32 %indvars.iv
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%index = load i32, ptr %idx.ptr
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%arrayidx.in = getelementptr inbounds float, ptr %in, i32 %index
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%arrayidx.out = getelementptr inbounds float, ptr %out, i32 %index
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%cast.in = addrspacecast ptr %arrayidx.in to ptr addrspace(3)
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%cast.out = addrspacecast ptr %arrayidx.out to ptr addrspace(3)
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%load = load float, ptr addrspace(3) %cast.in
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%fmul = fmul float %load, %sum.02
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store float %fmul, ptr addrspace(3) %cast.out
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%indvars.iv.next = add i32 %indvars.iv, 1
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%exitcond = icmp eq i32 %indvars.iv.next, 16
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br i1 %exitcond, label %for.end, label %for.body
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for.end:
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ret void
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}
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; CHECK-LABEL: @test_func_addrspacecast_cost_nonfree(
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; CHECK: br i1 %exitcond
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define amdgpu_kernel void @test_func_addrspacecast_cost_nonfree(ptr addrspace(3) noalias nocapture %out, ptr addrspace(3) noalias nocapture %in) #0 {
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entry:
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br label %for.body
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for.body:
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%indvars.iv = phi i32 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
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%sum.02 = phi float [ %fmul, %for.body ], [ 0.0, %entry ]
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%idx.ptr = getelementptr inbounds [16 x i32], ptr @indices, i32 0, i32 %indvars.iv
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%index = load i32, ptr %idx.ptr
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%arrayidx.in = getelementptr inbounds float, ptr addrspace(3) %in, i32 %index
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%arrayidx.out = getelementptr inbounds float, ptr addrspace(3) %out, i32 %index
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%cast.in = addrspacecast ptr addrspace(3) %arrayidx.in to ptr
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%cast.out = addrspacecast ptr addrspace(3) %arrayidx.out to ptr
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%load = load float, ptr %cast.in
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%fmul = fmul float %load, %sum.02
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store float %fmul, ptr %cast.out
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%indvars.iv.next = add i32 %indvars.iv, 1
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%exitcond = icmp eq i32 %indvars.iv.next, 16
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br i1 %exitcond, label %for.end, label %for.body
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for.end:
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ret void
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}
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attributes #0 = { nounwind }
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attributes #1 = { nounwind readnone speculatable }
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