78 lines
3.2 KiB
LLVM
78 lines
3.2 KiB
LLVM
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; RUN: opt -S -mtriple=amdgcn-unknown-amdhsa -mcpu=hawaii -loop-unroll -unroll-threshold=75 -unroll-peel-count=0 -unroll-allow-partial=false -unroll-max-iteration-count-to-analyze=16 < %s | FileCheck %s
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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(float addrspace(1)* noalias nocapture %out, float 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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%arrayidx.in = getelementptr inbounds float, float addrspace(1)* %in, i32 %indvars.iv
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%arrayidx.out = getelementptr inbounds float, float addrspace(1)* %out, i32 %indvars.iv
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%cast.in = addrspacecast float addrspace(1)* %arrayidx.in to float*
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%cast.out = addrspacecast float addrspace(1)* %arrayidx.out to float*
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%load = load float, float* %cast.in
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%fmul = fmul float %load, %sum.02
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store float %fmul, float* %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(float* noalias nocapture %out, float* 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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%arrayidx.in = getelementptr inbounds float, float* %in, i32 %indvars.iv
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%arrayidx.out = getelementptr inbounds float, float* %out, i32 %indvars.iv
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%cast.in = addrspacecast float* %arrayidx.in to float addrspace(3)*
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%cast.out = addrspacecast float* %arrayidx.out to float addrspace(3)*
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%load = load float, float addrspace(3)* %cast.in
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%fmul = fmul float %load, %sum.02
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store float %fmul, float 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(float addrspace(3)* noalias nocapture %out, float 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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%arrayidx.in = getelementptr inbounds float, float addrspace(3)* %in, i32 %indvars.iv
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%arrayidx.out = getelementptr inbounds float, float addrspace(3)* %out, i32 %indvars.iv
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%cast.in = addrspacecast float addrspace(3)* %arrayidx.in to float*
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%cast.out = addrspacecast float addrspace(3)* %arrayidx.out to float*
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%load = load float, float* %cast.in
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%fmul = fmul float %load, %sum.02
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store float %fmul, float* %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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