derek.holloway
7502bf64a4
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95 lines
3.5 KiB
LLVM
95 lines
3.5 KiB
LLVM
; RUN: opt -mtriple=amdgcn--amdhsa -S -passes=inline -inline-threshold=0 -debug-only=inline-cost %s 2>&1 | FileCheck %s
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; REQUIRES: asserts
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; Verify we are properly adding cost of the -amdgpu-inline-arg-alloca-cost to the threshold.
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define void @local_access_only(ptr addrspace(5) %p, i32 %idx) {
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%arrayidx = getelementptr inbounds [64 x float], ptr addrspace(5) %p, i32 0, i32 %idx
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%value = load float, ptr addrspace(5) %arrayidx
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store float %value , ptr addrspace(5) %arrayidx, align 4
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ret void
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}
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; Below the cutoff, the alloca cost is 0, and only the cost of the instructions saved by sroa is counted
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; CHECK: Analyzing call of local_access_only... (caller:test_inliner_sroa_single_below_cutoff)
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; CHECK: NumAllocaArgs: 1
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; CHECK: SROACostSavings: 10
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; CHECK: SROACostSavingsLost: 0
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; CHECK: Threshold: 66000
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define amdgpu_kernel void @test_inliner_sroa_single_below_cutoff(ptr addrspace(1) %a, i32 %n) {
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entry:
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%pvt_arr = alloca [64 x float], align 4, addrspace(5)
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call void @local_access_only(ptr addrspace(5) %pvt_arr, i32 4)
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ret void
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}
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; Above the cutoff, attribute a cost to the alloca
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; CHECK: Analyzing call of local_access_only... (caller:test_inliner_sroa_single_above_cutoff)
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; CHECK: NumAllocaArgs: 1
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; CHECK: SROACostSavings: 66010
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; CHECK: SROACostSavingsLost: 0
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; CHECK: Threshold: 66000
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define amdgpu_kernel void @test_inliner_sroa_single_above_cutoff(ptr addrspace(1) %a, i32 %n) {
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entry:
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%pvt_arr = alloca [65 x float], align 4, addrspace(5)
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call void @local_access_only(ptr addrspace(5) %pvt_arr, i32 4)
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ret void
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}
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define void @use_first_externally(ptr addrspace(5) %p1, ptr addrspace(5) %p2) {
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call void @external(ptr addrspace(5) %p1)
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%arrayidx = getelementptr inbounds [64 x float], ptr addrspace(5) %p2, i32 0, i32 7
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%value = load float, ptr addrspace(5) %arrayidx
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store float %value , ptr addrspace(5) %arrayidx, align 4
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ret void
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}
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define void @use_both_externally(ptr addrspace(5) %p1, ptr addrspace(5) %p2) {
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call void @external(ptr addrspace(5) %p1)
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call void @external(ptr addrspace(5) %p2)
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ret void
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}
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; One array cannot get handled by SROA
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; CHECK: Analyzing call of use_first_externally... (caller:test_inliner_sroa_double)
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; CHECK: NumAllocaArgs: 2
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; CHECK: SROACostSavings: 32502
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; CHECK: SROACostSavingsLost: 33507
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; CHECK: Threshold: 66000
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define amdgpu_kernel void @test_inliner_sroa_double() {
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entry:
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%pvt_arr1 = alloca [33 x float], align 4, addrspace(5)
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%pvt_arr2 = alloca [32 x float], align 4, addrspace(5)
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call void @use_first_externally(ptr addrspace(5) %pvt_arr1, ptr addrspace(5) %pvt_arr2)
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ret void
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}
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; The two arrays cannot get handled by SROA
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; CHECK: Analyzing call of use_both_externally... (caller:test_inliner_no_sroa)
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; CHECK: NumAllocaArgs: 2
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; CHECK: SROACostSavings: 0
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; CHECK: SROACostSavingsLost: 65999
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; CHECK: Threshold: 66000
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define amdgpu_kernel void @test_inliner_no_sroa() {
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entry:
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%pvt_arr1 = alloca [33 x float], align 4, addrspace(5)
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%pvt_arr2 = alloca [32 x float], align 4, addrspace(5)
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call void @use_both_externally(ptr addrspace(5) %pvt_arr1, ptr addrspace(5) %pvt_arr2)
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ret void
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}
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; No private arrays
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; CHECK: Analyzing call of use_both_externally... (caller:test_inliner_no_alloc)
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; CHECK: NumAllocaArgs: 0
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; CHECK: SROACostSavings: 0
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; CHECK: SROACostSavingsLost: 0
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; CHECK: Threshold: 0
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define amdgpu_kernel void @test_inliner_no_alloc(ptr addrspace(5) %a, ptr addrspace(5) %b) {
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entry:
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call void @use_both_externally(ptr addrspace(5) %a, ptr addrspace(5) %b)
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ret void
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}
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declare void @external(ptr addrspace(5) %p)
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