4622afa94c
This is more precise in the face of indirect calls and aliases, still assuming the call target is defined somewhere in the current module. This sometimes changes the order the functions are printed, and also changes the point where context errors are printed relative to stdout. This also likely has negative consequences for compile time and memory usage.
138 lines
3.4 KiB
LLVM
138 lines
3.4 KiB
LLVM
; RUN: llc -mtriple=amdgcn-amd-amdhsa -verify-machineinstrs -enable-ipra -amdgpu-sroa=0 < %s | FileCheck -check-prefix=GCN %s
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; RUN: llc -mtriple=amdgcn-amd-amdhsa -verify-machineinstrs -amdgpu-sroa=0 < %s | FileCheck -check-prefix=GCN %s
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; Kernels are not called, so there is no call preserved mask.
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; GCN-LABEL: {{^}}kernel:
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; GCN: flat_store_dword
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define amdgpu_kernel void @kernel(i32 addrspace(1)* %out) #0 {
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entry:
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store i32 0, i32 addrspace(1)* %out
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ret void
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}
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; GCN-LABEL: {{^}}func:
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; GCN: ; NumVgprs: 8
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define hidden void @func() #1 {
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call void asm sideeffect "", "~{v0},~{v1},~{v2},~{v3},~{v4},~{v5},~{v6},~{v7}"() #0
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ret void
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}
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; GCN-LABEL: {{^}}kernel_call:
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; GCN-NOT: buffer_store
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; GCN-NOT: buffer_load
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; GCN-NOT: readlane
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; GCN-NOT: writelane
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; GCN: flat_load_dword v8
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; GCN: s_swappc_b64
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; GCN-NOT: buffer_store
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; GCN-NOT: buffer_load
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; GCN-NOT: readlane
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; GCN-NOT: writelane
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; GCN: flat_store_dword v{{\[[0-9]+:[0-9]+\]}}, v8
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; GCN: ; NumSgprs: 37
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; GCN: ; NumVgprs: 9
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define amdgpu_kernel void @kernel_call() #0 {
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%vgpr = load volatile i32, i32 addrspace(1)* undef
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tail call void @func()
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store volatile i32 %vgpr, i32 addrspace(1)* undef
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ret void
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}
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; GCN-LABEL: {{^}}func_regular_call:
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; GCN-NOT: buffer_store
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; GCN-NOT: buffer_load
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; GCN-NOT: readlane
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; GCN-NOT: writelane
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; GCN: flat_load_dword v8
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; GCN: s_swappc_b64
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; GCN-NOT: buffer_store
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; GCN-NOT: buffer_load
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; GCN-NOT: readlane
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; GCN-NOT: writelane
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; GCN: flat_store_dword v{{\[[0-9]+:[0-9]+\]}}, v8
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; GCN: ; NumSgprs: 32
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; GCN: ; NumVgprs: 9
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define void @func_regular_call() #1 {
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%vgpr = load volatile i32, i32 addrspace(1)* undef
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tail call void @func()
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store volatile i32 %vgpr, i32 addrspace(1)* undef
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ret void
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}
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; GCN-LABEL: {{^}}func_tail_call:
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; GCN: s_waitcnt
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; GCN-NEXT: s_getpc_b64 s[4:5]
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; GCN-NEXT: s_add_u32 s4,
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; GCN-NEXT: s_addc_u32 s5,
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; GCN-NEXT: s_setpc_b64 s[4:5]
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; GCN: ; NumSgprs: 32
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; GCN: ; NumVgprs: 8
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define void @func_tail_call() #1 {
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tail call void @func()
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ret void
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}
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; GCN-LABEL: {{^}}func_call_tail_call:
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; GCN: flat_load_dword v8
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; GCN: s_swappc_b64
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; GCN: flat_store_dword v{{\[[0-9]+:[0-9]+\]}}, v8
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; GCN: s_setpc_b64
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; GCN: ; NumSgprs: 32
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; GCN: ; NumVgprs: 9
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define void @func_call_tail_call() #1 {
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%vgpr = load volatile i32, i32 addrspace(1)* undef
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tail call void @func()
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store volatile i32 %vgpr, i32 addrspace(1)* undef
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tail call void @func()
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ret void
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}
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; GCN-LABEL: {{^}}void_func_void:
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define void @void_func_void() noinline {
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ret void
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}
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; Make sure we don't get save/restore of FP between calls.
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; GCN-LABEL: {{^}}test_funcx2:
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; GCN-NOT: s5
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; GCN-NOT: s32
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define void @test_funcx2() #0 {
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call void @void_func_void()
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call void @void_func_void()
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ret void
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}
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; GCN-LABEL: {{^}}wombat:
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define weak amdgpu_kernel void @wombat(i32* %arg, i32* %arg2) {
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bb:
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call void @hoge() #0
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ret void
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}
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; Make sure we save/restore the return address around the call.
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; Function Attrs: norecurse
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define internal void @hoge() #2 {
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bb:
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; GCN-LABEL: {{^}}hoge:
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; GCN-DAG: v_writelane_b32 [[CSR_VGPR:v[0-9]+]], s30,
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; GCN-DAG: v_writelane_b32 [[CSR_VGPR]], s31,
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; GCN: s_swappc_b64 s[30:31]
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; GCN-DAG: v_readlane_b32 s4, [[CSR_VGPR]],
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; GCN-DAG: v_readlane_b32 s5, [[CSR_VGPR]],
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; GCN: s_waitcnt vmcnt(0)
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; GCN: s_setpc_b64 s[4:5]
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call void @eggs()
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ret void
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}
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declare dso_local void @eggs()
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attributes #0 = { nounwind }
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attributes #1 = { nounwind noinline "amdgpu-no-workitem-id-x" "amdgpu-no-workitem-id-y" "amdgpu-no-workitem-id-z" }
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attributes #2 = { norecurse }
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