61332cb047
For chain functions, PAL uses a `backend_stack_size` metadata item, which at the moment has the same meaning as `stack_frame_size_in_bytes`. We emit both for now in order to simplify coordination with PAL. The new item must be emitted in the `shader_functions` section, just as the metadata for other module entry functions. For simplicity, we mark chain functions as module entry functions and emit the same metadata for all of them.
247 lines
9.3 KiB
LLVM
247 lines
9.3 KiB
LLVM
; RUN: llc -mtriple=amdgcn--amdpal -mattr=-xnack -verify-machineinstrs < %s | FileCheck -check-prefixes=GCN,SDAG,GFX8 -enable-var-scope %s
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; RUN: llc -mtriple=amdgcn--amdpal -mcpu=gfx900 -mattr=-xnack -verify-machineinstrs < %s | FileCheck -check-prefixes=GCN,SDAG,GFX9 -enable-var-scope %s
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; RUN: llc -global-isel -mtriple=amdgcn--amdpal -mattr=-xnack -mcpu=gfx900 -verify-machineinstrs < %s | FileCheck -check-prefixes=GCN,GISEL,GFX9 -enable-var-scope %s
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declare amdgpu_gfx float @extern_func(float) #0
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declare amdgpu_gfx float @extern_func_many_args(<64 x float>) #0
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@funcptr = external hidden unnamed_addr addrspace(4) constant ptr, align 4
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define amdgpu_gfx float @no_stack(float %arg0) #0 {
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%add = fadd float %arg0, 1.0
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ret float %add
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}
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define amdgpu_gfx float @simple_stack(float %arg0) #0 {
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%stack = alloca float, i32 4, align 4, addrspace(5)
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store volatile float 2.0, ptr addrspace(5) %stack
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%val = load volatile float, ptr addrspace(5) %stack
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%add = fadd float %arg0, %val
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ret float %add
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}
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define amdgpu_gfx float @multiple_stack(float %arg0) #0 {
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%stack = alloca float, i32 4, align 4, addrspace(5)
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store volatile float 2.0, ptr addrspace(5) %stack
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%val = load volatile float, ptr addrspace(5) %stack
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%add = fadd float %arg0, %val
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%stack2 = alloca float, i32 4, align 4, addrspace(5)
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store volatile float 2.0, ptr addrspace(5) %stack2
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%val2 = load volatile float, ptr addrspace(5) %stack2
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%add2 = fadd float %add, %val2
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ret float %add2
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}
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define amdgpu_gfx float @dynamic_stack(float %arg0) #0 {
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bb0:
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%cmp = fcmp ogt float %arg0, 0.0
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br i1 %cmp, label %bb1, label %bb2
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bb1:
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%stack = alloca float, i32 4, align 4, addrspace(5)
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store volatile float 2.0, ptr addrspace(5) %stack
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%val = load volatile float, ptr addrspace(5) %stack
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%add = fadd float %arg0, %val
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br label %bb2
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bb2:
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%res = phi float [ 0.0, %bb0 ], [ %add, %bb1 ]
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ret float %res
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}
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define amdgpu_gfx float @dynamic_stack_loop(float %arg0) #0 {
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bb0:
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br label %bb1
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bb1:
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%ctr = phi i32 [ 0, %bb0 ], [ %newctr, %bb1 ]
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%stack = alloca float, i32 4, align 4, addrspace(5)
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store volatile float 2.0, ptr addrspace(5) %stack
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%val = load volatile float, ptr addrspace(5) %stack
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%add = fadd float %arg0, %val
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%cmp = icmp sgt i32 %ctr, 0
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%newctr = sub i32 %ctr, 1
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br i1 %cmp, label %bb1, label %bb2
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bb2:
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ret float %add
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}
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define amdgpu_gfx float @no_stack_call(float %arg0) #0 {
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%res = call amdgpu_gfx float @simple_stack(float %arg0)
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ret float %res
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}
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define amdgpu_gfx float @simple_stack_call(float %arg0) #0 {
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%stack = alloca float, i32 4, align 4, addrspace(5)
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store volatile float 2.0, ptr addrspace(5) %stack
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%val = load volatile float, ptr addrspace(5) %stack
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%res = call amdgpu_gfx float @simple_stack(float %arg0)
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%add = fadd float %res, %val
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ret float %add
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}
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define amdgpu_gfx float @no_stack_extern_call(float %arg0) #0 {
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%res = call amdgpu_gfx float @extern_func(float %arg0)
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ret float %res
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}
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define amdgpu_gfx float @simple_stack_extern_call(float %arg0) #0 {
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%stack = alloca float, i32 4, align 4, addrspace(5)
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store volatile float 2.0, ptr addrspace(5) %stack
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%val = load volatile float, ptr addrspace(5) %stack
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%res = call amdgpu_gfx float @extern_func(float %arg0)
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%add = fadd float %res, %val
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ret float %add
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}
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define amdgpu_gfx float @no_stack_extern_call_many_args(<64 x float> %arg0) #0 {
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%res = call amdgpu_gfx float @extern_func_many_args(<64 x float> %arg0)
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ret float %res
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}
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define amdgpu_gfx float @no_stack_indirect_call(float %arg0) #0 {
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%fptr = load ptr, ptr addrspace(4) @funcptr
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call amdgpu_gfx void %fptr()
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ret float %arg0
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}
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define amdgpu_gfx float @simple_stack_indirect_call(float %arg0) #0 {
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%stack = alloca float, i32 4, align 4, addrspace(5)
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store volatile float 2.0, ptr addrspace(5) %stack
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%val = load volatile float, ptr addrspace(5) %stack
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%fptr = load ptr, ptr addrspace(4) @funcptr
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call amdgpu_gfx void %fptr()
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%add = fadd float %arg0, %val
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ret float %add
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}
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define amdgpu_gfx float @simple_stack_recurse(float %arg0) #0 {
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%stack = alloca float, i32 4, align 4, addrspace(5)
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store volatile float 2.0, ptr addrspace(5) %stack
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%val = load volatile float, ptr addrspace(5) %stack
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%res = call amdgpu_gfx float @simple_stack_recurse(float %arg0)
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%add = fadd float %res, %val
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ret float %add
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}
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@lds = internal addrspace(3) global [64 x float] undef
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define amdgpu_gfx float @simple_lds(float %arg0) #0 {
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%val = load float, ptr addrspace(3) @lds
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ret float %val
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}
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define amdgpu_gfx float @simple_lds_recurse(float %arg0) #0 {
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%val = load float, ptr addrspace(3) @lds
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%res = call amdgpu_gfx float @simple_lds_recurse(float %val)
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ret float %res
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}
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attributes #0 = { nounwind }
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; GCN: amdpal.pipelines:
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; GCN-NEXT: - .registers:
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; GCN-NEXT: 0x2e12 (COMPUTE_PGM_RSRC1): 0xaf01ca{{$}}
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; GCN-NEXT: 0x2e13 (COMPUTE_PGM_RSRC2): 0x8001{{$}}
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; GCN-NEXT: .shader_functions:
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; GCN-NEXT: dynamic_stack:
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; GCN-NEXT: .backend_stack_size: 0x10{{$}}
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; GCN-NEXT: .lds_size: 0{{$}}
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; GCN-NEXT: .sgpr_count: 0x28{{$}}
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; GCN-NEXT: .stack_frame_size_in_bytes: 0x10{{$}}
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; SDAG-NEXT: .vgpr_count: 0x2{{$}}
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; GISEL-NEXT: .vgpr_count: 0x3{{$}}
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; GCN-NEXT: dynamic_stack_loop:
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; GCN-NEXT: .backend_stack_size: 0x10{{$}}
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; GCN-NEXT: .lds_size: 0{{$}}
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; SDAG-NEXT: .sgpr_count: 0x25{{$}}
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; GISEL-NEXT: .sgpr_count: 0x26{{$}}
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; GCN-NEXT: .stack_frame_size_in_bytes: 0x10{{$}}
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; SDAG-NEXT: .vgpr_count: 0x3{{$}}
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; GISEL-NEXT: .vgpr_count: 0x4{{$}}
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; GCN-NEXT: multiple_stack:
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; GCN-NEXT: .backend_stack_size: 0x24{{$}}
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; GCN-NEXT: .lds_size: 0{{$}}
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; GCN-NEXT: .sgpr_count: 0x21{{$}}
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; GCN-NEXT: .stack_frame_size_in_bytes: 0x24{{$}}
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; GCN-NEXT: .vgpr_count: 0x3{{$}}
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; GCN-NEXT: no_stack:
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; GCN-NEXT: .backend_stack_size: 0{{$}}
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; GCN-NEXT: .lds_size: 0{{$}}
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; GCN-NEXT: .sgpr_count: 0x20{{$}}
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; GCN-NEXT: .stack_frame_size_in_bytes: 0{{$}}
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; GCN-NEXT: .vgpr_count: 0x1{{$}}
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; GCN-NEXT: no_stack_call:
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; GCN-NEXT: .backend_stack_size: 0x10{{$}}
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; GCN-NEXT: .lds_size: 0{{$}}
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; GCN-NEXT: .sgpr_count: 0x25{{$}}
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; GCN-NEXT: .stack_frame_size_in_bytes: 0x10{{$}}
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; GCN-NEXT: .vgpr_count: 0x3{{$}}
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; GCN-NEXT: no_stack_extern_call:
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; GCN-NEXT: .backend_stack_size: 0x10{{$}}
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; GCN-NEXT: .lds_size: 0{{$}}
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; GFX8-NEXT: .sgpr_count: 0x28{{$}}
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; GFX9-NEXT: .sgpr_count: 0x2c{{$}}
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; GCN-NEXT: .stack_frame_size_in_bytes: 0x10{{$}}
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; GCN-NEXT: .vgpr_count: 0x2b{{$}}
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; GCN-NEXT: no_stack_extern_call_many_args:
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; GCN-NEXT: .backend_stack_size: 0x90{{$}}
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; GCN-NEXT: .lds_size: 0{{$}}
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; GFX8-NEXT: .sgpr_count: 0x28{{$}}
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; GFX9-NEXT: .sgpr_count: 0x2c{{$}}
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; GCN-NEXT: .stack_frame_size_in_bytes: 0x90{{$}}
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; GCN-NEXT: .vgpr_count: 0x2b{{$}}
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; GCN-NEXT: no_stack_indirect_call:
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; GCN-NEXT: .backend_stack_size: 0x10{{$}}
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; GCN-NEXT: .lds_size: 0{{$}}
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; GFX8-NEXT: .sgpr_count: 0x28{{$}}
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; GFX9-NEXT: .sgpr_count: 0x2c{{$}}
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; GCN-NEXT: .stack_frame_size_in_bytes: 0x10{{$}}
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; GCN-NEXT: .vgpr_count: 0x2b{{$}}
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; GCN-NEXT: simple_lds:
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; GCN-NEXT: .backend_stack_size: 0{{$}}
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; GCN-NEXT: .lds_size: 0x100{{$}}
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; GCN-NEXT: .sgpr_count: 0x20{{$}}
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; GCN-NEXT: .stack_frame_size_in_bytes: 0{{$}}
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; GCN-NEXT: .vgpr_count: 0x1{{$}}
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; GCN-NEXT: simple_lds_recurse:
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; GCN-NEXT: .backend_stack_size: 0x10{{$}}
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; GCN-NEXT: .lds_size: 0x100{{$}}
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; GCN-NEXT: .sgpr_count: 0x28{{$}}
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; GCN-NEXT: .stack_frame_size_in_bytes: 0x10{{$}}
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; GCN-NEXT: .vgpr_count: 0x29{{$}}
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; GCN-NEXT: simple_stack:
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; GCN-NEXT: .backend_stack_size: 0x14{{$}}
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; GCN-NEXT: .lds_size: 0{{$}}
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; GCN-NEXT: .sgpr_count: 0x21{{$}}
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; GCN-NEXT: .stack_frame_size_in_bytes: 0x14{{$}}
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; GCN-NEXT: .vgpr_count: 0x2{{$}}
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; GCN-NEXT: simple_stack_call:
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; GCN-NEXT: .backend_stack_size: 0x20{{$}}
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; GCN-NEXT: .lds_size: 0{{$}}
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; GCN-NEXT: .sgpr_count: 0x25{{$}}
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; GCN-NEXT: .stack_frame_size_in_bytes: 0x20{{$}}
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; GCN-NEXT: .vgpr_count: 0x4{{$}}
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; GCN-NEXT: simple_stack_extern_call:
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; GCN-NEXT: .backend_stack_size: 0x20{{$}}
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; GCN-NEXT: .lds_size: 0{{$}}
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; GFX8-NEXT: .sgpr_count: 0x28{{$}}
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; GFX9-NEXT: .sgpr_count: 0x2c{{$}}
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; GCN-NEXT: .stack_frame_size_in_bytes: 0x20{{$}}
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; GCN-NEXT: .vgpr_count: 0x2b{{$}}
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; GCN-NEXT: simple_stack_indirect_call:
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; GCN-NEXT: .backend_stack_size: 0x20{{$}}
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; GCN-NEXT: .lds_size: 0{{$}}
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; GFX8-NEXT: .sgpr_count: 0x28{{$}}
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; GFX9-NEXT: .sgpr_count: 0x2c{{$}}
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; GCN-NEXT: .stack_frame_size_in_bytes: 0x20{{$}}
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; GCN-NEXT: .vgpr_count: 0x2b{{$}}
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; GCN-NEXT: simple_stack_recurse:
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; GCN-NEXT: .backend_stack_size: 0x20{{$}}
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; GCN-NEXT: .lds_size: 0{{$}}
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; GCN-NEXT: .sgpr_count: 0x28{{$}}
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; GCN-NEXT: .stack_frame_size_in_bytes: 0x20{{$}}
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; GCN-NEXT: .vgpr_count: 0x2a{{$}}
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; GCN-NEXT: ...
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