llvm-project/llvm/test/CodeGen/AMDGPU/calling-conventions.ll

; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=GCN -check-prefix=SI %s
; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck -check-prefix=GCN -check-prefix=VI %s

; Make sure we don't crash or assert on spir_kernel calling convention.

; GCN-LABEL: {{^}}kernel:
; GCN: s_endpgm
define spir_kernel void @kernel(i32 addrspace(1)* %out) {
entry:
  store i32 0, i32 addrspace(1)* %out
  ret void
}

; FIXME: This is treated like a kernel
; XGCN-LABEL: {{^}}func:
; XGCN: s_endpgm
; define spir_func void @func(i32 addrspace(1)* %out) {
; entry:
;   store i32 0, i32 addrspace(1)* %out
;   ret void
; }

; GCN-LABEL: {{^}}ps_ret_cc_f16:
; SI: v_cvt_f16_f32_e32 v0, v0
; SI: v_cvt_f32_f16_e32 v0, v0
; SI: v_add_f32_e32 v0, 1.0, v0

; VI: v_add_f16_e32 v0, 1.0, v0
; VI: ; return
define amdgpu_ps half @ps_ret_cc_f16(half %arg0) {
  %add = fadd half %arg0, 1.0
  ret half %add
}

; GCN-LABEL: {{^}}ps_ret_cc_inreg_f16:
; SI: v_cvt_f16_f32_e32 v0, s0
; SI: v_cvt_f32_f16_e32 v0, v0
; SI: v_add_f32_e32 v0, 1.0, v0

; VI: v_add_f16_e64 v0, s0, 1.0
; VI: ; return
define amdgpu_ps half @ps_ret_cc_inreg_f16(half inreg %arg0) {
  %add = fadd half %arg0, 1.0
  ret half %add
}

; GCN-LABEL: {{^}}fastcc:
; GCN: v_add_f32_e32 v0, 4.0, v0
define fastcc float @fastcc(float %arg0) #0 {
  %add = fadd float %arg0, 4.0
  ret float %add
}

; GCN-LABEL: {{^}}coldcc:
; GCN: v_add_f32_e32 v0, 4.0, v0
define coldcc float @coldcc(float %arg0) #0 {
 %add = fadd float %arg0, 4.0
 ret float %add
}

; GCN-LABEL: {{^}}call_coldcc:
; GCN: v_mov_b32_e32 v0, 1.0
; GCN: s_swappc_b64
define amdgpu_kernel void @call_coldcc() #0 {
  %val = call float @coldcc(float 1.0)
  store float %val, float addrspace(1)* undef
  ret void
}

; GCN-LABEL: {{^}}call_fastcc:
; GCN: v_mov_b32_e32 v0, 1.0
; GCN: s_swappc_b64
define amdgpu_kernel void @call_fastcc() #0 {
  %val = call float @fastcc(float 1.0)
  store float %val, float addrspace(1)* undef
  ret void
}

; Mesa compute shader: check for 47176 (COMPUTE_PGM_RSRC1) in .AMDGPU.config
; GCN-LABEL: .AMDGPU.config
; GCN: .long  47176
; GCN-LABEL: {{^}}cs_mesa:
define amdgpu_cs half @cs_mesa(half %arg0) {
  %add = fadd half %arg0, 1.0
  ret half %add
}

; Mesa pixel shader: check for 45096 (SPI_SHADER_PGM_RSRC1_PS) in .AMDGPU.config
; GCN-LABEL: .AMDGPU.config
; GCN: .long  45096
; GCN-LABEL: {{^}}ps_mesa:
define amdgpu_ps half @ps_mesa(half %arg0) {
  %add = fadd half %arg0, 1.0
  ret half %add
}

; Mesa vertex shader: check for 45352 (SPI_SHADER_PGM_RSRC1_VS) in .AMDGPU.config
; GCN-LABEL: .AMDGPU.config
; GCN: .long  45352
; GCN-LABEL: {{^}}vs_mesa:
define amdgpu_vs half @vs_mesa(half %arg0) {
  %add = fadd half %arg0, 1.0
  ret half %add
}

; Mesa geometry shader: check for 45608 (SPI_SHADER_PGM_RSRC1_GS) in .AMDGPU.config
; GCN-LABEL: .AMDGPU.config
; GCN: .long  45608
; GCN-LABEL: {{^}}gs_mesa:
define amdgpu_gs half @gs_mesa(half %arg0) {
  %add = fadd half %arg0, 1.0
  ret half %add
}

; Mesa hull shader: check for 46120 (SPI_SHADER_PGM_RSRC1_HS) in .AMDGPU.config
; GCN-LABEL: .AMDGPU.config
; GCN: .long  46120
; GCN-LABEL: {{^}}hs_mesa:
define amdgpu_hs half @hs_mesa(half %arg0) {
  %add = fadd half %arg0, 1.0
  ret half %add
}

attributes #0 = { nounwind noinline }