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llvm / llvm / 460838586d8b9581924d67161a425de6ba629ba8 / . / test / CodeGen / AMDGPU / mad-combine.ll
blob: 0b360f6ecefb5b5da73fff272dd79194617a889f [file] [log] [blame]
; Make sure we still form mad even when unsafe math or fp-contract is allowed instead of fma.
; RUN: llc -march=amdgcn -mcpu=tahiti -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefix=SI -check-prefix=SI-STD -check-prefix=SI-STD-SAFE -check-prefix=FUNC %s
; RUN: llc -march=amdgcn -mcpu=tahiti -verify-machineinstrs -fp-contract=fast < %s | FileCheck -enable-var-scope -check-prefix=SI -check-prefix=SI-STD -check-prefix=SI-STD-SAFE -check-prefix=FUNC %s
; RUN: llc -march=amdgcn -mcpu=tahiti -verify-machineinstrs -enable-unsafe-fp-math < %s | FileCheck -enable-var-scope -check-prefix=SI -check-prefix=SI-STD -check-prefix=SI-STD-UNSAFE -check-prefix=FUNC %s
; Make sure we don't form mad with denormals
; RUN: llc -march=amdgcn -mcpu=tahiti -mattr=+fp32-denormals -fp-contract=fast -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefix=SI -check-prefix=SI-DENORM -check-prefix=SI-DENORM-FASTFMAF -check-prefix=FUNC %s
; RUN: llc -march=amdgcn -mcpu=verde -mattr=+fp32-denormals -fp-contract=fast -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefix=SI -check-prefix=SI-DENORM -check-prefix=SI-DENORM-SLOWFMAF -check-prefix=FUNC %s
declare i32 @llvm.amdgcn.workitem.id.x() #0
declare float @llvm.fabs.f32(float) #0
declare float @llvm.fma.f32(float, float, float) #0
declare float @llvm.fmuladd.f32(float, float, float) #0
; (fadd (fmul x, y), z) -> (fma x, y, z)
; FUNC-LABEL: {{^}}combine_to_mad_f32_0:
; SI-DAG: buffer_load_dword [[A:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
; SI-DAG: buffer_load_dword [[B:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
; SI-DAG: buffer_load_dword [[C:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
; SI-STD: v_mac_f32_e32 [[C]], [[A]], [[B]]
; SI-DENORM-FASTFMAF: v_fma_f32 [[RESULT:v[0-9]+]], [[A]], [[B]], [[C]]
; SI-DENORM-SLOWFMAF-NOT: v_fma
; SI-DENORM-SLOWFMAF-NOT: v_mad
; SI-DENORM-SLOWFMAF: v_mul_f32_e32 [[TMP:v[0-9]+]], [[A]], [[B]]
; SI-DENORM-SLOWFMAF: v_add_f32_e32 [[RESULT:v[0-9]+]], [[TMP]], [[C]]
; SI-DENORM: buffer_store_dword [[RESULT]]
; SI-STD: buffer_store_dword [[C]]
define amdgpu_kernel void @combine_to_mad_f32_0(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) #1 {
%tid = tail call i32 @llvm.amdgcn.workitem.id.x() #0
%gep.0 = getelementptr float, float addrspace(1)* %in, i32 %tid
%gep.1 = getelementptr float, float addrspace(1)* %gep.0, i32 1
%gep.2 = getelementptr float, float addrspace(1)* %gep.0, i32 2
%gep.out = getelementptr float, float addrspace(1)* %out, i32 %tid
%a = load volatile float, float addrspace(1)* %gep.0
%b = load volatile float, float addrspace(1)* %gep.1
%c = load volatile float, float addrspace(1)* %gep.2
%mul = fmul float %a, %b
%fma = fadd float %mul, %c
store float %fma, float addrspace(1)* %gep.out
ret void
}
; (fadd (fmul x, y), z) -> (fma x, y, z)
; FUNC-LABEL: {{^}}combine_to_mad_f32_0_2use:
; SI-DAG: buffer_load_dword [[A:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
; SI-DAG: buffer_load_dword [[B:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
; SI-DAG: buffer_load_dword [[C:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
; SI-DAG: buffer_load_dword [[D:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:12{{$}}
; SI-STD-DAG: v_mac_f32_e32 [[C]], [[A]], [[B]]
; SI-STD-DAG: v_mac_f32_e32 [[D]], [[A]], [[B]]
; SI-DENORM-FASTFMAF-DAG: v_fma_f32 [[RESULT0:v[0-9]+]], [[A]], [[B]], [[C]]
; SI-DENORM-FASTFMAF-DAG: v_fma_f32 [[RESULT1:v[0-9]+]], [[A]], [[B]], [[D]]
; SI-DENORM-SLOWFMAF: v_mul_f32_e32 [[TMP:v[0-9]+]], [[A]], [[B]]
; SI-DENORM-SLOWFMAF-DAG: v_add_f32_e32 [[RESULT0:v[0-9]+]], [[TMP]], [[C]]
; SI-DENORM-SLOWFMAF-DAG: v_add_f32_e32 [[RESULT1:v[0-9]+]], [[TMP]], [[D]]
; SI-DENORM-DAG: buffer_store_dword [[RESULT0]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
; SI-DENORM-DAG: buffer_store_dword [[RESULT1]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
; SI-STD-DAG: buffer_store_dword [[C]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
; SI-STD-DAG: buffer_store_dword [[D]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
; SI: s_endpgm
define amdgpu_kernel void @combine_to_mad_f32_0_2use(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) #1 {
%tid = tail call i32 @llvm.amdgcn.workitem.id.x() #0
%gep.0 = getelementptr float, float addrspace(1)* %in, i32 %tid
%gep.1 = getelementptr float, float addrspace(1)* %gep.0, i32 1
%gep.2 = getelementptr float, float addrspace(1)* %gep.0, i32 2
%gep.3 = getelementptr float, float addrspace(1)* %gep.0, i32 3
%gep.out.0 = getelementptr float, float addrspace(1)* %out, i32 %tid
%gep.out.1 = getelementptr float, float addrspace(1)* %gep.out.0, i32 1
%a = load volatile float, float addrspace(1)* %gep.0
%b = load volatile float, float addrspace(1)* %gep.1
%c = load volatile float, float addrspace(1)* %gep.2
%d = load volatile float, float addrspace(1)* %gep.3
%mul = fmul float %a, %b
%fma0 = fadd float %mul, %c
%fma1 = fadd float %mul, %d
store volatile float %fma0, float addrspace(1)* %gep.out.0
store volatile float %fma1, float addrspace(1)* %gep.out.1
ret void
}
; (fadd x, (fmul y, z)) -> (fma y, z, x)
; FUNC-LABEL: {{^}}combine_to_mad_f32_1:
; SI-DAG: buffer_load_dword [[A:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
; SI-DAG: buffer_load_dword [[B:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
; SI-DAG: buffer_load_dword [[C:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
; SI-STD: v_mac_f32_e32 [[C]], [[A]], [[B]]
; SI-DENORM-FASTFMAF: v_fma_f32 [[RESULT:v[0-9]+]], [[A]], [[B]], [[C]]
; SI-DENORM-SLOWFMAF: v_mul_f32_e32 [[TMP:v[0-9]+]], [[A]], [[B]]
; SI-DENORM-SLOWFMAF: v_add_f32_e32 [[RESULT:v[0-9]+]], [[C]], [[TMP]]
; SI-DENORM: buffer_store_dword [[RESULT]]
; SI-STD: buffer_store_dword [[C]]
define amdgpu_kernel void @combine_to_mad_f32_1(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) #1 {
%tid = tail call i32 @llvm.amdgcn.workitem.id.x() #0
%gep.0 = getelementptr float, float addrspace(1)* %in, i32 %tid
%gep.1 = getelementptr float, float addrspace(1)* %gep.0, i32 1
%gep.2 = getelementptr float, float addrspace(1)* %gep.0, i32 2
%gep.out = getelementptr float, float addrspace(1)* %out, i32 %tid
%a = load volatile float, float addrspace(1)* %gep.0
%b = load volatile float, float addrspace(1)* %gep.1
%c = load volatile float, float addrspace(1)* %gep.2
%mul = fmul float %a, %b
%fma = fadd float %c, %mul
store float %fma, float addrspace(1)* %gep.out
ret void
}
; (fsub (fmul x, y), z) -> (fma x, y, (fneg z))
; FUNC-LABEL: {{^}}combine_to_mad_fsub_0_f32:
; SI-DAG: buffer_load_dword [[A:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
; SI-DAG: buffer_load_dword [[B:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
; SI-DAG: buffer_load_dword [[C:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
; SI-STD: v_mad_f32 [[RESULT:v[0-9]+]], [[A]], [[B]], -[[C]]
; SI-DENORM-FASTFMAF: v_fma_f32 [[RESULT:v[0-9]+]], [[A]], [[B]], -[[C]]
; SI-DENORM-SLOWFMAF: v_mul_f32_e32 [[TMP:v[0-9]+]], [[A]], [[B]]
; SI-DENORM-SLOWFMAF: v_sub_f32_e32 [[RESULT:v[0-9]+]], [[TMP]], [[C]]
; SI: buffer_store_dword [[RESULT]]
define amdgpu_kernel void @combine_to_mad_fsub_0_f32(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) #1 {
%tid = tail call i32 @llvm.amdgcn.workitem.id.x() #0
%gep.0 = getelementptr float, float addrspace(1)* %in, i32 %tid
%gep.1 = getelementptr float, float addrspace(1)* %gep.0, i32 1
%gep.2 = getelementptr float, float addrspace(1)* %gep.0, i32 2
%gep.out = getelementptr float, float addrspace(1)* %out, i32 %tid
%a = load volatile float, float addrspace(1)* %gep.0
%b = load volatile float, float addrspace(1)* %gep.1
%c = load volatile float, float addrspace(1)* %gep.2
%mul = fmul float %a, %b
%fma = fsub float %mul, %c
store float %fma, float addrspace(1)* %gep.out
ret void
}
; (fsub (fmul x, y), z) -> (fma x, y, (fneg z))
; FUNC-LABEL: {{^}}combine_to_mad_fsub_0_f32_2use:
; SI-DAG: buffer_load_dword [[A:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
; SI-DAG: buffer_load_dword [[B:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
; SI-DAG: buffer_load_dword [[C:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
; SI-DAG: buffer_load_dword [[D:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:12{{$}}
; SI-STD-DAG: v_mad_f32 [[RESULT0:v[0-9]+]], [[A]], [[B]], -[[C]]
; SI-STD-DAG: v_mad_f32 [[RESULT1:v[0-9]+]], [[A]], [[B]], -[[D]]
; SI-DENORM-FASTFMAF-DAG: v_fma_f32 [[RESULT0:v[0-9]+]], [[A]], [[B]], -[[C]]
; SI-DENORM-FASTFMAF-DAG: v_fma_f32 [[RESULT1:v[0-9]+]], [[A]], [[B]], -[[D]]
; SI-DENORM-SLOWFMAF: v_mul_f32_e32 [[TMP:v[0-9]+]], [[A]], [[B]]
; SI-DENORM-SLOWFMAF-DAG: v_sub_f32_e32 [[RESULT0:v[0-9]+]], [[TMP]], [[C]]
; SI-DENORM-SLOWFMAF-DAG: v_sub_f32_e32 [[RESULT1:v[0-9]+]], [[TMP]], [[D]]
; SI-DAG: buffer_store_dword [[RESULT0]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
; SI-DAG: buffer_store_dword [[RESULT1]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
; SI: s_endpgm
define amdgpu_kernel void @combine_to_mad_fsub_0_f32_2use(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) #1 {
%tid = tail call i32 @llvm.amdgcn.workitem.id.x() #0
%gep.0 = getelementptr float, float addrspace(1)* %in, i32 %tid
%gep.1 = getelementptr float, float addrspace(1)* %gep.0, i32 1
%gep.2 = getelementptr float, float addrspace(1)* %gep.0, i32 2
%gep.3 = getelementptr float, float addrspace(1)* %gep.0, i32 3
%gep.out.0 = getelementptr float, float addrspace(1)* %out, i32 %tid
%gep.out.1 = getelementptr float, float addrspace(1)* %gep.out.0, i32 1
%a = load volatile float, float addrspace(1)* %gep.0
%b = load volatile float, float addrspace(1)* %gep.1
%c = load volatile float, float addrspace(1)* %gep.2
%d = load volatile float, float addrspace(1)* %gep.3
%mul = fmul float %a, %b
%fma0 = fsub float %mul, %c
%fma1 = fsub float %mul, %d
store volatile float %fma0, float addrspace(1)* %gep.out.0
store volatile float %fma1, float addrspace(1)* %gep.out.1
ret void
}
; (fsub x, (fmul y, z)) -> (fma (fneg y), z, x)
; FUNC-LABEL: {{^}}combine_to_mad_fsub_1_f32:
; SI-DAG: buffer_load_dword [[A:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
; SI-DAG: buffer_load_dword [[B:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
; SI-DAG: buffer_load_dword [[C:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
; SI-STD: v_mad_f32 [[RESULT:v[0-9]+]], -[[A]], [[B]], [[C]]
; SI-DENORM-FASTFMAF: v_fma_f32 [[RESULT:v[0-9]+]], -[[A]], [[B]], [[C]]
; SI-DENORM-SLOWFMAF: v_mul_f32_e32 [[TMP:v[0-9]+]], [[A]], [[B]]
; SI-DENORM-SLOWFMAF: v_sub_f32_e32 [[RESULT:v[0-9]+]], [[C]], [[TMP]]
; SI: buffer_store_dword [[RESULT]]
define amdgpu_kernel void @combine_to_mad_fsub_1_f32(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) #1 {
%tid = tail call i32 @llvm.amdgcn.workitem.id.x() #0
%gep.0 = getelementptr float, float addrspace(1)* %in, i32 %tid
%gep.1 = getelementptr float, float addrspace(1)* %gep.0, i32 1
%gep.2 = getelementptr float, float addrspace(1)* %gep.0, i32 2
%gep.out = getelementptr float, float addrspace(1)* %out, i32 %tid
%a = load volatile float, float addrspace(1)* %gep.0
%b = load volatile float, float addrspace(1)* %gep.1
%c = load volatile float, float addrspace(1)* %gep.2
%mul = fmul float %a, %b
%fma = fsub float %c, %mul
store float %fma, float addrspace(1)* %gep.out
ret void
}
; (fsub x, (fmul y, z)) -> (fma (fneg y), z, x)
; FUNC-LABEL: {{^}}combine_to_mad_fsub_1_f32_2use:
; SI-DAG: buffer_load_dword [[A:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
; SI-DAG: buffer_load_dword [[B:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
; SI-DAG: buffer_load_dword [[C:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
; SI-DAG: buffer_load_dword [[D:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:12{{$}}
; SI-STD-DAG: v_mad_f32 [[RESULT0:v[0-9]+]], -[[A]], [[B]], [[C]]
; SI-STD-DAG: v_mad_f32 [[RESULT1:v[0-9]+]], -[[A]], [[B]], [[D]]
; SI-DENORM-FASTFMAF-DAG: v_fma_f32 [[RESULT0:v[0-9]+]], -[[A]], [[B]], [[C]]
; SI-DENORM-FASTFMAF-DAG: v_fma_f32 [[RESULT1:v[0-9]+]], -[[A]], [[B]], [[D]]
; SI-DENORM-SLOWFMAF: v_mul_f32_e32 [[TMP:v[0-9]+]], [[A]], [[B]]
; SI-DENORM-SLOWFMAF-DAG: v_sub_f32_e32 [[RESULT0:v[0-9]+]], [[C]], [[TMP]]
; SI-DENORM-SLOWFMAF-DAG: v_sub_f32_e32 [[RESULT1:v[0-9]+]], [[D]], [[TMP]]
; SI-DAG: buffer_store_dword [[RESULT0]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
; SI-DAG: buffer_store_dword [[RESULT1]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
; SI: s_endpgm
define amdgpu_kernel void @combine_to_mad_fsub_1_f32_2use(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) #1 {
%tid = tail call i32 @llvm.amdgcn.workitem.id.x() #0
%gep.0 = getelementptr float, float addrspace(1)* %in, i32 %tid
%gep.1 = getelementptr float, float addrspace(1)* %gep.0, i32 1
%gep.2 = getelementptr float, float addrspace(1)* %gep.0, i32 2
%gep.3 = getelementptr float, float addrspace(1)* %gep.0, i32 3
%gep.out.0 = getelementptr float, float addrspace(1)* %out, i32 %tid
%gep.out.1 = getelementptr float, float addrspace(1)* %gep.out.0, i32 1
%a = load volatile float, float addrspace(1)* %gep.0
%b = load volatile float, float addrspace(1)* %gep.1
%c = load volatile float, float addrspace(1)* %gep.2
%d = load volatile float, float addrspace(1)* %gep.3
%mul = fmul float %a, %b
%fma0 = fsub float %c, %mul
%fma1 = fsub float %d, %mul
store volatile float %fma0, float addrspace(1)* %gep.out.0
store volatile float %fma1, float addrspace(1)* %gep.out.1
ret void
}
; (fsub (fneg (fmul x, y)), z) -> (fma (fneg x), y, (fneg z))
; FUNC-LABEL: {{^}}combine_to_mad_fsub_2_f32:
; SI-DAG: buffer_load_dword [[A:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
; SI-DAG: buffer_load_dword [[B:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
; SI-DAG: buffer_load_dword [[C:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
; SI-STD: v_mad_f32 [[RESULT:v[0-9]+]], [[A]], -[[B]], -[[C]]
; SI-DENORM-FASTFMAF: v_fma_f32 [[RESULT:v[0-9]+]], -[[A]], [[B]], -[[C]]
; SI-DENORM-SLOWFMAF: v_mul_f32_e64 [[TMP:v[0-9]+]], [[A]], -[[B]]
; SI-DENORM-SLOWFMAF: v_sub_f32_e32 [[RESULT:v[0-9]+]], [[TMP]], [[C]]
; SI: buffer_store_dword [[RESULT]]
define amdgpu_kernel void @combine_to_mad_fsub_2_f32(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) #1 {
%tid = tail call i32 @llvm.amdgcn.workitem.id.x() #0
%gep.0 = getelementptr float, float addrspace(1)* %in, i32 %tid
%gep.1 = getelementptr float, float addrspace(1)* %gep.0, i32 1
%gep.2 = getelementptr float, float addrspace(1)* %gep.0, i32 2
%gep.out = getelementptr float, float addrspace(1)* %out, i32 %tid
%a = load volatile float, float addrspace(1)* %gep.0
%b = load volatile float, float addrspace(1)* %gep.1
%c = load volatile float, float addrspace(1)* %gep.2
%mul = fmul float %a, %b
%mul.neg = fsub float -0.0, %mul
%fma = fsub float %mul.neg, %c
store float %fma, float addrspace(1)* %gep.out
ret void
}
; (fsub (fneg (fmul x, y)), z) -> (fma (fneg x), y, (fneg z))
; FUNC-LABEL: {{^}}combine_to_mad_fsub_2_f32_2uses_neg:
; SI-DAG: buffer_load_dword [[A:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
; SI-DAG: buffer_load_dword [[B:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
; SI-DAG: buffer_load_dword [[C:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
; SI-DAG: buffer_load_dword [[D:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:12{{$}}
; SI-STD-DAG: v_mad_f32 [[RESULT0:v[0-9]+]], [[A]], -[[B]], -[[C]]
; SI-STD-DAG: v_mad_f32 [[RESULT1:v[0-9]+]], [[A]], -[[B]], -[[D]]
; SI-DENORM-FASTFMAF-DAG: v_fma_f32 [[RESULT0:v[0-9]+]], -[[A]], [[B]], -[[C]]
; SI-DENORM-FASTFMAF-DAG: v_fma_f32 [[RESULT1:v[0-9]+]], -[[A]], [[B]], -[[D]]
; SI-DENORM-SLOWFMAF: v_mul_f32_e64 [[TMP:v[0-9]+]], [[A]], -[[B]]
; SI-DENORM-SLOWFMAF-DAG: v_sub_f32_e32 [[RESULT0:v[0-9]+]], [[TMP]], [[C]]
; SI-DENORM-SLOWFMAF-DAG: v_sub_f32_e32 [[RESULT1:v[0-9]+]], [[TMP]], [[D]]
; SI-DAG: buffer_store_dword [[RESULT0]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
; SI-DAG: buffer_store_dword [[RESULT1]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
; SI: s_endpgm
define amdgpu_kernel void @combine_to_mad_fsub_2_f32_2uses_neg(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) #1 {
%tid = tail call i32 @llvm.amdgcn.workitem.id.x() #0
%gep.0 = getelementptr float, float addrspace(1)* %in, i32 %tid
%gep.1 = getelementptr float, float addrspace(1)* %gep.0, i32 1
%gep.2 = getelementptr float, float addrspace(1)* %gep.0, i32 2
%gep.3 = getelementptr float, float addrspace(1)* %gep.0, i32 3
%gep.out.0 = getelementptr float, float addrspace(1)* %out, i32 %tid
%gep.out.1 = getelementptr float, float addrspace(1)* %gep.out.0, i32 1
%a = load volatile float, float addrspace(1)* %gep.0
%b = load volatile float, float addrspace(1)* %gep.1
%c = load volatile float, float addrspace(1)* %gep.2
%d = load volatile float, float addrspace(1)* %gep.3
%mul = fmul float %a, %b
%mul.neg = fsub float -0.0, %mul
%fma0 = fsub float %mul.neg, %c
%fma1 = fsub float %mul.neg, %d
store volatile float %fma0, float addrspace(1)* %gep.out.0
store volatile float %fma1, float addrspace(1)* %gep.out.1
ret void
}
; (fsub (fneg (fmul x, y)), z) -> (fma (fneg x), y, (fneg z))
; FUNC-LABEL: {{^}}combine_to_mad_fsub_2_f32_2uses_mul:
; SI-DAG: buffer_load_dword [[A:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
; SI-DAG: buffer_load_dword [[B:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
; SI-DAG: buffer_load_dword [[C:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
; SI-DAG: buffer_load_dword [[D:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:12{{$}}
; SI-STD-DAG: v_mad_f32 [[RESULT0:v[0-9]+]], -[[A]], [[B]], -[[C]]
; SI-STD-DAG: v_mad_f32 [[RESULT1:v[0-9]+]], [[A]], [[B]], -[[D]]
; SI-DENORM-FASTFMAF-DAG: v_fma_f32 [[RESULT0:v[0-9]+]], -[[A]], [[B]], -[[C]]
; SI-DENORM-FASTFMAF-DAG: v_fma_f32 [[RESULT1:v[0-9]+]], [[A]], [[B]], -[[D]]
; SI-DENORM-SLOWFMAF: v_mul_f32_e32 [[TMP:v[0-9]+]], [[A]], [[B]]
; SI-DENORM-SLOWFMAF-DAG: v_sub_f32_e64 [[RESULT0:v[0-9]+]], -[[TMP]], [[C]]
; SI-DENORM-SLOWFMAF-DAG: v_sub_f32_e32 [[RESULT1:v[0-9]+]], [[TMP]], [[D]]
; SI-DAG: buffer_store_dword [[RESULT0]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
; SI-DAG: buffer_store_dword [[RESULT1]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
; SI: s_endpgm
define amdgpu_kernel void @combine_to_mad_fsub_2_f32_2uses_mul(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) #1 {
%tid = tail call i32 @llvm.amdgcn.workitem.id.x() #0
%gep.0 = getelementptr float, float addrspace(1)* %in, i32 %tid
%gep.1 = getelementptr float, float addrspace(1)* %gep.0, i32 1
%gep.2 = getelementptr float, float addrspace(1)* %gep.0, i32 2
%gep.3 = getelementptr float, float addrspace(1)* %gep.0, i32 3
%gep.out.0 = getelementptr float, float addrspace(1)* %out, i32 %tid
%gep.out.1 = getelementptr float, float addrspace(1)* %gep.out.0, i32 1
%a = load volatile float, float addrspace(1)* %gep.0
%b = load volatile float, float addrspace(1)* %gep.1
%c = load volatile float, float addrspace(1)* %gep.2
%d = load volatile float, float addrspace(1)* %gep.3
%mul = fmul float %a, %b
%mul.neg = fsub float -0.0, %mul
%fma0 = fsub float %mul.neg, %c
%fma1 = fsub float %mul, %d
store volatile float %fma0, float addrspace(1)* %gep.out.0
store volatile float %fma1, float addrspace(1)* %gep.out.1
ret void
}
; fold (fsub (fma x, y, (fmul u, v)), z) -> (fma x, y (fma u, v, (fneg z)))
; FUNC-LABEL: {{^}}aggressive_combine_to_mad_fsub_0_f32:
; SI-DAG: buffer_load_dword [[A:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
; SI-DAG: buffer_load_dword [[B:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
; SI-DAG: buffer_load_dword [[C:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
; SI-DAG: buffer_load_dword [[D:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:12{{$}}
; SI-DAG: buffer_load_dword [[E:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:16{{$}}
; SI-STD: v_mul_f32_e32 [[TMP0:v[0-9]+]], [[D]], [[E]]
; SI-STD: v_fma_f32 [[TMP1:v[0-9]+]], [[A]], [[B]], [[TMP0]]
; SI-STD: v_sub_f32_e32 [[RESULT:v[0-9]+]], [[TMP1]], [[C]]
; SI-DENORM: v_mul_f32_e32 [[TMP0:v[0-9]+]], [[D]], [[E]]
; SI-DENORM: v_fma_f32 [[TMP1:v[0-9]+]], [[A]], [[B]], [[TMP0]]
; SI-DENORM: v_sub_f32_e32 [[RESULT:v[0-9]+]], [[TMP1]], [[C]]
; SI: buffer_store_dword [[RESULT]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
define amdgpu_kernel void @aggressive_combine_to_mad_fsub_0_f32(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) #1 {
%tid = tail call i32 @llvm.amdgcn.workitem.id.x() #0
%gep.0 = getelementptr float, float addrspace(1)* %in, i32 %tid
%gep.1 = getelementptr float, float addrspace(1)* %gep.0, i32 1
%gep.2 = getelementptr float, float addrspace(1)* %gep.0, i32 2
%gep.3 = getelementptr float, float addrspace(1)* %gep.0, i32 3
%gep.4 = getelementptr float, float addrspace(1)* %gep.0, i32 4
%gep.out = getelementptr float, float addrspace(1)* %out, i32 %tid
%x = load volatile float, float addrspace(1)* %gep.0
%y = load volatile float, float addrspace(1)* %gep.1
%z = load volatile float, float addrspace(1)* %gep.2
%u = load volatile float, float addrspace(1)* %gep.3
%v = load volatile float, float addrspace(1)* %gep.4
%tmp0 = fmul float %u, %v
%tmp1 = call float @llvm.fma.f32(float %x, float %y, float %tmp0) #0
%tmp2 = fsub float %tmp1, %z
store float %tmp2, float addrspace(1)* %gep.out
ret void
}
; fold (fsub x, (fma y, z, (fmul u, v)))
; -> (fma (fneg y), z, (fma (fneg u), v, x))
; FUNC-LABEL: {{^}}aggressive_combine_to_mad_fsub_1_f32:
; SI-DAG: buffer_load_dword [[A:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
; SI-DAG: buffer_load_dword [[B:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
; SI-DAG: buffer_load_dword [[C:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
; SI-DAG: buffer_load_dword [[D:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:12{{$}}
; SI-DAG: buffer_load_dword [[E:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:16{{$}}
; SI-STD: v_mul_f32_e32 [[TMP0:v[0-9]+]], [[D]], [[E]]
; SI-STD: v_fma_f32 [[TMP1:v[0-9]+]], [[B]], [[C]], [[TMP0]]
; SI-STD: v_sub_f32_e32 [[RESULT:v[0-9]+]], [[A]], [[TMP1]]
; SI-DENORM: v_mul_f32_e32 [[TMP0:v[0-9]+]], [[D]], [[E]]
; SI-DENORM: v_fma_f32 [[TMP1:v[0-9]+]], [[B]], [[C]], [[TMP0]]
; SI-DENORM: v_sub_f32_e32 [[RESULT:v[0-9]+]], [[A]], [[TMP1]]
; SI: buffer_store_dword [[RESULT]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
; SI: s_endpgm
define amdgpu_kernel void @aggressive_combine_to_mad_fsub_1_f32(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) #1 {
%tid = tail call i32 @llvm.amdgcn.workitem.id.x() #0
%gep.0 = getelementptr float, float addrspace(1)* %in, i32 %tid
%gep.1 = getelementptr float, float addrspace(1)* %gep.0, i32 1
%gep.2 = getelementptr float, float addrspace(1)* %gep.0, i32 2
%gep.3 = getelementptr float, float addrspace(1)* %gep.0, i32 3
%gep.4 = getelementptr float, float addrspace(1)* %gep.0, i32 4
%gep.out = getelementptr float, float addrspace(1)* %out, i32 %tid
%x = load volatile float, float addrspace(1)* %gep.0
%y = load volatile float, float addrspace(1)* %gep.1
%z = load volatile float, float addrspace(1)* %gep.2
%u = load volatile float, float addrspace(1)* %gep.3
%v = load volatile float, float addrspace(1)* %gep.4
%tmp0 = fmul float %u, %v
%tmp1 = call float @llvm.fma.f32(float %y, float %z, float %tmp0) #0
%tmp2 = fsub float %x, %tmp1
store float %tmp2, float addrspace(1)* %gep.out
ret void
}
; fold (fsub (fma x, y, (fmul u, v)), z) -> (fma x, y (fma u, v, (fneg z)))
; FUNC-LABEL: {{^}}aggressive_combine_to_mad_fsub_2_f32:
; SI-DAG: buffer_load_dword [[A:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
; SI-DAG: buffer_load_dword [[B:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
; SI-DAG: buffer_load_dword [[C:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
; SI-DAG: buffer_load_dword [[D:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:12{{$}}
; SI-DAG: buffer_load_dword [[E:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:16{{$}}
; SI-STD-SAFE: v_mul_f32_e32 [[TMP0:v[0-9]+]], [[D]], [[E]]
; SI-STD-SAFE: v_mac_f32_e32 [[TMP0]], [[A]], [[B]]
; SI-STD-SAFE: v_sub_f32_e32 [[RESULT:v[0-9]+]], [[TMP0]], [[C]]
; SI-STD-UNSAFE: v_mad_f32 [[RESULT:v[0-9]+]], [[D]], [[E]], -[[C]]
; SI-STD-UNSAFE: v_mac_f32_e32 [[RESULT]], [[A]], [[B]]
; SI-DENORM-FASTFMAF: v_mul_f32_e32 [[TMP0:v[0-9]+]], [[D]], [[E]]
; SI-DENORM-FASTFMAF: v_fma_f32 [[TMP1:v[0-9]+]], [[A]], [[B]], [[TMP0]]
; SI-DENORM-FASTFMAF: v_sub_f32_e32 [[RESULT:v[0-9]+]], [[TMP1]], [[C]]
; SI-DENORM-SLOWFMAF-DAG: v_mul_f32_e32 [[TMP0:v[0-9]+]], [[D]], [[E]]
; SI-DENORM-SLOWFMAF-DAG: v_mul_f32_e32 [[TMP1:v[0-9]+]], [[A]], [[B]]
; SI-DENORM-SLOWFMAF: v_add_f32_e32 [[TMP2:v[0-9]+]], [[TMP1]], [[TMP0]]
; SI-DENORM-SLOWFMAF: v_sub_f32_e32 [[RESULT:v[0-9]+]], [[TMP2]], [[C]]
; SI: buffer_store_dword [[RESULT]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
; SI: s_endpgm
define amdgpu_kernel void @aggressive_combine_to_mad_fsub_2_f32(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) #1 {
%tid = tail call i32 @llvm.amdgcn.workitem.id.x() #0
%gep.0 = getelementptr float, float addrspace(1)* %in, i32 %tid
%gep.1 = getelementptr float, float addrspace(1)* %gep.0, i32 1
%gep.2 = getelementptr float, float addrspace(1)* %gep.0, i32 2
%gep.3 = getelementptr float, float addrspace(1)* %gep.0, i32 3
%gep.4 = getelementptr float, float addrspace(1)* %gep.0, i32 4
%gep.out = getelementptr float, float addrspace(1)* %out, i32 %tid
%x = load volatile float, float addrspace(1)* %gep.0
%y = load volatile float, float addrspace(1)* %gep.1
%z = load volatile float, float addrspace(1)* %gep.2
%u = load volatile float, float addrspace(1)* %gep.3
%v = load volatile float, float addrspace(1)* %gep.4
%tmp0 = fmul float %u, %v
%tmp1 = call float @llvm.fmuladd.f32(float %x, float %y, float %tmp0) #0
%tmp2 = fsub float %tmp1, %z
store float %tmp2, float addrspace(1)* %gep.out
ret void
}
; fold (fsub x, (fmuladd y, z, (fmul u, v)))
; -> (fmuladd (fneg y), z, (fmuladd (fneg u), v, x))
; FUNC-LABEL: {{^}}aggressive_combine_to_mad_fsub_3_f32:
; SI-DAG: buffer_load_dword [[A:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
; SI-DAG: buffer_load_dword [[B:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
; SI-DAG: buffer_load_dword [[C:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
; SI-DAG: buffer_load_dword [[D:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:12{{$}}
; SI-DAG: buffer_load_dword [[E:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:16{{$}}
; SI-STD-SAFE: v_mul_f32_e32 [[TMP0:v[0-9]+]], [[D]], [[E]]
; SI-STD-SAFE: v_mac_f32_e32 [[TMP0]], [[B]], [[C]]
; SI-STD-SAFE: v_sub_f32_e32 [[RESULT:v[0-9]+]], [[A]], [[TMP0]]
; SI-STD-UNSAFE: v_mad_f32 [[TMP:v[0-9]+]], -[[D]], [[E]], [[A]]
; SI-STD-UNSAFE: v_mad_f32 [[RESULT:v[0-9]+]], -[[B]], [[C]], [[TMP]]
; SI-DENORM-FASTFMAF: v_mul_f32_e32 [[TMP0:v[0-9]+]], [[D]], [[E]]
; SI-DENORM-FASTFMAF: v_fma_f32 [[TMP1:v[0-9]+]], [[B]], [[C]], [[TMP0]]
; SI-DENORM-FASTFMAF: v_sub_f32_e32 [[RESULT:v[0-9]+]], [[A]], [[TMP1]]
; SI-DENORM-SLOWFMAF-DAG: v_mul_f32_e32 [[TMP0:v[0-9]+]], [[D]], [[E]]
; SI-DENORM-SLOWFMAF-DAG: v_mul_f32_e32 [[TMP1:v[0-9]+]], [[B]], [[C]]
; SI-DENORM-SLOWFMAF: v_add_f32_e32 [[TMP2:v[0-9]+]], [[TMP1]], [[TMP0]]
; SI-DENORM-SLOWFMAF: v_sub_f32_e32 [[RESULT:v[0-9]+]], [[A]], [[TMP2]]
; SI: buffer_store_dword [[RESULT]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
; SI: s_endpgm
define amdgpu_kernel void @aggressive_combine_to_mad_fsub_3_f32(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) #1 {
%tid = tail call i32 @llvm.amdgcn.workitem.id.x() #0
%gep.0 = getelementptr float, float addrspace(1)* %in, i32 %tid
%gep.1 = getelementptr float, float addrspace(1)* %gep.0, i32 1
%gep.2 = getelementptr float, float addrspace(1)* %gep.0, i32 2
%gep.3 = getelementptr float, float addrspace(1)* %gep.0, i32 3
%gep.4 = getelementptr float, float addrspace(1)* %gep.0, i32 4
%gep.out = getelementptr float, float addrspace(1)* %out, i32 %tid
%x = load volatile float, float addrspace(1)* %gep.0
%y = load volatile float, float addrspace(1)* %gep.1
%z = load volatile float, float addrspace(1)* %gep.2
%u = load volatile float, float addrspace(1)* %gep.3
%v = load volatile float, float addrspace(1)* %gep.4
%tmp0 = fmul float %u, %v
%tmp1 = call float @llvm.fmuladd.f32(float %y, float %z, float %tmp0) #0
%tmp2 = fsub float %x, %tmp1
store float %tmp2, float addrspace(1)* %gep.out
ret void
}
attributes #0 = { nounwind readnone }
attributes #1 = { nounwind }