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llvm/test/CodeGen/AMDGPU/mad-sub.ll
Tom Stellard f5be357d37 AMDGPU/SI: Select mad patterns to v_mac_f32 
The two-address instruction pass will convert these back to v_mad_f32
if necessary.

Differential Revision: http://reviews.llvm.org/D11060

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242038 91177308-0d34-0410-b5e6-96231b3b80d8
2015-07-13 15:47:57 +00:00

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9.5 KiB
LLVM
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; RUN: llc -march=amdgcn -mcpu=SI -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
declare i32 @llvm.r600.read.tidig.x() #0
declare float @llvm.fabs.f32(float) #0
; FUNC-LABEL: {{^}}mad_sub_f32:
; SI: buffer_load_dword [[REGA:v[0-9]+]]
; SI: buffer_load_dword [[REGB:v[0-9]+]]
; SI: buffer_load_dword [[REGC:v[0-9]+]]
; SI: v_mad_f32 [[RESULT:v[0-9]+]], [[REGA]], [[REGB]], -[[REGC]]
; SI: buffer_store_dword [[RESULT]]
define void @mad_sub_f32(float addrspace(1)* noalias nocapture %out, float addrspace(1)* noalias nocapture readonly %ptr) #1 {
%tid = tail call i32 @llvm.r600.read.tidig.x() #0
%tid.ext = sext i32 %tid to i64
%gep0 = getelementptr float, float addrspace(1)* %ptr, i64 %tid.ext
%add1 = add i64 %tid.ext, 1
%gep1 = getelementptr float, float addrspace(1)* %ptr, i64 %add1
%add2 = add i64 %tid.ext, 2
%gep2 = getelementptr float, float addrspace(1)* %ptr, i64 %add2
%outgep = getelementptr float, float addrspace(1)* %out, i64 %tid.ext
%a = load float, float addrspace(1)* %gep0, align 4
%b = load float, float addrspace(1)* %gep1, align 4
%c = load float, float addrspace(1)* %gep2, align 4
%mul = fmul float %a, %b
%sub = fsub float %mul, %c
store float %sub, float addrspace(1)* %outgep, align 4
ret void
}
; FUNC-LABEL: {{^}}mad_sub_inv_f32:
; SI: buffer_load_dword [[REGA:v[0-9]+]]
; SI: buffer_load_dword [[REGB:v[0-9]+]]
; SI: buffer_load_dword [[REGC:v[0-9]+]]
; SI: v_mad_f32 [[RESULT:v[0-9]+]], -[[REGA]], [[REGB]], [[REGC]]
; SI: buffer_store_dword [[RESULT]]
define void @mad_sub_inv_f32(float addrspace(1)* noalias nocapture %out, float addrspace(1)* noalias nocapture readonly %ptr) #1 {
%tid = tail call i32 @llvm.r600.read.tidig.x() #0
%tid.ext = sext i32 %tid to i64
%gep0 = getelementptr float, float addrspace(1)* %ptr, i64 %tid.ext
%add1 = add i64 %tid.ext, 1
%gep1 = getelementptr float, float addrspace(1)* %ptr, i64 %add1
%add2 = add i64 %tid.ext, 2
%gep2 = getelementptr float, float addrspace(1)* %ptr, i64 %add2
%outgep = getelementptr float, float addrspace(1)* %out, i64 %tid.ext
%a = load float, float addrspace(1)* %gep0, align 4
%b = load float, float addrspace(1)* %gep1, align 4
%c = load float, float addrspace(1)* %gep2, align 4
%mul = fmul float %a, %b
%sub = fsub float %c, %mul
store float %sub, float addrspace(1)* %outgep, align 4
ret void
}
; FUNC-LABEL: {{^}}mad_sub_f64:
; SI: v_mul_f64
; SI: v_add_f64
define void @mad_sub_f64(double addrspace(1)* noalias nocapture %out, double addrspace(1)* noalias nocapture readonly %ptr) #1 {
%tid = tail call i32 @llvm.r600.read.tidig.x() #0
%tid.ext = sext i32 %tid to i64
%gep0 = getelementptr double, double addrspace(1)* %ptr, i64 %tid.ext
%add1 = add i64 %tid.ext, 1
%gep1 = getelementptr double, double addrspace(1)* %ptr, i64 %add1
%add2 = add i64 %tid.ext, 2
%gep2 = getelementptr double, double addrspace(1)* %ptr, i64 %add2
%outgep = getelementptr double, double addrspace(1)* %out, i64 %tid.ext
%a = load double, double addrspace(1)* %gep0, align 8
%b = load double, double addrspace(1)* %gep1, align 8
%c = load double, double addrspace(1)* %gep2, align 8
%mul = fmul double %a, %b
%sub = fsub double %mul, %c
store double %sub, double addrspace(1)* %outgep, align 8
ret void
}
; FUNC-LABEL: {{^}}mad_sub_fabs_f32:
; SI: buffer_load_dword [[REGA:v[0-9]+]]
; SI: buffer_load_dword [[REGB:v[0-9]+]]
; SI: buffer_load_dword [[REGC:v[0-9]+]]
; SI: v_mad_f32 [[RESULT:v[0-9]+]], [[REGA]], [[REGB]], -|[[REGC]]|
; SI: buffer_store_dword [[RESULT]]
define void @mad_sub_fabs_f32(float addrspace(1)* noalias nocapture %out, float addrspace(1)* noalias nocapture readonly %ptr) #1 {
%tid = tail call i32 @llvm.r600.read.tidig.x() #0
%tid.ext = sext i32 %tid to i64
%gep0 = getelementptr float, float addrspace(1)* %ptr, i64 %tid.ext
%add1 = add i64 %tid.ext, 1
%gep1 = getelementptr float, float addrspace(1)* %ptr, i64 %add1
%add2 = add i64 %tid.ext, 2
%gep2 = getelementptr float, float addrspace(1)* %ptr, i64 %add2
%outgep = getelementptr float, float addrspace(1)* %out, i64 %tid.ext
%a = load float, float addrspace(1)* %gep0, align 4
%b = load float, float addrspace(1)* %gep1, align 4
%c = load float, float addrspace(1)* %gep2, align 4
%c.abs = call float @llvm.fabs.f32(float %c) #0
%mul = fmul float %a, %b
%sub = fsub float %mul, %c.abs
store float %sub, float addrspace(1)* %outgep, align 4
ret void
}
; FUNC-LABEL: {{^}}mad_sub_fabs_inv_f32:
; SI: buffer_load_dword [[REGA:v[0-9]+]]
; SI: buffer_load_dword [[REGB:v[0-9]+]]
; SI: buffer_load_dword [[REGC:v[0-9]+]]
; SI: v_mad_f32 [[RESULT:v[0-9]+]], -[[REGA]], [[REGB]], |[[REGC]]|
; SI: buffer_store_dword [[RESULT]]
define void @mad_sub_fabs_inv_f32(float addrspace(1)* noalias nocapture %out, float addrspace(1)* noalias nocapture readonly %ptr) #1 {
%tid = tail call i32 @llvm.r600.read.tidig.x() #0
%tid.ext = sext i32 %tid to i64
%gep0 = getelementptr float, float addrspace(1)* %ptr, i64 %tid.ext
%add1 = add i64 %tid.ext, 1
%gep1 = getelementptr float, float addrspace(1)* %ptr, i64 %add1
%add2 = add i64 %tid.ext, 2
%gep2 = getelementptr float, float addrspace(1)* %ptr, i64 %add2
%outgep = getelementptr float, float addrspace(1)* %out, i64 %tid.ext
%a = load float, float addrspace(1)* %gep0, align 4
%b = load float, float addrspace(1)* %gep1, align 4
%c = load float, float addrspace(1)* %gep2, align 4
%c.abs = call float @llvm.fabs.f32(float %c) #0
%mul = fmul float %a, %b
%sub = fsub float %c.abs, %mul
store float %sub, float addrspace(1)* %outgep, align 4
ret void
}
; FUNC-LABEL: {{^}}neg_neg_mad_f32:
; SI: v_mac_f32_e32 {{v[0-9]+}}, {{v[0-9]+}}, {{v[0-9]+}}
define void @neg_neg_mad_f32(float addrspace(1)* noalias nocapture %out, float addrspace(1)* noalias nocapture readonly %ptr) #1 {
%tid = tail call i32 @llvm.r600.read.tidig.x() #0
%tid.ext = sext i32 %tid to i64
%gep0 = getelementptr float, float addrspace(1)* %ptr, i64 %tid.ext
%add1 = add i64 %tid.ext, 1
%gep1 = getelementptr float, float addrspace(1)* %ptr, i64 %add1
%add2 = add i64 %tid.ext, 2
%gep2 = getelementptr float, float addrspace(1)* %ptr, i64 %add2
%outgep = getelementptr float, float addrspace(1)* %out, i64 %tid.ext
%a = load float, float addrspace(1)* %gep0, align 4
%b = load float, float addrspace(1)* %gep1, align 4
%c = load float, float addrspace(1)* %gep2, align 4
%nega = fsub float -0.000000e+00, %a
%negb = fsub float -0.000000e+00, %b
%mul = fmul float %nega, %negb
%sub = fadd float %mul, %c
store float %sub, float addrspace(1)* %outgep, align 4
ret void
}
; FUNC-LABEL: {{^}}mad_fabs_sub_f32:
; SI: buffer_load_dword [[REGA:v[0-9]+]]
; SI: buffer_load_dword [[REGB:v[0-9]+]]
; SI: buffer_load_dword [[REGC:v[0-9]+]]
; SI: v_mad_f32 [[RESULT:v[0-9]+]], [[REGA]], |[[REGB]]|, -[[REGC]]
; SI: buffer_store_dword [[RESULT]]
define void @mad_fabs_sub_f32(float addrspace(1)* noalias nocapture %out, float addrspace(1)* noalias nocapture readonly %ptr) #1 {
%tid = tail call i32 @llvm.r600.read.tidig.x() #0
%tid.ext = sext i32 %tid to i64
%gep0 = getelementptr float, float addrspace(1)* %ptr, i64 %tid.ext
%add1 = add i64 %tid.ext, 1
%gep1 = getelementptr float, float addrspace(1)* %ptr, i64 %add1
%add2 = add i64 %tid.ext, 2
%gep2 = getelementptr float, float addrspace(1)* %ptr, i64 %add2
%outgep = getelementptr float, float addrspace(1)* %out, i64 %tid.ext
%a = load float, float addrspace(1)* %gep0, align 4
%b = load float, float addrspace(1)* %gep1, align 4
%c = load float, float addrspace(1)* %gep2, align 4
%b.abs = call float @llvm.fabs.f32(float %b) #0
%mul = fmul float %a, %b.abs
%sub = fsub float %mul, %c
store float %sub, float addrspace(1)* %outgep, align 4
ret void
}
; FUNC-LABEL: {{^}}fsub_c_fadd_a_a:
; SI-DAG: buffer_load_dword [[R1:v[0-9]+]], {{v\[[0-9]+:[0-9]+\]}}, {{s\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
; SI-DAG: buffer_load_dword [[R2:v[0-9]+]], {{v\[[0-9]+:[0-9]+\]}}, {{s\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4
; SI: v_mac_f32_e32 [[R2]], -2.0, [[R1]]
; SI: buffer_store_dword [[R2]]
define void @fsub_c_fadd_a_a(float addrspace(1)* %out, float addrspace(1)* %in) {
%tid = call i32 @llvm.r600.read.tidig.x() nounwind readnone
%gep.0 = getelementptr float, float addrspace(1)* %out, i32 %tid
%gep.1 = getelementptr float, float addrspace(1)* %gep.0, i32 1
%gep.out = getelementptr float, float addrspace(1)* %out, i32 %tid
%r1 = load float, float addrspace(1)* %gep.0
%r2 = load float, float addrspace(1)* %gep.1
%add = fadd float %r1, %r1
%r3 = fsub float %r2, %add
store float %r3, float addrspace(1)* %gep.out
ret void
}
; FUNC-LABEL: {{^}}fsub_fadd_a_a_c:
; SI-DAG: buffer_load_dword [[R1:v[0-9]+]], {{v\[[0-9]+:[0-9]+\]}}, {{s\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
; SI-DAG: buffer_load_dword [[R2:v[0-9]+]], {{v\[[0-9]+:[0-9]+\]}}, {{s\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4
; SI: v_mad_f32 [[RESULT:v[0-9]+]], 2.0, [[R1]], -[[R2]]
; SI: buffer_store_dword [[RESULT]]
define void @fsub_fadd_a_a_c(float addrspace(1)* %out, float addrspace(1)* %in) {
%tid = call i32 @llvm.r600.read.tidig.x() nounwind readnone
%gep.0 = getelementptr float, float addrspace(1)* %out, i32 %tid
%gep.1 = getelementptr float, float addrspace(1)* %gep.0, i32 1
%gep.out = getelementptr float, float addrspace(1)* %out, i32 %tid
%r1 = load float, float addrspace(1)* %gep.0
%r2 = load float, float addrspace(1)* %gep.1
%add = fadd float %r1, %r1
%r3 = fsub float %add, %r2
store float %r3, float addrspace(1)* %gep.out
ret void
}
attributes #0 = { nounwind readnone }
attributes #1 = { nounwind }
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