llvm/test/CodeGen/AMDGPU/scalar-float-sop2.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=amdgcn -mcpu=gfx1150 -verify-machineinstrs < %s | FileCheck %s
; RUN: llc -mtriple=amdgcn -mcpu=gfx1150 -global-isel -verify-machineinstrs < %s | FileCheck %s

define amdgpu_vs float @fadd_f32(float inreg %a, float inreg %b) {
; CHECK-LABEL: fadd_f32:
; CHECK:       ; %bb.0:
; CHECK-NEXT:    s_add_f32 s0, s0, s1
; CHECK-NEXT:    s_delay_alu instid0(SALU_CYCLE_3)
; CHECK-NEXT:    v_mov_b32_e32 v0, s0
; CHECK-NEXT:    ; return to shader part epilog
   %add = fadd float %a, %b
   ret float %add
}

define amdgpu_vs float @fsub_f32(float inreg %a, float inreg %b) {
; CHECK-LABEL: fsub_f32:
; CHECK:       ; %bb.0:
; CHECK-NEXT:    s_sub_f32 s0, s0, s1
; CHECK-NEXT:    s_delay_alu instid0(SALU_CYCLE_3)
; CHECK-NEXT:    v_mov_b32_e32 v0, s0
; CHECK-NEXT:    ; return to shader part epilog
   %sub = fsub float %a, %b
   ret float %sub
}

define amdgpu_vs float @fmul_f32(float inreg %a, float inreg %b) {
; CHECK-LABEL: fmul_f32:
; CHECK:       ; %bb.0:
; CHECK-NEXT:    s_mul_f32 s0, s0, s1
; CHECK-NEXT:    s_delay_alu instid0(SALU_CYCLE_3)
; CHECK-NEXT:    v_mov_b32_e32 v0, s0
; CHECK-NEXT:    ; return to shader part epilog
   %mul = fmul float %a, %b
   ret float %mul
}

define amdgpu_vs float @fmin_f32(float inreg %a, float inreg %b) {
; CHECK-LABEL: fmin_f32:
; CHECK:       ; %bb.0:
; CHECK-NEXT:    s_min_f32 s0, s0, s1
; CHECK-NEXT:    s_delay_alu instid0(SALU_CYCLE_3)
; CHECK-NEXT:    v_mov_b32_e32 v0, s0
; CHECK-NEXT:    ; return to shader part epilog
   %min = call float @llvm.minnum.f32(float %a, float %b)
   ret float %min
}

define amdgpu_vs float @fmax_f32(float inreg %a, float inreg %b) {
; CHECK-LABEL: fmax_f32:
; CHECK:       ; %bb.0:
; CHECK-NEXT:    s_max_f32 s0, s0, s1
; CHECK-NEXT:    s_delay_alu instid0(SALU_CYCLE_3)
; CHECK-NEXT:    v_mov_b32_e32 v0, s0
; CHECK-NEXT:    ; return to shader part epilog
   %max = call float @llvm.maxnum.f32(float %a, float %b)
   ret float %max
}

define amdgpu_vs half @fadd_f16(half inreg %a, half inreg %b) {
; CHECK-LABEL: fadd_f16:
; CHECK:       ; %bb.0:
; CHECK-NEXT:    s_add_f16 s0, s0, s1
; CHECK-NEXT:    s_delay_alu instid0(SALU_CYCLE_3)
; CHECK-NEXT:    v_mov_b32_e32 v0, s0
; CHECK-NEXT:    ; return to shader part epilog
   %add = fadd half %a, %b
   ret half %add
}

define amdgpu_vs half @fsub_f16(half inreg %a, half inreg %b) {
; CHECK-LABEL: fsub_f16:
; CHECK:       ; %bb.0:
; CHECK-NEXT:    s_sub_f16 s0, s0, s1
; CHECK-NEXT:    s_delay_alu instid0(SALU_CYCLE_3)
; CHECK-NEXT:    v_mov_b32_e32 v0, s0
; CHECK-NEXT:    ; return to shader part epilog
   %sub = fsub half %a, %b
   ret half %sub
}

define amdgpu_vs half @fmul_f16(half inreg %a, half inreg %b) {
; CHECK-LABEL: fmul_f16:
; CHECK:       ; %bb.0:
; CHECK-NEXT:    s_mul_f16 s0, s0, s1
; CHECK-NEXT:    s_delay_alu instid0(SALU_CYCLE_3)
; CHECK-NEXT:    v_mov_b32_e32 v0, s0
; CHECK-NEXT:    ; return to shader part epilog
   %mul = fmul half %a, %b
   ret half %mul
}

define amdgpu_vs half @fmin_f16(half inreg %a, half inreg %b) {
; CHECK-LABEL: fmin_f16:
; CHECK:       ; %bb.0:
; CHECK-NEXT:    s_min_f16 s0, s0, s1
; CHECK-NEXT:    s_delay_alu instid0(SALU_CYCLE_3)
; CHECK-NEXT:    v_mov_b32_e32 v0, s0
; CHECK-NEXT:    ; return to shader part epilog
   %min = call half @llvm.minnum.f16(half %a, half %b)
   ret half %min
}

define amdgpu_vs half @fmax_f16(half inreg %a, half inreg %b) {
; CHECK-LABEL: fmax_f16:
; CHECK:       ; %bb.0:
; CHECK-NEXT:    s_max_f16 s0, s0, s1
; CHECK-NEXT:    s_delay_alu instid0(SALU_CYCLE_3)
; CHECK-NEXT:    v_mov_b32_e32 v0, s0
; CHECK-NEXT:    ; return to shader part epilog
   %max = call half @llvm.maxnum.f16(half %a, half %b)
   ret half %max
}

define amdgpu_vs <2 x half> @s_cvt_pkrtz_v2f16_f32(float inreg %x, float inreg %y) {
; CHECK-LABEL: s_cvt_pkrtz_v2f16_f32:
; CHECK:       ; %bb.0:
; CHECK-NEXT:    s_cvt_pk_rtz_f16_f32 s0, s0, s1
; CHECK-NEXT:    s_delay_alu instid0(SALU_CYCLE_3)
; CHECK-NEXT:    v_mov_b32_e32 v0, s0
; CHECK-NEXT:    ; return to shader part epilog
  %result = call <2 x half> @llvm.amdgcn.cvt.pkrtz(float %x, float %y)
  ret <2 x half> %result
}

define amdgpu_vs float @fmac_f32(float inreg %a, float inreg %b, float inreg %c) {
; CHECK-LABEL: fmac_f32:
; CHECK:       ; %bb.0:
; CHECK-NEXT:    s_fmac_f32 s0, s1, s2
; CHECK-NEXT:    s_delay_alu instid0(SALU_CYCLE_3)
; CHECK-NEXT:    v_mov_b32_e32 v0, s0
; CHECK-NEXT:    ; return to shader part epilog
  %res = call float @llvm.fma.f32(float %b, float %c, float %a)
  ret float %res
}

; Check selection of mov + fmac if src2 of fmac has a use later on
define amdgpu_vs float @fmac_f32_with_mov(float inreg %a, float inreg %b, float inreg %c) {
; CHECK-LABEL: fmac_f32_with_mov:
; CHECK:       ; %bb.0:
; CHECK-NEXT:    s_mov_b32 s3, s2
; CHECK-NEXT:    s_delay_alu instid0(SALU_CYCLE_1) | instskip(NEXT) | instid1(SALU_CYCLE_3)
; CHECK-NEXT:    s_fmac_f32 s3, s0, s1
; CHECK-NEXT:    s_add_f32 s0, s3, s2
; CHECK-NEXT:    s_delay_alu instid0(SALU_CYCLE_3)
; CHECK-NEXT:    v_mov_b32_e32 v0, s0
; CHECK-NEXT:    ; return to shader part epilog
  %fma = call float @llvm.fma.f32(float %a, float %b, float %c)
  %res = fadd float %fma, %c
  ret float %res
}

define amdgpu_vs half @fmac_f16(half inreg %a, half inreg %b, half inreg %c) {
; CHECK-LABEL: fmac_f16:
; CHECK:       ; %bb.0:
; CHECK-NEXT:    s_fmac_f16 s0, s1, s2
; CHECK-NEXT:    s_delay_alu instid0(SALU_CYCLE_3)
; CHECK-NEXT:    v_mov_b32_e32 v0, s0
; CHECK-NEXT:    ; return to shader part epilog
  %res = call half @llvm.fma.f16(half %b, half %c, half %a)
  ret half %res
}

; Check selection of mov + fmac if src2 of fmac has a use later
define amdgpu_vs half @fmac_f16_with_mov(half inreg %a, half inreg %b, half inreg %c) {
; CHECK-LABEL: fmac_f16_with_mov:
; CHECK:       ; %bb.0:
; CHECK-NEXT:    s_mov_b32 s3, s2
; CHECK-NEXT:    s_delay_alu instid0(SALU_CYCLE_1) | instskip(NEXT) | instid1(SALU_CYCLE_3)
; CHECK-NEXT:    s_fmac_f16 s3, s0, s1
; CHECK-NEXT:    s_add_f16 s0, s3, s2
; CHECK-NEXT:    s_delay_alu instid0(SALU_CYCLE_3)
; CHECK-NEXT:    v_mov_b32_e32 v0, s0
; CHECK-NEXT:    ; return to shader part epilog
  %fma = call half @llvm.fma.f16(half %a, half %b, half %c)
  %res = fadd half %fma, %c
  ret half %res
}

; Regression test for crash in SIFoldOperands
define amdgpu_ps float @_amdgpu_ps_main() {
; CHECK-LABEL: _amdgpu_ps_main:
; CHECK:       ; %bb.0: ; %bb
; CHECK-NEXT:    s_mov_b32 s0, 0
; CHECK-NEXT:    s_delay_alu instid0(SALU_CYCLE_1)
; CHECK-NEXT:    s_mov_b32 s1, s0
; CHECK-NEXT:    s_mov_b32 s2, s0
; CHECK-NEXT:    s_mov_b32 s3, s0
; CHECK-NEXT:    s_buffer_load_b64 s[0:1], s[0:3], 0x0
; CHECK-NEXT:    s_waitcnt lgkmcnt(0)
; CHECK-NEXT:    s_fmamk_f32 s0, s1, 0x40800000, s0
; CHECK-NEXT:    s_delay_alu instid0(SALU_CYCLE_3)
; CHECK-NEXT:    v_mov_b32_e32 v0, s0
; CHECK-NEXT:    ; return to shader part epilog
bb:
  %i = call i32 @llvm.amdgcn.s.buffer.load.i32(<4 x i32> zeroinitializer, i32 0, i32 0)
  %i1 = bitcast i32 %i to float
  %i2 = call i32 @llvm.amdgcn.s.buffer.load.i32(<4 x i32> zeroinitializer, i32 4, i32 0)
  %i3 = bitcast i32 %i2 to float
  %i4 = fmul contract float %i3, 4.0
  %i5 = fadd contract float %i4, %i1
  ret float %i5
}

declare i32 @llvm.amdgcn.s.buffer.load.i32(<4 x i32>, i32, i32 immarg)
declare float @llvm.minnum.f32(float, float)
declare float @llvm.maxnum.f32(float, float)
declare half @llvm.minnum.f16(half, half)
declare half @llvm.maxnum.f16(half, half)
declare <2 x half> @llvm.amdgcn.cvt.pkrtz(float, float)
declare float @llvm.fma.f32(float, float, float) nounwind readnone
declare half @llvm.fma.f16(half, half, half) nounwind readnone