llvm/test/CodeGen/RISCV/fpenv.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=riscv32 -mattr=+f -verify-machineinstrs < %s | FileCheck -check-prefix=RV32IF %s
; RUN: llc -mtriple=riscv64 -mattr=+f -verify-machineinstrs < %s | FileCheck -check-prefix=RV64IF %s

define i32 @func_01() {
; RV32IF-LABEL: func_01:
; RV32IF:       # %bb.0:
; RV32IF-NEXT:    frrm a0
; RV32IF-NEXT:    lui a1, 66
; RV32IF-NEXT:    slli a0, a0, 2
; RV32IF-NEXT:    addi a1, a1, 769
; RV32IF-NEXT:    srl a0, a1, a0
; RV32IF-NEXT:    andi a0, a0, 7
; RV32IF-NEXT:    ret
;
; RV64IF-LABEL: func_01:
; RV64IF:       # %bb.0:
; RV64IF-NEXT:    frrm a0
; RV64IF-NEXT:    lui a1, 66
; RV64IF-NEXT:    slli a0, a0, 2
; RV64IF-NEXT:    addi a1, a1, 769
; RV64IF-NEXT:    srl a0, a1, a0
; RV64IF-NEXT:    andi a0, a0, 7
; RV64IF-NEXT:    ret
  %rm = call i32 @llvm.get.rounding()
  ret i32 %rm
}

define i1 @test_get_rounding_sideeffect() #0 {
; RV32IF-LABEL: test_get_rounding_sideeffect:
; RV32IF:       # %bb.0: # %entry
; RV32IF-NEXT:    addi sp, sp, -16
; RV32IF-NEXT:    .cfi_def_cfa_offset 16
; RV32IF-NEXT:    sw ra, 12(sp) # 4-byte Folded Spill
; RV32IF-NEXT:    sw s0, 8(sp) # 4-byte Folded Spill
; RV32IF-NEXT:    .cfi_offset ra, -4
; RV32IF-NEXT:    .cfi_offset s0, -8
; RV32IF-NEXT:    li a0, 1
; RV32IF-NEXT:    call fesetround
; RV32IF-NEXT:    frrm a0
; RV32IF-NEXT:    lui a1, 66
; RV32IF-NEXT:    slli a0, a0, 2
; RV32IF-NEXT:    addi s0, a1, 769
; RV32IF-NEXT:    srl a0, s0, a0
; RV32IF-NEXT:    andi a0, a0, 7
; RV32IF-NEXT:    beqz a0, .LBB1_2
; RV32IF-NEXT:  # %bb.1:
; RV32IF-NEXT:    li a0, 0
; RV32IF-NEXT:    j .LBB1_3
; RV32IF-NEXT:  .LBB1_2: # %if.end
; RV32IF-NEXT:    call fesetround
; RV32IF-NEXT:    frrm a0
; RV32IF-NEXT:    slli a0, a0, 2
; RV32IF-NEXT:    srl a0, s0, a0
; RV32IF-NEXT:    andi a0, a0, 7
; RV32IF-NEXT:    addi a0, a0, -1
; RV32IF-NEXT:    seqz a0, a0
; RV32IF-NEXT:  .LBB1_3: # %return
; RV32IF-NEXT:    lw ra, 12(sp) # 4-byte Folded Reload
; RV32IF-NEXT:    lw s0, 8(sp) # 4-byte Folded Reload
; RV32IF-NEXT:    .cfi_restore ra
; RV32IF-NEXT:    .cfi_restore s0
; RV32IF-NEXT:    addi sp, sp, 16
; RV32IF-NEXT:    .cfi_def_cfa_offset 0
; RV32IF-NEXT:    ret
;
; RV64IF-LABEL: test_get_rounding_sideeffect:
; RV64IF:       # %bb.0: # %entry
; RV64IF-NEXT:    addi sp, sp, -16
; RV64IF-NEXT:    .cfi_def_cfa_offset 16
; RV64IF-NEXT:    sd ra, 8(sp) # 8-byte Folded Spill
; RV64IF-NEXT:    sd s0, 0(sp) # 8-byte Folded Spill
; RV64IF-NEXT:    .cfi_offset ra, -8
; RV64IF-NEXT:    .cfi_offset s0, -16
; RV64IF-NEXT:    li a0, 1
; RV64IF-NEXT:    call fesetround
; RV64IF-NEXT:    frrm a0
; RV64IF-NEXT:    lui a1, 66
; RV64IF-NEXT:    slli a0, a0, 2
; RV64IF-NEXT:    addi s0, a1, 769
; RV64IF-NEXT:    srl a0, s0, a0
; RV64IF-NEXT:    andi a0, a0, 7
; RV64IF-NEXT:    beqz a0, .LBB1_2
; RV64IF-NEXT:  # %bb.1:
; RV64IF-NEXT:    li a0, 0
; RV64IF-NEXT:    j .LBB1_3
; RV64IF-NEXT:  .LBB1_2: # %if.end
; RV64IF-NEXT:    call fesetround
; RV64IF-NEXT:    frrm a0
; RV64IF-NEXT:    slli a0, a0, 2
; RV64IF-NEXT:    srl a0, s0, a0
; RV64IF-NEXT:    andi a0, a0, 7
; RV64IF-NEXT:    addi a0, a0, -1
; RV64IF-NEXT:    seqz a0, a0
; RV64IF-NEXT:  .LBB1_3: # %return
; RV64IF-NEXT:    ld ra, 8(sp) # 8-byte Folded Reload
; RV64IF-NEXT:    ld s0, 0(sp) # 8-byte Folded Reload
; RV64IF-NEXT:    .cfi_restore ra
; RV64IF-NEXT:    .cfi_restore s0
; RV64IF-NEXT:    addi sp, sp, 16
; RV64IF-NEXT:    .cfi_def_cfa_offset 0
; RV64IF-NEXT:    ret
entry:
  %call = tail call i32 @fesetround(i32 noundef 1) #0
  %0 = tail call i32 @llvm.get.rounding() #0
  %cmp.not = icmp eq i32 %0, 0
  br i1 %cmp.not, label %if.end, label %return

if.end:
  %call1 = tail call i32 @fesetround(i32 noundef 0) #0
  %1 = tail call i32 @llvm.get.rounding() #0
  %cmp2.not = icmp eq i32 %1, 1
  br label %return

return:
  %retval.0 = phi i1 [ false, %entry ], [ %cmp2.not, %if.end ]
  ret i1 %retval.0
}

define void @func_02(i32 %rm) {
; RV32IF-LABEL: func_02:
; RV32IF:       # %bb.0:
; RV32IF-NEXT:    slli a0, a0, 2
; RV32IF-NEXT:    lui a1, 66
; RV32IF-NEXT:    addi a1, a1, 769
; RV32IF-NEXT:    srl a0, a1, a0
; RV32IF-NEXT:    andi a0, a0, 7
; RV32IF-NEXT:    fsrm a0
; RV32IF-NEXT:    ret
;
; RV64IF-LABEL: func_02:
; RV64IF:       # %bb.0:
; RV64IF-NEXT:    slli a0, a0, 32
; RV64IF-NEXT:    lui a1, 66
; RV64IF-NEXT:    srli a0, a0, 30
; RV64IF-NEXT:    addi a1, a1, 769
; RV64IF-NEXT:    srl a0, a1, a0
; RV64IF-NEXT:    andi a0, a0, 7
; RV64IF-NEXT:    fsrm a0
; RV64IF-NEXT:    ret
  call void @llvm.set.rounding(i32 %rm)
  ret void
}

define void @func_03() {
; RV32IF-LABEL: func_03:
; RV32IF:       # %bb.0:
; RV32IF-NEXT:    fsrmi 1
; RV32IF-NEXT:    ret
;
; RV64IF-LABEL: func_03:
; RV64IF:       # %bb.0:
; RV64IF-NEXT:    fsrmi 1
; RV64IF-NEXT:    ret
  call void @llvm.set.rounding(i32 0)
  ret void
}

define void @func_04() {
; RV32IF-LABEL: func_04:
; RV32IF:       # %bb.0:
; RV32IF-NEXT:    fsrmi 0
; RV32IF-NEXT:    ret
;
; RV64IF-LABEL: func_04:
; RV64IF:       # %bb.0:
; RV64IF-NEXT:    fsrmi 0
; RV64IF-NEXT:    ret
  call void @llvm.set.rounding(i32 1)
  ret void
}

define void @func_05() {
; RV32IF-LABEL: func_05:
; RV32IF:       # %bb.0:
; RV32IF-NEXT:    fsrmi 3
; RV32IF-NEXT:    ret
;
; RV64IF-LABEL: func_05:
; RV64IF:       # %bb.0:
; RV64IF-NEXT:    fsrmi 3
; RV64IF-NEXT:    ret
  call void @llvm.set.rounding(i32 2)
  ret void
}

define void @func_06() {
; RV32IF-LABEL: func_06:
; RV32IF:       # %bb.0:
; RV32IF-NEXT:    fsrmi 2
; RV32IF-NEXT:    ret
;
; RV64IF-LABEL: func_06:
; RV64IF:       # %bb.0:
; RV64IF-NEXT:    fsrmi 2
; RV64IF-NEXT:    ret
  call void @llvm.set.rounding(i32 3)
  ret void
}

define void @func_07() {
; RV32IF-LABEL: func_07:
; RV32IF:       # %bb.0:
; RV32IF-NEXT:    fsrmi 4
; RV32IF-NEXT:    ret
;
; RV64IF-LABEL: func_07:
; RV64IF:       # %bb.0:
; RV64IF-NEXT:    fsrmi 4
; RV64IF-NEXT:    ret
  call void @llvm.set.rounding(i32 4)
  ret void
}

attributes #0 = { strictfp }

declare void @llvm.set.rounding(i32)
declare i32 @llvm.get.rounding()
declare i32 @fesetround(i32 noundef)