llvm/test/CodeGen/LoongArch/get-rounding.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
; RUN: llc --mtriple=loongarch32 -mattr=+f < %s | FileCheck %s --check-prefix=LA32
; RUN: llc --mtriple=loongarch64 -mattr=+f < %s | FileCheck %s --check-prefix=LA64

define i32 @test_get_rounding() nounwind {
; LA32-LABEL: test_get_rounding:
; LA32:       # %bb.0:
; LA32-NEXT:    movfcsr2gr $a0, $fcsr3
; LA32-NEXT:    srli.w $a0, $a0, 8
; LA32-NEXT:    nor $a1, $a0, $zero
; LA32-NEXT:    srli.w $a1, $a1, 1
; LA32-NEXT:    andi $a1, $a1, 1
; LA32-NEXT:    xor $a0, $a0, $a1
; LA32-NEXT:    ret
;
; LA64-LABEL: test_get_rounding:
; LA64:       # %bb.0:
; LA64-NEXT:    movfcsr2gr $a0, $fcsr3
; LA64-NEXT:    srli.d $a0, $a0, 8
; LA64-NEXT:    nor $a1, $a0, $zero
; LA64-NEXT:    bstrpick.d $a1, $a1, 1, 1
; LA64-NEXT:    xor $a0, $a0, $a1
; LA64-NEXT:    ret
  %rm = call i32 @llvm.get.rounding()
  ret i32 %rm
}

define i1 @test_get_rounding_sideeffect() nounwind {
; LA32-LABEL: test_get_rounding_sideeffect:
; LA32:       # %bb.0: # %entry
; LA32-NEXT:    addi.w $sp, $sp, -16
; LA32-NEXT:    st.w $ra, $sp, 12 # 4-byte Folded Spill
; LA32-NEXT:    ori $a0, $zero, 1
; LA32-NEXT:    bl fesetround
; LA32-NEXT:    movfcsr2gr $a0, $fcsr3
; LA32-NEXT:    srli.w $a0, $a0, 8
; LA32-NEXT:    nor $a1, $a0, $zero
; LA32-NEXT:    srli.w $a1, $a1, 1
; LA32-NEXT:    andi $a1, $a1, 1
; LA32-NEXT:    xor $a0, $a0, $a1
; LA32-NEXT:    beq $a0, $zero, .LBB1_2
; LA32-NEXT:  # %bb.1:
; LA32-NEXT:    move $a0, $zero
; LA32-NEXT:    b .LBB1_3
; LA32-NEXT:  .LBB1_2: # %if.end
; LA32-NEXT:    move $a0, $zero
; LA32-NEXT:    bl fesetround
; LA32-NEXT:    movfcsr2gr $a0, $fcsr3
; LA32-NEXT:    srli.w $a0, $a0, 8
; LA32-NEXT:    nor $a1, $a0, $zero
; LA32-NEXT:    srli.w $a1, $a1, 1
; LA32-NEXT:    andi $a1, $a1, 1
; LA32-NEXT:    xor $a0, $a0, $a1
; LA32-NEXT:    addi.w $a0, $a0, -1
; LA32-NEXT:    sltui $a0, $a0, 1
; LA32-NEXT:  .LBB1_3: # %return
; LA32-NEXT:    ld.w $ra, $sp, 12 # 4-byte Folded Reload
; LA32-NEXT:    addi.w $sp, $sp, 16
; LA32-NEXT:    ret
;
; LA64-LABEL: test_get_rounding_sideeffect:
; LA64:       # %bb.0: # %entry
; LA64-NEXT:    addi.d $sp, $sp, -16
; LA64-NEXT:    st.d $ra, $sp, 8 # 8-byte Folded Spill
; LA64-NEXT:    ori $a0, $zero, 1
; LA64-NEXT:    pcaddu18i $ra, %call36(fesetround)
; LA64-NEXT:    jirl $ra, $ra, 0
; LA64-NEXT:    movfcsr2gr $a0, $fcsr3
; LA64-NEXT:    srli.d $a0, $a0, 8
; LA64-NEXT:    nor $a1, $a0, $zero
; LA64-NEXT:    bstrpick.d $a1, $a1, 1, 1
; LA64-NEXT:    xor $a0, $a0, $a1
; LA64-NEXT:    addi.w $a0, $a0, 0
; LA64-NEXT:    beqz $a0, .LBB1_2
; LA64-NEXT:  # %bb.1:
; LA64-NEXT:    move $a0, $zero
; LA64-NEXT:    b .LBB1_3
; LA64-NEXT:  .LBB1_2: # %if.end
; LA64-NEXT:    move $a0, $zero
; LA64-NEXT:    pcaddu18i $ra, %call36(fesetround)
; LA64-NEXT:    jirl $ra, $ra, 0
; LA64-NEXT:    movfcsr2gr $a0, $fcsr3
; LA64-NEXT:    srli.d $a0, $a0, 8
; LA64-NEXT:    nor $a1, $a0, $zero
; LA64-NEXT:    bstrpick.d $a1, $a1, 1, 1
; LA64-NEXT:    xor $a0, $a0, $a1
; LA64-NEXT:    addi.w $a0, $a0, 0
; LA64-NEXT:    addi.d $a0, $a0, -1
; LA64-NEXT:    sltui $a0, $a0, 1
; LA64-NEXT:  .LBB1_3: # %return
; LA64-NEXT:    ld.d $ra, $sp, 8 # 8-byte Folded Reload
; LA64-NEXT:    addi.d $sp, $sp, 16
; LA64-NEXT:    ret
entry:
  %call = tail call i32 @fesetround(i32 noundef 1)
  %0 = tail call i32 @llvm.get.rounding()
  %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)
  %1 = tail call i32 @llvm.get.rounding()
  %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
}

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