test/CodeGen/Mips/pseudo-jump-fill.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=mipsel-linux-gnu -mattr=+micromips -relocation-model=pic < %s | FileCheck %s

; Test that the delay slot filler correctly handles indirect branches for
; microMIPS in regard to incorrectly using 16bit instructions in delay slots of
; 32bit instructions.

define i32 @test(i32 signext %x, i32 signext %c) {
; CHECK-LABEL: test:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    lui $2, %hi(_gp_disp)
; CHECK-NEXT:    addiu $2, $2, %lo(_gp_disp)
; CHECK-NEXT:    addiur2 $5, $5, -1
; CHECK-NEXT:    sltiu $1, $5, 4
; CHECK-NEXT:    beqz $1, $BB0_3
; CHECK-NEXT:    addu $3, $2, $25
; CHECK-NEXT:  $BB0_1: # %entry
; CHECK-NEXT:    li16 $2, 0
; CHECK-NEXT:    sll16 $5, $5, 2
; CHECK-NEXT:    lw $6, %got($JTI0_0)($3)
; CHECK-NEXT:    addu16 $5, $5, $6
; CHECK-NEXT:    lw $5, %lo($JTI0_0)($5)
; CHECK-NEXT:    addu16 $3, $5, $3
; CHECK-NEXT:    jr $3
; CHECK-NEXT:    nop
; CHECK-NEXT:  $BB0_2: # %sw.bb2
; CHECK-NEXT:    addiur2 $2, $4, 1
; CHECK-NEXT:    jrc $ra
; CHECK-NEXT:  $BB0_3:
; CHECK-NEXT:    move $2, $4
; CHECK-NEXT:    jrc $ra
; CHECK-NEXT:  $BB0_4: # %sw.bb3
; CHECK-NEXT:    addius5 $4, 2
; CHECK-NEXT:    move $2, $4
; CHECK-NEXT:    jrc $ra
; CHECK-NEXT:  $BB0_5: # %sw.bb5
; CHECK-NEXT:    addius5 $4, 3
; CHECK-NEXT:    move $2, $4
; CHECK-NEXT:  $BB0_6: # %for.cond.cleanup
; CHECK-NEXT:    jrc $ra
entry:
  switch i32 %c, label %sw.epilog [
    i32 4, label %sw.bb5
    i32 1, label %for.cond.cleanup
    i32 2, label %sw.bb2
    i32 3, label %sw.bb3
  ]

sw.bb2:
  %add = add nsw i32 %x, 1
  br label %sw.epilog

sw.bb3:
  %add4 = add nsw i32 %x, 2
  br label %sw.epilog

sw.bb5:
  %add6 = add nsw i32 %x, 3
  br label %sw.epilog

sw.epilog:
  %a.0 = phi i32 [ %add6, %sw.bb5 ], [ %add4, %sw.bb3 ], [ %add, %sw.bb2 ], [ %x, %entry ]
  br label %for.cond.cleanup

for.cond.cleanup:
  %a.028 = phi i32 [ %a.0, %sw.epilog ], [ 0, %entry ]
  ret i32 %a.028
}