llvm/test/CodeGen/MSP430/cmp-imm-high-bit.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
; RUN: llc -mtriple=msp430 < %s | FileCheck %s

; Regression tests for EmitCMP folding of LHS constants whose i16 high bit is
; set. These exercise the four EmitCMP branches that turn `c CMP rhs` into
; `rhs CMP' c+1`. The constant addition must use APInt arithmetic at the
; original bit width; computing it via getSExtValue() and then handing the
; resulting int64_t to getConstant(uint64_t, ..., MVT::i16) trips the
; isUIntN(16, val) assertion in the APInt constructor for any constant with
; bit 15 set.

define i16 @cmp_ule_high_bit(i16 %a) nounwind {
; CHECK-LABEL: cmp_ule_high_bit:
; CHECK:       ; %bb.0:
; CHECK-NEXT:    cmp #-32767, r12
; CHECK-NEXT:    mov #1, r12
; CHECK-NEXT:    bic r2, r12
; CHECK-NEXT:    ret
  %t = icmp ule i16 %a, 32768
  %r = zext i1 %t to i16
  ret i16 %r
}

define i16 @cmp_ugt_high_bit(i16 %a) nounwind {
; CHECK-LABEL: cmp_ugt_high_bit:
; CHECK:       ; %bb.0:
; CHECK-NEXT:    cmp #-32767, r12
; CHECK-NEXT:    mov r2, r12
; CHECK-NEXT:    and #1, r12
; CHECK-NEXT:    ret
  %t = icmp ugt i16 %a, 32768
  %r = zext i1 %t to i16
  ret i16 %r
}

define i16 @cmp_sle_neg_high_bit(i16 %a) nounwind {
; CHECK-LABEL: cmp_sle_neg_high_bit:
; CHECK:       ; %bb.0:
; CHECK-NEXT:    mov r12, r13
; CHECK-NEXT:    mov #1, r12
; CHECK-NEXT:    cmp #-32766, r13
; CHECK-NEXT:    jl .LBB2_2
; CHECK-NEXT:  ; %bb.1:
; CHECK-NEXT:    clr r12
; CHECK-NEXT:  .LBB2_2:
; CHECK-NEXT:    ret
  %t = icmp sle i16 %a, -32767
  %r = zext i1 %t to i16
  ret i16 %r
}

define i16 @cmp_sgt_neg_high_bit(i16 %a) nounwind {
; CHECK-LABEL: cmp_sgt_neg_high_bit:
; CHECK:       ; %bb.0:
; CHECK-NEXT:    mov r12, r13
; CHECK-NEXT:    mov #1, r12
; CHECK-NEXT:    cmp #-32766, r13
; CHECK-NEXT:    jge .LBB3_2
; CHECK-NEXT:  ; %bb.1:
; CHECK-NEXT:    clr r12
; CHECK-NEXT:  .LBB3_2:
; CHECK-NEXT:    ret
  %t = icmp sgt i16 %a, -32767
  %r = zext i1 %t to i16
  ret i16 %r
}

define i16 @cmp_ule_int_max(i16 %a) nounwind {
; CHECK-LABEL: cmp_ule_int_max:
; CHECK:       ; %bb.0:
; CHECK-NEXT:    mov r12, r13
; CHECK-NEXT:    mov #1, r12
; CHECK-NEXT:    tst r13
; CHECK-NEXT:    jge .LBB4_2
; CHECK-NEXT:  ; %bb.1:
; CHECK-NEXT:    clr r12
; CHECK-NEXT:  .LBB4_2:
; CHECK-NEXT:    ret
  %t = icmp ule i16 %a, 32767
  %r = zext i1 %t to i16
  ret i16 %r
}

define i16 @cmp_ugt_int_max(i16 %a) nounwind {
; CHECK-LABEL: cmp_ugt_int_max:
; CHECK:       ; %bb.0:
; CHECK-NEXT:    mov r12, r13
; CHECK-NEXT:    mov #1, r12
; CHECK-NEXT:    tst r13
; CHECK-NEXT:    jl .LBB5_2
; CHECK-NEXT:  ; %bb.1:
; CHECK-NEXT:    clr r12
; CHECK-NEXT:  .LBB5_2:
; CHECK-NEXT:    ret
  %t = icmp ugt i16 %a, 32767
  %r = zext i1 %t to i16
  ret i16 %r
}

define i16 @cmp_sle_int_max(i16 %a) nounwind {
; CHECK-LABEL: cmp_sle_int_max:
; CHECK:       ; %bb.0:
; CHECK-NEXT:    mov #1, r12
; CHECK-NEXT:    ret
  %t = icmp sle i16 %a, 32767
  %r = zext i1 %t to i16
  ret i16 %r
}

define i16 @cmp_sgt_int_max(i16 %a) nounwind {
; CHECK-LABEL: cmp_sgt_int_max:
; CHECK:       ; %bb.0:
; CHECK-NEXT:    clr r12
; CHECK-NEXT:    ret
  %t = icmp sgt i16 %a, 32767
  %r = zext i1 %t to i16
  ret i16 %r
}

define i16 @cmp_sle_int_min(i16 %a) nounwind {
; CHECK-LABEL: cmp_sle_int_min:
; CHECK:       ; %bb.0:
; CHECK-NEXT:    cmp #-32768, r12
; CHECK-NEXT:    mov r2, r12
; CHECK-NEXT:    rra r12
; CHECK-NEXT:    and #1, r12
; CHECK-NEXT:    ret
  %t = icmp sle i16 %a, -32768
  %r = zext i1 %t to i16
  ret i16 %r
}

define i16 @cmp_sgt_int_min(i16 %a) nounwind {
; CHECK-LABEL: cmp_sgt_int_min:
; CHECK:       ; %bb.0:
; CHECK-NEXT:    cmp #-32768, r12
; CHECK-NEXT:    mov r2, r13
; CHECK-NEXT:    rra r13
; CHECK-NEXT:    mov #1, r12
; CHECK-NEXT:    bic r13, r12
; CHECK-NEXT:    ret
  %t = icmp sgt i16 %a, -32768
  %r = zext i1 %t to i16
  ret i16 %r
}

define i16 @cmp_sgt_neg_one(i16 %a) nounwind {
; CHECK-LABEL: cmp_sgt_neg_one:
; CHECK:       ; %bb.0:
; CHECK-NEXT:    mov r12, r13
; CHECK-NEXT:    mov #1, r12
; CHECK-NEXT:    tst r13
; CHECK-NEXT:    jge .LBB10_2
; CHECK-NEXT:  ; %bb.1:
; CHECK-NEXT:    clr r12
; CHECK-NEXT:  .LBB10_2:
; CHECK-NEXT:    ret
  %t = icmp sgt i16 %a, -1
  %r = zext i1 %t to i16
  ret i16 %r
}

; The br_cc path goes through the same EmitCMP helper.
define i16 @br_ule_high_bit(i16 %a) nounwind {
; CHECK-LABEL: br_ule_high_bit:
; CHECK:       ; %bb.0:
; CHECK-NEXT:    cmp #-32767, r12
; CHECK-NEXT:    jhs .LBB11_2
; CHECK-NEXT:  ; %bb.1: ; %yes
; CHECK-NEXT:    mov #1, r12
; CHECK-NEXT:    ret
; CHECK-NEXT:  .LBB11_2: ; %no
; CHECK-NEXT:    clr r12
; CHECK-NEXT:    ret
  %t = icmp ule i16 %a, 32768
  br i1 %t, label %yes, label %no
yes:
  ret i16 1
no:
  ret i16 0
}

define i16 @br_sle_neg_high_bit(i16 %a) nounwind {
; CHECK-LABEL: br_sle_neg_high_bit:
; CHECK:       ; %bb.0:
; CHECK-NEXT:    cmp #-32766, r12
; CHECK-NEXT:    jge .LBB12_2
; CHECK-NEXT:  ; %bb.1: ; %yes
; CHECK-NEXT:    mov #1, r12
; CHECK-NEXT:    ret
; CHECK-NEXT:  .LBB12_2: ; %no
; CHECK-NEXT:    clr r12
; CHECK-NEXT:    ret
  %t = icmp sle i16 %a, -32767
  br i1 %t, label %yes, label %no
yes:
  ret i16 1
no:
  ret i16 0
}