llvm/test/CodeGen/DirectX/usub_sat.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -S  -dxil-intrinsic-expansion -mtriple=dxil-pc-shadermodel6.3-library %s | FileCheck %s

; Make sure dxil operation function calls for pow are generated.

define noundef i16 @usub_sat_i16(i16 noundef %a, i16 noundef %b) {
; CHECK-LABEL: define noundef i16 @usub_sat_i16(
; CHECK-SAME: i16 noundef [[A:%.*]], i16 noundef [[B:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*:]]
; CHECK-NEXT:    [[USUB_CMP:%.*]] = icmp ult i16 [[A]], [[B]]
; CHECK-NEXT:    [[USUB_SUB:%.*]] = sub i16 [[A]], [[B]]
; CHECK-NEXT:    [[ELT_USUB_SAT:%.*]] = select i1 [[USUB_CMP]], i16 0, i16 [[USUB_SUB]]
; CHECK-NEXT:    ret i16 [[ELT_USUB_SAT]]
;
entry:
  %elt.usub_sat = call i16 @llvm.usub.sat.i16(i16 %a, i16 %b)
  ret i16 %elt.usub_sat
}

define noundef i32 @usub_sat_i32(i32 noundef %a, i32 noundef %b) {
; CHECK-LABEL: define noundef i32 @usub_sat_i32(
; CHECK-SAME: i32 noundef [[A:%.*]], i32 noundef [[B:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*:]]
; CHECK-NEXT:    [[USUB_CMP:%.*]] = icmp ult i32 [[A]], [[B]]
; CHECK-NEXT:    [[USUB_SUB:%.*]] = sub i32 [[A]], [[B]]
; CHECK-NEXT:    [[ELT_USUB_SAT:%.*]] = select i1 [[USUB_CMP]], i32 0, i32 [[USUB_SUB]]
; CHECK-NEXT:    ret i32 [[ELT_USUB_SAT]]
;
entry:
  %elt.usub_sat = call i32 @llvm.usub.sat.i32(i32 %a, i32 %b)
  ret i32 %elt.usub_sat
}

define noundef i64 @usub_sat_i64(i64 noundef %a, i64 noundef %b) {
; CHECK-LABEL: define noundef i64 @usub_sat_i64(
; CHECK-SAME: i64 noundef [[A:%.*]], i64 noundef [[B:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*:]]
; CHECK-NEXT:    [[USUB_CMP:%.*]] = icmp ult i64 [[A]], [[B]]
; CHECK-NEXT:    [[USUB_SUB:%.*]] = sub i64 [[A]], [[B]]
; CHECK-NEXT:    [[ELT_USUB_SAT:%.*]] = select i1 [[USUB_CMP]], i64 0, i64 [[USUB_SUB]]
; CHECK-NEXT:    ret i64 [[ELT_USUB_SAT]]
;
entry:
  %elt.usub_sat = call i64 @llvm.usub.sat.i64(i64 %a, i64 %b)
  ret i64 %elt.usub_sat
}

define noundef <4 x i32> @usub_sat_vec(<4 x i32> noundef %a, <4 x i32> noundef %b) {
; CHECK-LABEL: define noundef <4 x i32> @usub_sat_vec(
; CHECK-SAME: <4 x i32> noundef [[A:%.*]], <4 x i32> noundef [[B:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*:]]
; CHECK-NEXT:    [[USUB_CMP:%.*]] = icmp ult <4 x i32> [[A]], [[B]]
; CHECK-NEXT:    [[USUB_SUB:%.*]] = sub <4 x i32> [[A]], [[B]]
; CHECK-NEXT:    [[ELT_USUB_SAT:%.*]] = select <4 x i1> [[USUB_CMP]], <4 x i32> zeroinitializer, <4 x i32> [[USUB_SUB]]
; CHECK-NEXT:    ret <4 x i32> [[ELT_USUB_SAT]]
;
entry:
  %elt.usub_sat = call <4 x i32> @llvm.usub.sat.v4i32(<4 x i32> %a, <4 x i32> %b)
  ret <4 x i32> %elt.usub_sat
}