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|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt < %s -passes=instcombine -S | FileCheck %s
declare void @use(i8 %value)
define i1 @ucmp_eq_0(i32 %x, i32 %y) {
; CHECK-LABEL: define i1 @ucmp_eq_0(
; CHECK-SAME: i32 [[X:%.*]], i32 [[Y:%.*]]) {
; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i32 [[X]], [[Y]]
; CHECK-NEXT: ret i1 [[TMP2]]
;
%1 = call i8 @llvm.ucmp(i32 %x, i32 %y)
%2 = icmp eq i8 %1, 0
ret i1 %2
}
define i1 @ucmp_ne_0(i32 %x, i32 %y) {
; CHECK-LABEL: define i1 @ucmp_ne_0(
; CHECK-SAME: i32 [[X:%.*]], i32 [[Y:%.*]]) {
; CHECK-NEXT: [[TMP2:%.*]] = icmp ne i32 [[X]], [[Y]]
; CHECK-NEXT: ret i1 [[TMP2]]
;
%1 = call i8 @llvm.ucmp(i32 %x, i32 %y)
%2 = icmp ne i8 %1, 0
ret i1 %2
}
define i1 @ucmp_eq_1(i32 %x, i32 %y) {
; CHECK-LABEL: define i1 @ucmp_eq_1(
; CHECK-SAME: i32 [[X:%.*]], i32 [[Y:%.*]]) {
; CHECK-NEXT: [[TMP2:%.*]] = icmp ugt i32 [[X]], [[Y]]
; CHECK-NEXT: ret i1 [[TMP2]]
;
%1 = call i8 @llvm.ucmp(i32 %x, i32 %y)
%2 = icmp eq i8 %1, 1
ret i1 %2
}
define i1 @ucmp_ne_1(i32 %x, i32 %y) {
; CHECK-LABEL: define i1 @ucmp_ne_1(
; CHECK-SAME: i32 [[X:%.*]], i32 [[Y:%.*]]) {
; CHECK-NEXT: [[TMP2:%.*]] = icmp ule i32 [[X]], [[Y]]
; CHECK-NEXT: ret i1 [[TMP2]]
;
%1 = call i8 @llvm.ucmp(i32 %x, i32 %y)
%2 = icmp ne i8 %1, 1
ret i1 %2
}
define i1 @ucmp_eq_negative_1(i32 %x, i32 %y) {
; CHECK-LABEL: define i1 @ucmp_eq_negative_1(
; CHECK-SAME: i32 [[X:%.*]], i32 [[Y:%.*]]) {
; CHECK-NEXT: [[TMP2:%.*]] = icmp ult i32 [[X]], [[Y]]
; CHECK-NEXT: ret i1 [[TMP2]]
;
%1 = call i8 @llvm.ucmp(i32 %x, i32 %y)
%2 = icmp eq i8 %1, -1
ret i1 %2
}
define i1 @ucmp_ne_negative_1(i32 %x, i32 %y) {
; CHECK-LABEL: define i1 @ucmp_ne_negative_1(
; CHECK-SAME: i32 [[X:%.*]], i32 [[Y:%.*]]) {
; CHECK-NEXT: [[TMP2:%.*]] = icmp uge i32 [[X]], [[Y]]
; CHECK-NEXT: ret i1 [[TMP2]]
;
%1 = call i8 @llvm.ucmp(i32 %x, i32 %y)
%2 = icmp ne i8 %1, -1
ret i1 %2
}
define i1 @ucmp_sgt_0(i32 %x, i32 %y) {
; CHECK-LABEL: define i1 @ucmp_sgt_0(
; CHECK-SAME: i32 [[X:%.*]], i32 [[Y:%.*]]) {
; CHECK-NEXT: [[TMP2:%.*]] = icmp ugt i32 [[X]], [[Y]]
; CHECK-NEXT: ret i1 [[TMP2]]
;
%1 = call i8 @llvm.ucmp(i32 %x, i32 %y)
%2 = icmp sgt i8 %1, 0
ret i1 %2
}
define i1 @ucmp_sgt_neg_1(i32 %x, i32 %y) {
; CHECK-LABEL: define i1 @ucmp_sgt_neg_1(
; CHECK-SAME: i32 [[X:%.*]], i32 [[Y:%.*]]) {
; CHECK-NEXT: [[TMP2:%.*]] = icmp uge i32 [[X]], [[Y]]
; CHECK-NEXT: ret i1 [[TMP2]]
;
%1 = call i8 @llvm.ucmp(i32 %x, i32 %y)
%2 = icmp sgt i8 %1, -1
ret i1 %2
}
define i1 @ucmp_sge_0(i32 %x, i32 %y) {
; CHECK-LABEL: define i1 @ucmp_sge_0(
; CHECK-SAME: i32 [[X:%.*]], i32 [[Y:%.*]]) {
; CHECK-NEXT: [[TMP2:%.*]] = icmp uge i32 [[X]], [[Y]]
; CHECK-NEXT: ret i1 [[TMP2]]
;
%1 = call i8 @llvm.ucmp(i32 %x, i32 %y)
%2 = icmp sge i8 %1, 0
ret i1 %2
}
define i1 @ucmp_sge_1(i32 %x, i32 %y) {
; CHECK-LABEL: define i1 @ucmp_sge_1(
; CHECK-SAME: i32 [[X:%.*]], i32 [[Y:%.*]]) {
; CHECK-NEXT: [[TMP2:%.*]] = icmp ugt i32 [[X]], [[Y]]
; CHECK-NEXT: ret i1 [[TMP2]]
;
%1 = call i8 @llvm.ucmp(i32 %x, i32 %y)
%2 = icmp sge i8 %1, 1
ret i1 %2
}
define i1 @ucmp_slt_0(i32 %x, i32 %y) {
; CHECK-LABEL: define i1 @ucmp_slt_0(
; CHECK-SAME: i32 [[X:%.*]], i32 [[Y:%.*]]) {
; CHECK-NEXT: [[TMP2:%.*]] = icmp ult i32 [[X]], [[Y]]
; CHECK-NEXT: ret i1 [[TMP2]]
;
%1 = call i8 @llvm.ucmp(i32 %x, i32 %y)
%2 = icmp slt i8 %1, 0
ret i1 %2
}
define i1 @ucmp_slt_1(i32 %x, i32 %y) {
; CHECK-LABEL: define i1 @ucmp_slt_1(
; CHECK-SAME: i32 [[X:%.*]], i32 [[Y:%.*]]) {
; CHECK-NEXT: [[TMP2:%.*]] = icmp ule i32 [[X]], [[Y]]
; CHECK-NEXT: ret i1 [[TMP2]]
;
%1 = call i8 @llvm.ucmp(i32 %x, i32 %y)
%2 = icmp slt i8 %1, 1
ret i1 %2
}
define i1 @ucmp_sle_0(i32 %x, i32 %y) {
; CHECK-LABEL: define i1 @ucmp_sle_0(
; CHECK-SAME: i32 [[X:%.*]], i32 [[Y:%.*]]) {
; CHECK-NEXT: [[TMP2:%.*]] = icmp ule i32 [[X]], [[Y]]
; CHECK-NEXT: ret i1 [[TMP2]]
;
%1 = call i8 @llvm.ucmp(i32 %x, i32 %y)
%2 = icmp sle i8 %1, 0
ret i1 %2
}
define i1 @ucmp_sle_neg_1(i32 %x, i32 %y) {
; CHECK-LABEL: define i1 @ucmp_sle_neg_1(
; CHECK-SAME: i32 [[X:%.*]], i32 [[Y:%.*]]) {
; CHECK-NEXT: [[TMP2:%.*]] = icmp ult i32 [[X]], [[Y]]
; CHECK-NEXT: ret i1 [[TMP2]]
;
%1 = call i8 @llvm.ucmp(i32 %x, i32 %y)
%2 = icmp sle i8 %1, -1
ret i1 %2
}
; ========== Fold -ucmp(x, y) => ucmp(y, x) ==========
define i8 @ucmp_negated(i32 %x, i32 %y) {
; CHECK-LABEL: define i8 @ucmp_negated(
; CHECK-SAME: i32 [[X:%.*]], i32 [[Y:%.*]]) {
; CHECK-NEXT: [[TMP2:%.*]] = call i8 @llvm.ucmp.i8.i32(i32 [[Y]], i32 [[X]])
; CHECK-NEXT: ret i8 [[TMP2]]
;
%1 = call i8 @llvm.ucmp(i32 %x, i32 %y)
%2 = sub i8 0, %1
ret i8 %2
}
; Negative test: do not fold if the original ucmp result is already used
define i8 @ucmp_negated_multiuse(i32 %x, i32 %y) {
; CHECK-LABEL: define i8 @ucmp_negated_multiuse(
; CHECK-SAME: i32 [[X:%.*]], i32 [[Y:%.*]]) {
; CHECK-NEXT: [[TMP1:%.*]] = call i8 @llvm.ucmp.i8.i32(i32 [[X]], i32 [[Y]])
; CHECK-NEXT: call void @use(i8 [[TMP1]])
; CHECK-NEXT: [[TMP2:%.*]] = sub nsw i8 0, [[TMP1]]
; CHECK-NEXT: ret i8 [[TMP2]]
;
%1 = call i8 @llvm.ucmp(i32 %x, i32 %y)
call void @use(i8 %1)
%2 = sub i8 0, %1
ret i8 %2
}
|
