289 lines
9.9 KiB
LLVM
289 lines
9.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3
|
|
; RUN: opt < %s -passes=instcombine -S | FileCheck %s
|
|
|
|
; Tests for foldAndOrOfICmpEqConstantAndICmp
|
|
; https://github.com/llvm/llvm-project/issues/63749
|
|
|
|
; ==============================================================================
|
|
; (icmp eq X, C) | (icmp ult Other, (X - C)) -> (icmp ule Other, (X - (C + 1)))
|
|
; (icmp ne X, C) & (icmp uge Other, (X - C)) -> (icmp ugt Other, (X - (C + 1)))
|
|
; ==============================================================================
|
|
|
|
; ==============================================================================
|
|
; Basic tests
|
|
; ==============================================================================
|
|
define i1 @eq_basic(i8 %x, i8 %y) {
|
|
; CHECK-LABEL: define i1 @eq_basic
|
|
; CHECK-SAME: (i8 [[X:%.*]], i8 [[Y:%.*]]) {
|
|
; CHECK-NEXT: [[TMP1:%.*]] = add i8 [[X]], -1
|
|
; CHECK-NEXT: [[OR:%.*]] = icmp uge i8 [[TMP1]], [[Y]]
|
|
; CHECK-NEXT: ret i1 [[OR]]
|
|
;
|
|
%c1 = icmp eq i8 %x, 0
|
|
%c2 = icmp ugt i8 %x, %y
|
|
%or = or i1 %c1, %c2
|
|
ret i1 %or
|
|
}
|
|
|
|
define i1 @ne_basic_equal_5(i8 %x, i8 %y) {
|
|
; CHECK-LABEL: define i1 @ne_basic_equal_5
|
|
; CHECK-SAME: (i8 [[X:%.*]], i8 [[Y:%.*]]) {
|
|
; CHECK-NEXT: [[TMP1:%.*]] = add i8 [[X]], -6
|
|
; CHECK-NEXT: [[AND:%.*]] = icmp ult i8 [[TMP1]], [[Y]]
|
|
; CHECK-NEXT: ret i1 [[AND]]
|
|
;
|
|
%sub = add i8 %x, -5
|
|
%c1 = icmp ne i8 %x, 5
|
|
%c2 = icmp ule i8 %sub, %y
|
|
%and = and i1 %c1, %c2
|
|
ret i1 %and
|
|
}
|
|
|
|
define i1 @eq_basic_equal_minus_1(i8 %x, i8 %y) {
|
|
; CHECK-LABEL: define i1 @eq_basic_equal_minus_1
|
|
; CHECK-SAME: (i8 [[X:%.*]], i8 [[Y:%.*]]) {
|
|
; CHECK-NEXT: [[OR:%.*]] = icmp uge i8 [[X]], [[Y]]
|
|
; CHECK-NEXT: ret i1 [[OR]]
|
|
;
|
|
%add = add i8 %x, 1
|
|
%c1 = icmp eq i8 %x, -1
|
|
%c2 = icmp ugt i8 %add, %y
|
|
%or = or i1 %c1, %c2
|
|
ret i1 %or
|
|
}
|
|
|
|
define i1 @ne_basic_equal_minus_7(i8 %x, i8 %y) {
|
|
; CHECK-LABEL: define i1 @ne_basic_equal_minus_7
|
|
; CHECK-SAME: (i8 [[X:%.*]], i8 [[Y:%.*]]) {
|
|
; CHECK-NEXT: [[TMP1:%.*]] = add i8 [[X]], 6
|
|
; CHECK-NEXT: [[AND:%.*]] = icmp ult i8 [[TMP1]], [[Y]]
|
|
; CHECK-NEXT: ret i1 [[AND]]
|
|
;
|
|
%add = add i8 %x, 7
|
|
%c1 = icmp ne i8 %x, -7
|
|
%c2 = icmp ule i8 %add, %y
|
|
%and = and i1 %c1, %c2
|
|
ret i1 %and
|
|
}
|
|
|
|
define i1 @eq_basic_unequal(i8 %x, i8 %y) {
|
|
; CHECK-LABEL: define i1 @eq_basic_unequal
|
|
; CHECK-SAME: (i8 [[X:%.*]], i8 [[Y:%.*]]) {
|
|
; CHECK-NEXT: [[SUB:%.*]] = add i8 [[X]], -5
|
|
; CHECK-NEXT: [[C1:%.*]] = icmp eq i8 [[X]], 6
|
|
; CHECK-NEXT: [[C2:%.*]] = icmp ugt i8 [[SUB]], [[Y]]
|
|
; CHECK-NEXT: [[OR:%.*]] = or i1 [[C1]], [[C2]]
|
|
; CHECK-NEXT: ret i1 [[OR]]
|
|
;
|
|
%sub = add i8 %x, -5
|
|
%c1 = icmp eq i8 %x, 6
|
|
%c2 = icmp ugt i8 %sub, %y
|
|
%or = or i1 %c1, %c2
|
|
ret i1 %or
|
|
}
|
|
|
|
define i1 @ne_basic_unequal(i8 %x, i8 %y) {
|
|
; CHECK-LABEL: define i1 @ne_basic_unequal
|
|
; CHECK-SAME: (i8 [[X:%.*]], i8 [[Y:%.*]]) {
|
|
; CHECK-NEXT: [[ADD:%.*]] = add i8 [[X]], 7
|
|
; CHECK-NEXT: [[C1:%.*]] = icmp ne i8 [[X]], -4
|
|
; CHECK-NEXT: [[C2:%.*]] = icmp ule i8 [[ADD]], [[Y]]
|
|
; CHECK-NEXT: [[AND:%.*]] = and i1 [[C1]], [[C2]]
|
|
; CHECK-NEXT: ret i1 [[AND]]
|
|
;
|
|
%add = add i8 %x, 7
|
|
%c1 = icmp ne i8 %x, -4
|
|
%c2 = icmp ule i8 %add, %y
|
|
%and = and i1 %c1, %c2
|
|
ret i1 %and
|
|
}
|
|
|
|
; ==============================================================================
|
|
; Tests with multiple uses
|
|
; ==============================================================================
|
|
define i1 @eq_multi_c1(i8 %x, i8 %y) {
|
|
; CHECK-LABEL: define i1 @eq_multi_c1
|
|
; CHECK-SAME: (i8 [[X:%.*]], i8 [[Y:%.*]]) {
|
|
; CHECK-NEXT: [[C1:%.*]] = icmp eq i8 [[X]], 0
|
|
; CHECK-NEXT: [[TMP1:%.*]] = add i8 [[X]], -1
|
|
; CHECK-NEXT: [[OR:%.*]] = icmp uge i8 [[TMP1]], [[Y]]
|
|
; CHECK-NEXT: call void @use(i1 [[C1]])
|
|
; CHECK-NEXT: ret i1 [[OR]]
|
|
;
|
|
%c1 = icmp eq i8 %x, 0
|
|
%c2 = icmp ugt i8 %x, %y
|
|
%or = or i1 %c1, %c2
|
|
call void @use(i1 %c1)
|
|
ret i1 %or
|
|
}
|
|
|
|
define i1 @ne_multi_c2(i8 %x, i8 %y) {
|
|
; CHECK-LABEL: define i1 @ne_multi_c2
|
|
; CHECK-SAME: (i8 [[X:%.*]], i8 [[Y:%.*]]) {
|
|
; CHECK-NEXT: [[C2:%.*]] = icmp ule i8 [[X]], [[Y]]
|
|
; CHECK-NEXT: [[TMP1:%.*]] = add i8 [[X]], -1
|
|
; CHECK-NEXT: [[AND:%.*]] = icmp ult i8 [[TMP1]], [[Y]]
|
|
; CHECK-NEXT: call void @use(i1 [[C2]])
|
|
; CHECK-NEXT: ret i1 [[AND]]
|
|
;
|
|
%c1 = icmp ne i8 %x, 0
|
|
%c2 = icmp ule i8 %x, %y
|
|
%and = and i1 %c1, %c2
|
|
call void @use(i1 %c2)
|
|
ret i1 %and
|
|
}
|
|
|
|
; ==============================================================================
|
|
; Tests with vector types
|
|
; ==============================================================================
|
|
define <2 x i1> @eq_vector(<2 x i8> %x, <2 x i8> %y) {
|
|
; CHECK-LABEL: define <2 x i1> @eq_vector
|
|
; CHECK-SAME: (<2 x i8> [[X:%.*]], <2 x i8> [[Y:%.*]]) {
|
|
; CHECK-NEXT: [[TMP1:%.*]] = add <2 x i8> [[X]], <i8 -1, i8 -1>
|
|
; CHECK-NEXT: [[OR:%.*]] = icmp uge <2 x i8> [[TMP1]], [[Y]]
|
|
; CHECK-NEXT: ret <2 x i1> [[OR]]
|
|
;
|
|
%c1 = icmp eq <2 x i8> %x, <i8 0, i8 0>
|
|
%c2 = icmp ugt <2 x i8> %x, %y
|
|
%or = or <2 x i1> %c1, %c2
|
|
ret <2 x i1> %or
|
|
}
|
|
|
|
define <2 x i1> @ne_vector_equal_5(<2 x i8> %x, <2 x i8> %y) {
|
|
; CHECK-LABEL: define <2 x i1> @ne_vector_equal_5
|
|
; CHECK-SAME: (<2 x i8> [[X:%.*]], <2 x i8> [[Y:%.*]]) {
|
|
; CHECK-NEXT: [[TMP1:%.*]] = add <2 x i8> [[X]], <i8 -6, i8 -6>
|
|
; CHECK-NEXT: [[AND:%.*]] = icmp ult <2 x i8> [[TMP1]], [[Y]]
|
|
; CHECK-NEXT: ret <2 x i1> [[AND]]
|
|
;
|
|
%sub = add <2 x i8> %x, <i8 -5, i8 -5>
|
|
%c1 = icmp ne <2 x i8> %x, <i8 5, i8 5>
|
|
%c2 = icmp ule <2 x i8> %sub, %y
|
|
%and = and <2 x i1> %c1, %c2
|
|
ret <2 x i1> %and
|
|
}
|
|
|
|
define <2 x i1> @eq_vector_equal_minus_1(<2 x i8> %x, <2 x i8> %y) {
|
|
; CHECK-LABEL: define <2 x i1> @eq_vector_equal_minus_1
|
|
; CHECK-SAME: (<2 x i8> [[X:%.*]], <2 x i8> [[Y:%.*]]) {
|
|
; CHECK-NEXT: [[OR:%.*]] = icmp uge <2 x i8> [[X]], [[Y]]
|
|
; CHECK-NEXT: ret <2 x i1> [[OR]]
|
|
;
|
|
%add = add <2 x i8> %x, <i8 1, i8 1>
|
|
%c1 = icmp eq <2 x i8> %x, <i8 -1, i8 -1>
|
|
%c2 = icmp ugt <2 x i8> %add, %y
|
|
%or = or <2 x i1> %c1, %c2
|
|
ret <2 x i1> %or
|
|
}
|
|
|
|
define <2 x i1> @ne_vector_equal_minus_7(<2 x i8> %x, <2 x i8> %y) {
|
|
; CHECK-LABEL: define <2 x i1> @ne_vector_equal_minus_7
|
|
; CHECK-SAME: (<2 x i8> [[X:%.*]], <2 x i8> [[Y:%.*]]) {
|
|
; CHECK-NEXT: [[TMP1:%.*]] = add <2 x i8> [[X]], <i8 6, i8 6>
|
|
; CHECK-NEXT: [[AND:%.*]] = icmp ult <2 x i8> [[TMP1]], [[Y]]
|
|
; CHECK-NEXT: ret <2 x i1> [[AND]]
|
|
;
|
|
%add = add <2 x i8> %x, <i8 7, i8 7>
|
|
%c1 = icmp ne <2 x i8> %x, <i8 -7, i8 -7>
|
|
%c2 = icmp ule <2 x i8> %add, %y
|
|
%and = and <2 x i1> %c1, %c2
|
|
ret <2 x i1> %and
|
|
}
|
|
|
|
define <2 x i1> @eq_vector_unequal1(<2 x i8> %x, <2 x i8> %y) {
|
|
; CHECK-LABEL: define <2 x i1> @eq_vector_unequal1
|
|
; CHECK-SAME: (<2 x i8> [[X:%.*]], <2 x i8> [[Y:%.*]]) {
|
|
; CHECK-NEXT: [[SUB:%.*]] = add <2 x i8> [[X]], <i8 -5, i8 -5>
|
|
; CHECK-NEXT: [[C1:%.*]] = icmp eq <2 x i8> [[X]], <i8 2, i8 2>
|
|
; CHECK-NEXT: [[C2:%.*]] = icmp ugt <2 x i8> [[SUB]], [[Y]]
|
|
; CHECK-NEXT: [[OR:%.*]] = or <2 x i1> [[C1]], [[C2]]
|
|
; CHECK-NEXT: ret <2 x i1> [[OR]]
|
|
;
|
|
%sub = add <2 x i8> %x, <i8 -5, i8 -5>
|
|
%c1 = icmp eq <2 x i8> %x, <i8 2, i8 2>
|
|
%c2 = icmp ugt <2 x i8> %sub, %y
|
|
%or = or <2 x i1> %c1, %c2
|
|
ret <2 x i1> %or
|
|
}
|
|
|
|
define <2 x i1> @ne_vector_unequal2(<2 x i8> %x, <2 x i8> %y) {
|
|
; CHECK-LABEL: define <2 x i1> @ne_vector_unequal2
|
|
; CHECK-SAME: (<2 x i8> [[X:%.*]], <2 x i8> [[Y:%.*]]) {
|
|
; CHECK-NEXT: [[ADD:%.*]] = add <2 x i8> [[X]], <i8 7, i8 7>
|
|
; CHECK-NEXT: [[C1:%.*]] = icmp ne <2 x i8> [[X]], <i8 -3, i8 -3>
|
|
; CHECK-NEXT: [[C2:%.*]] = icmp ule <2 x i8> [[ADD]], [[Y]]
|
|
; CHECK-NEXT: [[AND:%.*]] = and <2 x i1> [[C1]], [[C2]]
|
|
; CHECK-NEXT: ret <2 x i1> [[AND]]
|
|
;
|
|
%add = add <2 x i8> %x, <i8 7, i8 7>
|
|
%c1 = icmp ne <2 x i8> %x, <i8 -3, i8 -3>
|
|
%c2 = icmp ule <2 x i8> %add, %y
|
|
%and = and <2 x i1> %c1, %c2
|
|
ret <2 x i1> %and
|
|
}
|
|
|
|
; ==============================================================================
|
|
; Tests with undef
|
|
; ==============================================================================
|
|
define <2 x i1> @eq_vector_undef_icmp(<2 x i8> %x, <2 x i8> %y) {
|
|
; CHECK-LABEL: define <2 x i1> @eq_vector_undef_icmp
|
|
; CHECK-SAME: (<2 x i8> [[X:%.*]], <2 x i8> [[Y:%.*]]) {
|
|
; CHECK-NEXT: [[TMP1:%.*]] = add <2 x i8> [[X]], <i8 -6, i8 -6>
|
|
; CHECK-NEXT: [[OR:%.*]] = icmp uge <2 x i8> [[TMP1]], [[Y]]
|
|
; CHECK-NEXT: ret <2 x i1> [[OR]]
|
|
;
|
|
%sub = add <2 x i8> %x, <i8 -5, i8 -5>
|
|
%c1 = icmp eq <2 x i8> %x, <i8 5, i8 undef>
|
|
%c2 = icmp ugt <2 x i8> %sub, %y
|
|
%or = or <2 x i1> %c1, %c2
|
|
ret <2 x i1> %or
|
|
}
|
|
|
|
define <2 x i1> @eq_vector_undef_add(<2 x i8> %x, <2 x i8> %y) {
|
|
; CHECK-LABEL: define <2 x i1> @eq_vector_undef_add
|
|
; CHECK-SAME: (<2 x i8> [[X:%.*]], <2 x i8> [[Y:%.*]]) {
|
|
; CHECK-NEXT: [[TMP1:%.*]] = add <2 x i8> [[X]], <i8 -6, i8 -6>
|
|
; CHECK-NEXT: [[OR:%.*]] = icmp uge <2 x i8> [[TMP1]], [[Y]]
|
|
; CHECK-NEXT: ret <2 x i1> [[OR]]
|
|
;
|
|
%sub = add <2 x i8> %x, <i8 -5, i8 undef>
|
|
%c1 = icmp eq <2 x i8> %x, <i8 5, i8 5>
|
|
%c2 = icmp ugt <2 x i8> %sub, %y
|
|
%or = or <2 x i1> %c1, %c2
|
|
ret <2 x i1> %or
|
|
}
|
|
|
|
; ==============================================================================
|
|
; Tests with values commuted
|
|
; ==============================================================================
|
|
define i1 @eq_commuted(i8 %x, i8 %py) {
|
|
; CHECK-LABEL: define i1 @eq_commuted
|
|
; CHECK-SAME: (i8 [[X:%.*]], i8 [[PY:%.*]]) {
|
|
; CHECK-NEXT: [[Y:%.*]] = sdiv i8 43, [[PY]]
|
|
; CHECK-NEXT: [[TMP1:%.*]] = add i8 [[X]], -1
|
|
; CHECK-NEXT: [[OR:%.*]] = icmp uge i8 [[TMP1]], [[Y]]
|
|
; CHECK-NEXT: ret i1 [[OR]]
|
|
;
|
|
%y = sdiv i8 43, %py ; thwart complexity-based canonicalization
|
|
%c1 = icmp eq i8 %x, 0
|
|
%c2 = icmp ult i8 %y, %x
|
|
%or = or i1 %c1, %c2
|
|
ret i1 %or
|
|
}
|
|
|
|
define i1 @ne_commuted_equal_minus_1(i8 %x, i8 %py) {
|
|
; CHECK-LABEL: define i1 @ne_commuted_equal_minus_1
|
|
; CHECK-SAME: (i8 [[X:%.*]], i8 [[PY:%.*]]) {
|
|
; CHECK-NEXT: [[Y:%.*]] = sdiv i8 42, [[PY]]
|
|
; CHECK-NEXT: [[AND:%.*]] = icmp ugt i8 [[Y]], [[X]]
|
|
; CHECK-NEXT: ret i1 [[AND]]
|
|
;
|
|
%y = sdiv i8 42, %py ; thwart complexity-based canonicalization
|
|
%add = add i8 %x, 1
|
|
%c1 = icmp ne i8 %x, -1
|
|
%c2 = icmp uge i8 %y, %add
|
|
%and = and i1 %c1, %c2
|
|
ret i1 %and
|
|
}
|
|
|
|
declare void @use(i1)
|