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TheRock/compiler/amd-llvm/llvm/test/Transforms/InstCombine/sext-and.ll
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

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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)
define i1 @fold_sext_to_and(i8 %x) {
; CHECK-LABEL: define i1 @fold_sext_to_and(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: [[TMP1:%.*]] = and i8 [[X]], -127
; CHECK-NEXT: [[TMP3:%.*]] = icmp eq i8 [[TMP1]], 1
; CHECK-NEXT: ret i1 [[TMP3]]
;
%1 = sext i8 %x to i32
%2 = and i32 %1, -2147483647
%3 = icmp eq i32 %2, 1
ret i1 %3
}
define i1 @fold_sext_to_and1(i8 %x) {
; CHECK-LABEL: define i1 @fold_sext_to_and1(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: [[TMP1:%.*]] = and i8 [[X]], -127
; CHECK-NEXT: [[TMP3:%.*]] = icmp ne i8 [[TMP1]], 1
; CHECK-NEXT: ret i1 [[TMP3]]
;
%1 = sext i8 %x to i32
%2 = and i32 %1, -2147483647
%3 = icmp ne i32 %2, 1
ret i1 %3
}
define i1 @fold_sext_to_and2(i8 %x) {
; CHECK-LABEL: define i1 @fold_sext_to_and2(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: [[TMP1:%.*]] = and i8 [[X]], -126
; CHECK-NEXT: [[TMP3:%.*]] = icmp eq i8 [[TMP1]], 2
; CHECK-NEXT: ret i1 [[TMP3]]
;
%1 = sext i8 %x to i32
%2 = and i32 %1, 1073741826
%3 = icmp eq i32 %2, 2
ret i1 %3
}
define i1 @fold_sext_to_and3(i8 %x) {
; CHECK-LABEL: define i1 @fold_sext_to_and3(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: [[TMP1:%.*]] = and i8 [[X]], -126
; CHECK-NEXT: [[TMP3:%.*]] = icmp ne i8 [[TMP1]], 2
; CHECK-NEXT: ret i1 [[TMP3]]
;
%1 = sext i8 %x to i32
%2 = and i32 %1, 1073741826
%3 = icmp ne i32 %2, 2
ret i1 %3
}
define i1 @fold_sext_to_and_multi_use(i8 %x) {
; CHECK-LABEL: define i1 @fold_sext_to_and_multi_use(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: [[TMP1:%.*]] = sext i8 [[X]] to i32
; CHECK-NEXT: call void @use(i32 [[TMP1]])
; CHECK-NEXT: [[TMP2:%.*]] = and i8 [[X]], -127
; CHECK-NEXT: [[TMP3:%.*]] = icmp eq i8 [[TMP2]], 1
; CHECK-NEXT: ret i1 [[TMP3]]
;
%1 = sext i8 %x to i32
call void @use(i32 %1)
%2 = and i32 %1, -2147483647
%3 = icmp eq i32 %2, 1
ret i1 %3
}
define i1 @fold_sext_to_and_multi_use1(i8 %x) {
; CHECK-LABEL: define i1 @fold_sext_to_and_multi_use1(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: [[TMP1:%.*]] = sext i8 [[X]] to i32
; CHECK-NEXT: call void @use(i32 [[TMP1]])
; CHECK-NEXT: [[TMP2:%.*]] = and i8 [[X]], -127
; CHECK-NEXT: [[TMP3:%.*]] = icmp ne i8 [[TMP2]], 1
; CHECK-NEXT: ret i1 [[TMP3]]
;
%1 = sext i8 %x to i32
call void @use(i32 %1)
%2 = and i32 %1, -2147483647
%3 = icmp ne i32 %2, 1
ret i1 %3
}
define i1 @fold_sext_to_and_multi_use2(i8 %x) {
; CHECK-LABEL: define i1 @fold_sext_to_and_multi_use2(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: [[TMP1:%.*]] = sext i8 [[X]] to i32
; CHECK-NEXT: call void @use(i32 [[TMP1]])
; CHECK-NEXT: [[TMP2:%.*]] = and i8 [[X]], -126
; CHECK-NEXT: [[TMP3:%.*]] = icmp eq i8 [[TMP2]], 2
; CHECK-NEXT: ret i1 [[TMP3]]
;
%1 = sext i8 %x to i32
call void @use(i32 %1)
%2 = and i32 %1, 1073741826
%3 = icmp eq i32 %2, 2
ret i1 %3
}
define i1 @fold_sext_to_and_multi_use3(i8 %x) {
; CHECK-LABEL: define i1 @fold_sext_to_and_multi_use3(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: [[TMP1:%.*]] = sext i8 [[X]] to i32
; CHECK-NEXT: call void @use(i32 [[TMP1]])
; CHECK-NEXT: [[TMP2:%.*]] = and i8 [[X]], -126
; CHECK-NEXT: [[TMP3:%.*]] = icmp ne i8 [[TMP2]], 2
; CHECK-NEXT: ret i1 [[TMP3]]
;
%1 = sext i8 %x to i32
call void @use(i32 %1)
%2 = and i32 %1, 1073741826
%3 = icmp ne i32 %2, 2
ret i1 %3
}
; Negative tests
define i1 @fold_sext_to_and_wrong(i8 %x) {
; CHECK-LABEL: define i1 @fold_sext_to_and_wrong(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: ret i1 false
;
%1 = sext i8 %x to i32
%2 = and i32 %1, -2147483647
%3 = icmp eq i32 %2, -1
ret i1 %3
}
define i1 @fold_sext_to_and_wrong2(i8 %x) {
; CHECK-LABEL: define i1 @fold_sext_to_and_wrong2(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: ret i1 false
;
%1 = sext i8 %x to i32
%2 = and i32 %1, -2147483647
%3 = icmp eq i32 %2, 128
ret i1 %3
}
define i1 @fold_sext_to_and_wrong3(i8 %x) {
; CHECK-LABEL: define i1 @fold_sext_to_and_wrong3(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: ret i1 false
;
%1 = sext i8 %x to i32
%2 = and i32 %1, 128
%3 = icmp eq i32 %2, -2147483648
ret i1 %3
}
define i1 @fold_sext_to_and_wrong4(i8 %x) {
; CHECK-LABEL: define i1 @fold_sext_to_and_wrong4(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: ret i1 false
;
%1 = sext i8 %x to i32
%2 = and i32 %1, 128
%3 = icmp eq i32 %2, 1
ret i1 %3
}
define i1 @fold_sext_to_and_wrong5(i8 %x) {
; CHECK-LABEL: define i1 @fold_sext_to_and_wrong5(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: ret i1 false
;
%1 = sext i8 %x to i32
%2 = and i32 %1, -256
%3 = icmp eq i32 %2, 1
ret i1 %3
}
define i1 @fold_sext_to_and_wrong6(i8 %x) {
; CHECK-LABEL: define i1 @fold_sext_to_and_wrong6(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: ret i1 true
;
%1 = sext i8 %x to i32
%2 = and i32 %1, -2147483647
%3 = icmp ne i32 %2, -1
ret i1 %3
}
define i1 @fold_sext_to_and_wrong7(i8 %x) {
; CHECK-LABEL: define i1 @fold_sext_to_and_wrong7(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: ret i1 true
;
%1 = sext i8 %x to i32
%2 = and i32 %1, -2147483647
%3 = icmp ne i32 %2, 128
ret i1 %3
}
define i1 @fold_sext_to_and_wrong8(i8 %x) {
; CHECK-LABEL: define i1 @fold_sext_to_and_wrong8(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: ret i1 true
;
%1 = sext i8 %x to i32
%2 = and i32 %1, 128
%3 = icmp ne i32 %2, -2147483648
ret i1 %3
}
define i1 @fold_sext_to_and_wrong9(i8 %x) {
; CHECK-LABEL: define i1 @fold_sext_to_and_wrong9(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: ret i1 true
;
%1 = sext i8 %x to i32
%2 = and i32 %1, 128
%3 = icmp ne i32 %2, 1
ret i1 %3
}
define i1 @fold_sext_to_and_wrong10(i8 %x) {
; CHECK-LABEL: define i1 @fold_sext_to_and_wrong10(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: ret i1 true
;
%1 = sext i8 %x to i32
%2 = and i32 %1, -256
%3 = icmp ne i32 %2, 1
ret i1 %3
}
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