1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
|
; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py UTC_ARGS: --version 5
; RUN: opt -S -disable-output "-passes=print<scalar-evolution>" < %s 2>&1 | FileCheck %s
define i16 @test() {
; CHECK-LABEL: 'test'
; CHECK-NEXT: Classifying expressions for: @test
; CHECK-NEXT: %xor = xor i32 0, 3
; CHECK-NEXT: --> %xor U: [3,4) S: [3,4)
; CHECK-NEXT: %mul = mul i32 %xor, 329
; CHECK-NEXT: --> (329 * %xor)<nuw><nsw> U: [987,988) S: [987,988)
; CHECK-NEXT: %conv = trunc i32 %mul to i16
; CHECK-NEXT: --> (329 * (trunc i32 %xor to i16))<nuw><nsw> U: [987,988) S: [987,988)
; CHECK-NEXT: %sext = shl i16 %conv, 8
; CHECK-NEXT: --> (18688 * (trunc i32 %xor to i16))<nuw> U: [-9472,-9471) S: [-9472,-9471)
; CHECK-NEXT: %conv1 = ashr i16 %sext, 8
; CHECK-NEXT: --> (sext i8 (73 * (trunc i32 %xor to i8))<nuw> to i16) U: [-37,-36) S: [-37,-36)
; CHECK-NEXT: Determining loop execution counts for: @test
;
entry:
%xor = xor i32 0, 3
%mul = mul i32 %xor, 329
%conv = trunc i32 %mul to i16
%sext = shl i16 %conv, 8
%conv1 = ashr i16 %sext, 8
ret i16 %conv1
}
|
