1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -passes=instcombine -S | FileCheck %s
3 target datalayout = "p:16:16"
5 @a = external global [21 x i16], align 1
6 @offsets = external global [4 x i16], align 1
8 ; The "same gep" optimization should work with vector icmp.
9 define <4 x i1> @PR38984_1() {
10 ; CHECK-LABEL: @PR38984_1(
12 ; CHECK-NEXT: ret <4 x i1> <i1 true, i1 true, i1 true, i1 true>
15 %0 = load i16, ptr @offsets, align 1
16 %1 = insertelement <4 x i16> poison, i16 %0, i32 3
17 %2 = getelementptr i32, ptr null, <4 x i16> %1
18 %3 = getelementptr i32, ptr null, <4 x i16> %1
19 %4 = icmp eq <4 x ptr> %2, %3
23 ; The "compare base pointers" optimization should not kick in for vector icmp.
24 define <4 x i1> @PR38984_2() {
25 ; CHECK-LABEL: @PR38984_2(
27 ; CHECK-NEXT: [[TMP0:%.*]] = load i16, ptr @offsets, align 2
28 ; CHECK-NEXT: [[TMP1:%.*]] = insertelement <4 x i16> poison, i16 [[TMP0]], i64 3
29 ; CHECK-NEXT: [[TMP2:%.*]] = getelementptr i16, ptr getelementptr inbounds (i8, ptr @a, i16 42), <4 x i16> [[TMP1]]
30 ; CHECK-NEXT: [[TMP3:%.*]] = getelementptr i16, ptr null, <4 x i16> [[TMP1]]
31 ; CHECK-NEXT: [[TMP4:%.*]] = icmp eq <4 x ptr> [[TMP2]], [[TMP3]]
32 ; CHECK-NEXT: ret <4 x i1> [[TMP4]]
35 %0 = load i16, ptr @offsets
36 %1 = insertelement <4 x i16> poison, i16 %0, i32 3
37 %2 = getelementptr i16, ptr getelementptr ([21 x i16], ptr @a, i64 1, i32 0), <4 x i16> %1
38 %3 = getelementptr i16, ptr null, <4 x i16> %1
39 %4 = icmp eq <4 x ptr> %2, %3