42 lines · plain
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt < %s -passes=instcombine -S | FileCheck %s3target datalayout = "p:16:16"4 5@a = external global [21 x i16], align 16@offsets = external global [4 x i16], align 17 8; The "same gep" optimization should work with vector icmp.9define <4 x i1> @PR38984_1() {10; CHECK-LABEL: @PR38984_1(11; CHECK-NEXT: entry:12; CHECK-NEXT: ret <4 x i1> splat (i1 true)13;14entry:15 %0 = load i16, ptr @offsets, align 116 %1 = insertelement <4 x i16> undef, i16 %0, i32 317 %2 = getelementptr i32, ptr null, <4 x i16> %118 %3 = getelementptr i32, ptr null, <4 x i16> %119 %4 = icmp eq <4 x ptr> %2, %320 ret <4 x i1> %421}22 23; The "compare base pointers" optimization should not kick in for vector icmp.24define <4 x i1> @PR38984_2() {25; CHECK-LABEL: @PR38984_2(26; CHECK-NEXT: entry:27; CHECK-NEXT: [[TMP0:%.*]] = load i16, ptr @offsets, align 228; CHECK-NEXT: [[TMP1:%.*]] = insertelement <4 x i16> <i16 undef, i16 undef, i16 undef, i16 poison>, i16 [[TMP0]], i64 329; CHECK-NEXT: [[TMP2:%.*]] = getelementptr i16, ptr getelementptr inbounds nuw (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]]33;34entry:35 %0 = load i16, ptr @offsets36 %1 = insertelement <4 x i16> undef, i16 %0, i32 337 %2 = getelementptr i16, ptr getelementptr ([21 x i16], ptr @a, i64 1, i32 0), <4 x i16> %138 %3 = getelementptr i16, ptr null, <4 x i16> %139 %4 = icmp eq <4 x ptr> %2, %340 ret <4 x i1> %441}42