1; RUN: llc -x86-discriminate-memops < %s | FileCheck %s 2; RUN: llc -x86-discriminate-memops -x86-bypass-prefetch-instructions=0 < %s | FileCheck %s -check-prefix=NOBYPASS 3; 4; original source, compiled with -O3 -gmlt -fdebug-info-for-profiling: 5; int sum(int* arr, int pos1, int pos2) { 6; return arr[pos1] + arr[pos2]; 7; } 8; 9; ModuleID = 'test.cc' 10source_filename = "test.cc" 11target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 12target triple = "x86_64-unknown-linux-gnu" 13 14declare void @llvm.prefetch(ptr, i32, i32, i32) 15; Function Attrs: norecurse nounwind readonly uwtable 16define i32 @sum(ptr %arr, i32 %pos1, i32 %pos2) !dbg !7 { 17entry: 18 %idxprom = sext i32 %pos1 to i64, !dbg !9 19 %arrayidx = getelementptr inbounds i32, ptr %arr, i64 %idxprom, !dbg !9 20 %0 = load i32, ptr %arrayidx, align 4, !dbg !9, !tbaa !10 21 %idxprom1 = sext i32 %pos2 to i64, !dbg !14 22 %arrayidx2 = getelementptr inbounds i32, ptr %arr, i64 %idxprom1, !dbg !14 23 call void @llvm.prefetch(ptr %arrayidx2, i32 0, i32 3, i32 1) 24 %1 = load i32, ptr %arrayidx2, align 4, !dbg !14, !tbaa !10 25 %add = add nsw i32 %1, %0, !dbg !15 26 ret i32 %add, !dbg !16 27} 28 29attributes #0 = { "target-cpu"="x86-64" } 30 31!llvm.dbg.cu = !{!0} 32!llvm.module.flags = !{!3, !4, !5} 33!llvm.ident = !{!6} 34 35!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !2, debugInfoForProfiling: true) 36!1 = !DIFile(filename: "test.cc", directory: "/tmp") 37!2 = !{} 38!3 = !{i32 2, !"Dwarf Version", i32 4} 39!4 = !{i32 2, !"Debug Info Version", i32 3} 40!5 = !{i32 1, !"wchar_size", i32 4} 41!6 = !{!"clang version 7.0.0 (trunk 322155) (llvm/trunk 322159)"} 42!7 = distinct !DISubprogram(name: "sum", linkageName: "sum", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0) 43!8 = !DISubroutineType(types: !2) 44!9 = !DILocation(line: 2, column: 10, scope: !7) 45!10 = !{!11, !11, i64 0} 46!11 = !{!"int", !12, i64 0} 47!12 = !{!"omnipotent char", !13, i64 0} 48!13 = !{!"Simple C++ TBAA"} 49!14 = !DILocation(line: 2, column: 22, scope: !7) 50!15 = !DILocation(line: 2, column: 20, scope: !7) 51!16 = !DILocation(line: 2, column: 3, scope: !7) 52 53;CHECK-LABEL: sum: 54;CHECK: # %bb.0: 55;CHECK: prefetcht0 (%rdi,%rax,4) 56;CHECK-NEXT: movl (%rdi,%rax,4), %eax 57;CHECK-NEXT: .loc 1 2 20 discriminator 2 # test.cc:2:20 58;CHECK-NEXT: addl (%rdi,%rcx,4), %eax 59;CHECK-NEXT: .loc 1 2 3 # test.cc:2:3 60 61;NOBYPASS-LABEL: sum: 62;NOBYPASS: # %bb.0: 63;NOBYPASS: prefetcht0 (%rdi,%rax,4) 64;NOBYPASS-NEXT: .loc 1 2 22 65;NOBYPASS-NEXT: movl (%rdi,%rax,4), %eax 66;NOBYPASS-NEXT: .loc 1 2 20 {{.*}} discriminator 2 # test.cc:2:20 67;NOBYPASS-NEXT: addl (%rdi,%rcx,4), %eax 68;NOBYPASS-NEXT: .loc 1 2 3 # test.cc:2:3 69