1 ; RUN: llc -mtriple=x86_64-pc-linux -x86-cmov-converter=true -verify-machineinstrs < %s | FileCheck %s 2 3 ; Test for PR34565, check that DBG instructions are ignored while optimizing 4 ; X86 CMOV instructions. 5 ; In this case, we check that there is no 'cmov' generated. 6 7 ; CHECK-NOT: cmov 8 9 @main.buf = private unnamed_addr constant [10 x i64] [i64 0, i64 1, i64 2, i64 3, i64 4, i64 5, i64 6, i64 7, i64 8, i64 9], align 8 10 11 define i32 @main() #0 !dbg !5 { 12 entry: 13 br label %while.body 14 15 while.body: ; preds = %while.body, %entry 16 %a.010 = phi i32 [ 0, %entry ], [ %add.a.0, %while.body ] 17 %b.09 = phi i32 [ 10, %entry ], [ %b.0.add, %while.body ] 18 %add = add i32 %a.010, %b.09 19 %call = tail call i32 @rand() 20 %conv = sext i32 %call to i64 21 %arrayidx = getelementptr inbounds [10 x i64], [10 x i64]* @main.buf, i32 0, i32 %add 22 %0 = load i64, i64* %arrayidx, align 8 23 %cmp1 = icmp ult i64 %0, %conv 24 %b.0.add = select i1 %cmp1, i32 %b.09, i32 %add 25 %add.a.0 = select i1 %cmp1, i32 %add, i32 %a.010 26 tail call void @llvm.dbg.value(metadata i32 %add.a.0, metadata !10, metadata !DIExpression()), !dbg !13 27 tail call void @llvm.dbg.value(metadata i32 %b.0.add, metadata !12, metadata !DIExpression()), !dbg !14 28 tail call void @llvm.dbg.value(metadata i32 %add.a.0, metadata !10, metadata !DIExpression()), !dbg !13 29 tail call void @llvm.dbg.value(metadata i32 %b.0.add, metadata !12, metadata !DIExpression()), !dbg !14 30 %cmp = icmp ult i32 %add.a.0, %b.0.add 31 br i1 %cmp, label %while.body, label %while.end 32 33 while.end: ; preds = %while.body 34 ret i32 0 35 } 36 37 declare i32 @rand() 38 39 declare void @llvm.dbg.value(metadata, metadata, metadata) 40 41 attributes #0 = { "target-cpu"="x86-64" } 42 43 !llvm.dbg.cu = !{!0} 44 !llvm.module.flags = !{!3, !4} 45 46 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0 (trunk)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) 47 !1 = !DIFile(filename: "PR34565.c", directory: "\5C") 48 !2 = !{} 49 !3 = !{i32 2, !"Dwarf Version", i32 4} 50 !4 = !{i32 2, !"Debug Info Version", i32 3} 51 !5 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 3, type: !6, isLocal: false, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !9) 52 !6 = !DISubroutineType(types: !7) 53 !7 = !{!8} 54 !8 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 55 !9 = !{!10, !12} 56 !10 = !DILocalVariable(name: "a", scope: !5, file: !1, line: 6, type: !11) 57 !11 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned) 58 !12 = !DILocalVariable(name: "b", scope: !5, file: !1, line: 7, type: !11) 59 !13 = !DILocation(line: 6, column: 16, scope: !5) 60 !14 = !DILocation(line: 7, column: 16, scope: !5) 61
