297 lines
13 KiB
LLVM
297 lines
13 KiB
LLVM
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; RUN: llc < %s -filetype=obj | llvm-readobj - --codeview | FileCheck %s
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;
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; -- lexicablock.cxx begin ----------------------------------------------------
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; int main(int argc, char *argv[]) {
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; int localA = 1;
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;
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; { // S_BLOCK32 not emitted because it has multiple address ranges.
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; int localB = 2;
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;
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; if (__builtin_expect(argc != 1, 0)) { // S_BLOCK32 containing 'localC'
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; int localC = 3;
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; }
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; }
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;
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; { // S_BLOCK32 containing 'localD'
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; int localD = 4;
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; localA = localD;
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; }
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;
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; { // S_BLOCK32 not emitted
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; { // S_BLOCK32 containing 'localE'
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; int localE = 5;
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; localA = localE;
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; }
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; }
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;
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; { // S_BLOCK32 containing 'localF'
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; int localF = 6;
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; localA = localF;
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;
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; { // S_BLOCK32 containing 'localG'
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; int localG = 7;
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; localA = localG;
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; }
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; }
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;
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; if (localA == 7) { // S_BLOCK32 containing 'localH'
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; int localH = 8;
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; localA = localH;
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; }
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;
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; return localA != 8 ? -1 : 0;
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; }
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; -- lexicalblock.cxx end -----------------------------------------------------
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;
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; To regenerate the IR below:
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; $ clang -cc1 -triple i686-pc-windows -emit-llvm -o lexicalblock.tmp -debug-info-kind=limited -gcodeview lexicablock.cxx -O1 -disable-llvm-passes
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; $ opt -lower-expect -S -o lexicalblock.ll < lexicalblock.tmp
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;
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; The commands above split the lexical block containing localB and localC into
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; two parts, thus creating multiple ranges for the containing lexical block
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; without optimizing out the whole thing.
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;
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; CHECK: {{.*}}Proc{{.*}}Sym {
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; CHECK: DisplayName: main
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; CHECK: }
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; CHECK: LocalSym {
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; CHECK: VarName: argc
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; CHECK: }
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; CHECK: LocalSym {
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; CHECK: VarName: argv
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; CHECK: }
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; CHECK: LocalSym {
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; CHECK: VarName: localA
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; CHECK: }
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; CHECK: LocalSym {
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; CHECK: VarName: localB
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; CHECK: }
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; CHECK: BlockSym {
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; CHECK: Kind: S_BLOCK32 {{.*}}
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; CHECK: BlockName:
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; CHECK: }
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; CHECK: ScopeEndSym {
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; CHECK: Kind: S_END {{.*}}
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; CHECK: }
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; CHECK: BlockSym {
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; CHECK: Kind: S_BLOCK32 {{.*}}
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; CHECK: BlockName:
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; CHECK: }
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; CHECK: ScopeEndSym {
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; CHECK: Kind: S_END {{.*}}
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; CHECK: }
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; CHECK: BlockSym {
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; CHECK: Kind: S_BLOCK32 {{.*}}
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; CHECK: BlockName:
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; CHECK: }
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; CHECK: ScopeEndSym {
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; CHECK: }
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; CHECK: BlockSym {
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; CHECK: Kind: S_BLOCK32 {{.*}}
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; CHECK: BlockName:
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; CHECK: }
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; CHECK: ScopeEndSym {
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; CHECK: Kind: S_END {{.*}}
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; CHECK: }
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; CHECK: ProcEnd {
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; CHECK: }
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;
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; ModuleID = 'lexicalblock.cxx'
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source_filename = "lexicalblock.cxx"
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target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
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target triple = "i686-pc-windows-msvc"
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; Function Attrs: norecurse nounwind
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define i32 @main(i32 %argc, i8** %argv) #0 !dbg !8 {
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entry:
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%retval = alloca i32, align 4
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%argv.addr = alloca i8**, align 4
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%argc.addr = alloca i32, align 4
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%localA = alloca i32, align 4
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%localB = alloca i32, align 4
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%localC = alloca i32, align 4
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%localD = alloca i32, align 4
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%localE = alloca i32, align 4
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%localF = alloca i32, align 4
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%localG = alloca i32, align 4
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%localH = alloca i32, align 4
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store i32 0, i32* %retval, align 4
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store i8** %argv, i8*** %argv.addr, align 4, !tbaa !37
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call void @llvm.dbg.declare(metadata i8*** %argv.addr, metadata !17, metadata !DIExpression()), !dbg !41
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store i32 %argc, i32* %argc.addr, align 4, !tbaa !42
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call void @llvm.dbg.declare(metadata i32* %argc.addr, metadata !18, metadata !DIExpression()), !dbg !41
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%0 = bitcast i32* %localA to i8*, !dbg !44
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call void @llvm.lifetime.start.p0i8(i64 4, i8* %0) #4, !dbg !44
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call void @llvm.dbg.declare(metadata i32* %localA, metadata !19, metadata !DIExpression()), !dbg !44
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store i32 1, i32* %localA, align 4, !dbg !44, !tbaa !42
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%1 = bitcast i32* %localB to i8*, !dbg !45
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call void @llvm.lifetime.start.p0i8(i64 4, i8* %1) #4, !dbg !45
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call void @llvm.dbg.declare(metadata i32* %localB, metadata !20, metadata !DIExpression()), !dbg !45
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store i32 2, i32* %localB, align 4, !dbg !45, !tbaa !42
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%2 = load i32, i32* %argc.addr, align 4, !dbg !46, !tbaa !42
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%cmp = icmp ne i32 %2, 1, !dbg !46
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%conv = zext i1 %cmp to i32, !dbg !46
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%tobool = icmp ne i32 %conv, 0, !dbg !46
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br i1 %tobool, label %if.then, label %if.end, !dbg !46, !prof !47
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if.then: ; preds = %entry
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%3 = bitcast i32* %localC to i8*, !dbg !48
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call void @llvm.lifetime.start.p0i8(i64 4, i8* %3) #4, !dbg !48
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call void @llvm.dbg.declare(metadata i32* %localC, metadata !22, metadata !DIExpression()), !dbg !48
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store i32 3, i32* %localC, align 4, !dbg !48, !tbaa !42
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%4 = bitcast i32* %localC to i8*, !dbg !49
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call void @llvm.lifetime.end.p0i8(i64 4, i8* %4) #4, !dbg !49
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br label %if.end, !dbg !49
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if.end: ; preds = %if.then, %entry
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%5 = bitcast i32* %localB to i8*, !dbg !50
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call void @llvm.lifetime.end.p0i8(i64 4, i8* %5) #4, !dbg !50
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%6 = bitcast i32* %localD to i8*, !dbg !51
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call void @llvm.lifetime.start.p0i8(i64 4, i8* %6) #4, !dbg !51
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call void @llvm.dbg.declare(metadata i32* %localD, metadata !25, metadata !DIExpression()), !dbg !51
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store i32 4, i32* %localD, align 4, !dbg !51, !tbaa !42
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%7 = load i32, i32* %localD, align 4, !dbg !52, !tbaa !42
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store i32 %7, i32* %localA, align 4, !dbg !52, !tbaa !42
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%8 = bitcast i32* %localD to i8*, !dbg !53
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call void @llvm.lifetime.end.p0i8(i64 4, i8* %8) #4, !dbg !53
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%9 = bitcast i32* %localE to i8*, !dbg !54
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call void @llvm.lifetime.start.p0i8(i64 4, i8* %9) #4, !dbg !54
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call void @llvm.dbg.declare(metadata i32* %localE, metadata !27, metadata !DIExpression()), !dbg !54
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store i32 5, i32* %localE, align 4, !dbg !54, !tbaa !42
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%10 = load i32, i32* %localE, align 4, !dbg !55, !tbaa !42
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store i32 %10, i32* %localA, align 4, !dbg !55, !tbaa !42
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%11 = bitcast i32* %localE to i8*, !dbg !56
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call void @llvm.lifetime.end.p0i8(i64 4, i8* %11) #4, !dbg !56
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%12 = bitcast i32* %localF to i8*, !dbg !57
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call void @llvm.lifetime.start.p0i8(i64 4, i8* %12) #4, !dbg !57
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call void @llvm.dbg.declare(metadata i32* %localF, metadata !30, metadata !DIExpression()), !dbg !57
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store i32 6, i32* %localF, align 4, !dbg !57, !tbaa !42
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%13 = load i32, i32* %localF, align 4, !dbg !58, !tbaa !42
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store i32 %13, i32* %localA, align 4, !dbg !58, !tbaa !42
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%14 = bitcast i32* %localG to i8*, !dbg !59
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call void @llvm.lifetime.start.p0i8(i64 4, i8* %14) #4, !dbg !59
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call void @llvm.dbg.declare(metadata i32* %localG, metadata !32, metadata !DIExpression()), !dbg !59
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store i32 7, i32* %localG, align 4, !dbg !59, !tbaa !42
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%15 = load i32, i32* %localG, align 4, !dbg !60, !tbaa !42
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store i32 %15, i32* %localA, align 4, !dbg !60, !tbaa !42
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%16 = bitcast i32* %localG to i8*, !dbg !61
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call void @llvm.lifetime.end.p0i8(i64 4, i8* %16) #4, !dbg !61
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%17 = bitcast i32* %localF to i8*, !dbg !62
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call void @llvm.lifetime.end.p0i8(i64 4, i8* %17) #4, !dbg !62
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%18 = load i32, i32* %localA, align 4, !dbg !63, !tbaa !42
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%cmp1 = icmp eq i32 %18, 7, !dbg !63
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br i1 %cmp1, label %if.then2, label %if.end3, !dbg !63
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if.then2: ; preds = %if.end
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%19 = bitcast i32* %localH to i8*, !dbg !64
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call void @llvm.lifetime.start.p0i8(i64 4, i8* %19) #4, !dbg !64
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call void @llvm.dbg.declare(metadata i32* %localH, metadata !34, metadata !DIExpression()), !dbg !64
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store i32 8, i32* %localH, align 4, !dbg !64, !tbaa !42
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%20 = load i32, i32* %localH, align 4, !dbg !65, !tbaa !42
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store i32 %20, i32* %localA, align 4, !dbg !65, !tbaa !42
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%21 = bitcast i32* %localH to i8*, !dbg !66
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call void @llvm.lifetime.end.p0i8(i64 4, i8* %21) #4, !dbg !66
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br label %if.end3, !dbg !66
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if.end3: ; preds = %if.then2, %if.end
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%22 = load i32, i32* %localA, align 4, !dbg !67, !tbaa !42
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%cmp4 = icmp ne i32 %22, 8, !dbg !67
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%23 = zext i1 %cmp4 to i64, !dbg !67
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%cond = select i1 %cmp4, i32 -1, i32 0, !dbg !67
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%24 = bitcast i32* %localA to i8*, !dbg !68
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call void @llvm.lifetime.end.p0i8(i64 4, i8* %24) #4, !dbg !68
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ret i32 %cond, !dbg !67
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}
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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; Function Attrs: argmemonly nounwind
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declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #2
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; Function Attrs: nounwind readnone
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declare i32 @llvm.expect.i32(i32, i32) #3
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; Function Attrs: argmemonly nounwind
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declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #2
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attributes #0 = { norecurse nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-features"="+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone speculatable }
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attributes #2 = { argmemonly nounwind }
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attributes #3 = { nounwind readnone }
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attributes #4 = { nounwind }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5, !6}
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!llvm.ident = !{!7}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 7.0.0 (trunk)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "<stdin>", directory: "C:/path/to/directory", checksumkind: CSK_MD5, checksum: "169b810b4f895de9a9e19d8d0634af5d")
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!2 = !{}
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!3 = !{i32 1, !"NumRegisterParameters", i32 0}
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!4 = !{i32 2, !"CodeView", i32 1}
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!5 = !{i32 2, !"Debug Info Version", i32 3}
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!6 = !{i32 1, !"wchar_size", i32 2}
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!7 = !{!"clang version 7.0.0 (trunk)"}
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!8 = distinct !DISubprogram(name: "main", scope: !9, file: !9, line: 1, type: !10, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !16)
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!9 = !DIFile(filename: "lexicalblock.cxx", directory: "C:/path/to/directory", checksumkind: CSK_MD5, checksum: "169b810b4f895de9a9e19d8d0634af5d")
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!10 = !DISubroutineType(types: !11)
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!11 = !{!12, !12, !13}
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!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!13 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !14, size: 32)
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!14 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !15, size: 32)
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!15 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
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!16 = !{!17, !18, !19, !20, !22, !25, !27, !30, !32, !34}
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!17 = !DILocalVariable(name: "argv", arg: 2, scope: !8, file: !9, line: 1, type: !13)
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!18 = !DILocalVariable(name: "argc", arg: 1, scope: !8, file: !9, line: 1, type: !12)
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!19 = !DILocalVariable(name: "localA", scope: !8, file: !9, line: 2, type: !12)
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!20 = !DILocalVariable(name: "localB", scope: !21, file: !9, line: 5, type: !12)
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!21 = distinct !DILexicalBlock(scope: !8, file: !9, line: 4)
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!22 = !DILocalVariable(name: "localC", scope: !23, file: !9, line: 8, type: !12)
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!23 = distinct !DILexicalBlock(scope: !24, file: !9, line: 7)
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!24 = distinct !DILexicalBlock(scope: !21, file: !9, line: 7)
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!25 = !DILocalVariable(name: "localD", scope: !26, file: !9, line: 13, type: !12)
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!26 = distinct !DILexicalBlock(scope: !8, file: !9, line: 12)
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!27 = !DILocalVariable(name: "localE", scope: !28, file: !9, line: 19, type: !12)
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!28 = distinct !DILexicalBlock(scope: !29, file: !9, line: 18)
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!29 = distinct !DILexicalBlock(scope: !8, file: !9, line: 17)
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!30 = !DILocalVariable(name: "localF", scope: !31, file: !9, line: 25, type: !12)
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!31 = distinct !DILexicalBlock(scope: !8, file: !9, line: 24)
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!32 = !DILocalVariable(name: "localG", scope: !33, file: !9, line: 29, type: !12)
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!33 = distinct !DILexicalBlock(scope: !31, file: !9, line: 28)
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!34 = !DILocalVariable(name: "localH", scope: !35, file: !9, line: 35, type: !12)
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!35 = distinct !DILexicalBlock(scope: !36, file: !9, line: 34)
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!36 = distinct !DILexicalBlock(scope: !8, file: !9, line: 34)
|
||
|
|
!37 = !{!38, !38, i64 0}
|
||
|
|
!38 = !{!"any pointer", !39, i64 0}
|
||
|
|
!39 = !{!"omnipotent char", !40, i64 0}
|
||
|
|
!40 = !{!"Simple C++ TBAA"}
|
||
|
|
!41 = !DILocation(line: 1, scope: !8)
|
||
|
|
!42 = !{!43, !43, i64 0}
|
||
|
|
!43 = !{!"int", !39, i64 0}
|
||
|
|
!44 = !DILocation(line: 2, scope: !8)
|
||
|
|
!45 = !DILocation(line: 5, scope: !21)
|
||
|
|
!46 = !DILocation(line: 7, scope: !21)
|
||
|
|
!47 = !{!"branch_weights", i32 1, i32 2000}
|
||
|
|
!48 = !DILocation(line: 8, scope: !23)
|
||
|
|
!49 = !DILocation(line: 9, scope: !23)
|
||
|
|
!50 = !DILocation(line: 10, scope: !21)
|
||
|
|
!51 = !DILocation(line: 13, scope: !26)
|
||
|
|
!52 = !DILocation(line: 14, scope: !26)
|
||
|
|
!53 = !DILocation(line: 15, scope: !26)
|
||
|
|
!54 = !DILocation(line: 19, scope: !28)
|
||
|
|
!55 = !DILocation(line: 20, scope: !28)
|
||
|
|
!56 = !DILocation(line: 21, scope: !28)
|
||
|
|
!57 = !DILocation(line: 25, scope: !31)
|
||
|
|
!58 = !DILocation(line: 26, scope: !31)
|
||
|
|
!59 = !DILocation(line: 29, scope: !33)
|
||
|
|
!60 = !DILocation(line: 30, scope: !33)
|
||
|
|
!61 = !DILocation(line: 31, scope: !33)
|
||
|
|
!62 = !DILocation(line: 32, scope: !31)
|
||
|
|
!63 = !DILocation(line: 34, scope: !8)
|
||
|
|
!64 = !DILocation(line: 35, scope: !35)
|
||
|
|
!65 = !DILocation(line: 36, scope: !35)
|
||
|
|
!66 = !DILocation(line: 37, scope: !35)
|
||
|
|
!67 = !DILocation(line: 39, scope: !8)
|
||
|
|
!68 = !DILocation(line: 40, scope: !8)
|