forked from OSchip/llvm-project
[Remarks] Emit remarks for "auto-init" !annotations
Using the !annotation metadata, emit remarks pointing to code added by
`-ftrivial-auto-var-init` that survived the optimizer.
Example:
```
auto-init.c:4:7: remark: Initialization inserted by -ftrivial-auto-var-init. [-Rpass-missed=annotation-remarks]
int buf[1024];
^
```
The tests are testing various situations like calls/stores/other
instructions, with debug locations, and extra debug information on
purpose: more patches will come to improve the reporting to make it more
user-friendly, and these tests will show how the reporting evolves.
Differential Revision: https://reviews.llvm.org/D97405
This commit is contained in:
Francis Visoiu Mistrih
parent
00b3f2f310
commit
c49b600b2f
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@ -27,16 +27,40 @@ using namespace llvm::ore;
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#define DEBUG_TYPE "annotation-remarks"
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#define REMARK_PASS DEBUG_TYPE
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static void tryEmitAutoInitRemark(ArrayRef<Instruction *> Instructions,
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OptimizationRemarkEmitter &ORE) {
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// For every auto-init annotation generate a separate remark.
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for (Instruction *I : Instructions) {
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if (!I->hasMetadata(LLVMContext::MD_annotation))
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continue;
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for (const MDOperand &Op :
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I->getMetadata(LLVMContext::MD_annotation)->operands()) {
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if (cast<MDString>(Op.get())->getString() != "auto-init")
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continue;
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ORE.emit(
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OptimizationRemarkMissed(REMARK_PASS, "AutoInitUnknownInstruction", I)
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<< "Initialization inserted by -ftrivial-auto-var-init.");
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}
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}
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}
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static void runImpl(Function &F) {
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if (!OptimizationRemarkEmitter::allowExtraAnalysis(F, REMARK_PASS))
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return;
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// Track all annotated instructions aggregated based on their debug location.
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DenseMap<MDNode *, SmallVector<Instruction *, 4>> DebugLoc2Annotated;
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OptimizationRemarkEmitter ORE(&F);
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// For now, just generate a summary of the annotated instructions.
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// First, generate a summary of the annotated instructions.
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MapVector<StringRef, unsigned> Mapping;
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for (Instruction &I : instructions(F)) {
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if (!I.hasMetadata(LLVMContext::MD_annotation))
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continue;
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auto Iter = DebugLoc2Annotated.insert({I.getDebugLoc().getAsMDNode(), {}});
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Iter.first->second.push_back(&I);
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for (const MDOperand &Op :
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I.getMetadata(LLVMContext::MD_annotation)->operands()) {
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auto Iter = Mapping.insert({cast<MDString>(Op.get())->getString(), 0});
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@ -49,6 +73,16 @@ static void runImpl(Function &F) {
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ORE.emit(OptimizationRemarkAnalysis(REMARK_PASS, "AnnotationSummary", IP)
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<< "Annotated " << NV("count", KV.second) << " instructions with "
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<< NV("type", KV.first));
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// For each debug location, look for all the instructions with annotations and
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// generate more detailed remarks to be displayed at that location.
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for (auto &KV : DebugLoc2Annotated) {
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// Don't generate remarks with no debug location.
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if (!KV.first)
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continue;
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tryEmitAutoInitRemark(KV.second, ORE);
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}
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}
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namespace {
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@ -0,0 +1,365 @@
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; RUN: opt -annotation-remarks -o /dev/null -S -pass-remarks-output=%t.opt.yaml %s -pass-remarks-missed=annotation-remarks 2>&1 | FileCheck %s
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; RUN: cat %t.opt.yaml | FileCheck -check-prefix=YAML %s
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; Emit remarks for memcpy, memmove, memset, bzero.
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define void @known_call(i8* %src, i8* %dst, i64 %size) {
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; CHECK: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-LABEL: --- !Missed
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; YAML-NEXT: Pass: annotation-remarks
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; YAML-NEXT: Name: AutoInitUnknownInstruction
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; YAML-NEXT: DebugLoc:
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; YAML-NEXT: Function: known_call
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; YAML-NEXT: Args:
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; YAML-NEXT: - String: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-NEXT: ...
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call void @llvm.memset.p0i8.i64(i8* %dst, i8 0, i64 %size, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-LABEL: --- !Missed
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; YAML-NEXT: Pass: annotation-remarks
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; YAML-NEXT: Name: AutoInitUnknownInstruction
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; YAML-NEXT: DebugLoc:
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; YAML-NEXT: Function: known_call
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; YAML-NEXT: Args:
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; YAML-NEXT: - String: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-NEXT: ...
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst, i8* %src, i64 %size, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-LABEL: --- !Missed
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; YAML-NEXT: Pass: annotation-remarks
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; YAML-NEXT: Name: AutoInitUnknownInstruction
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; YAML-NEXT: DebugLoc:
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; YAML-NEXT: Function: known_call
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; YAML-NEXT: Args:
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; YAML-NEXT: - String: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-NEXT: ...
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call void @llvm.memmove.p0i8.p0i8.i64(i8* %dst, i8* %src, i64 %size, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-LABEL: --- !Missed
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; YAML-NEXT: Pass: annotation-remarks
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; YAML-NEXT: Name: AutoInitUnknownInstruction
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; YAML-NEXT: DebugLoc:
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; YAML-NEXT: Function: known_call
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; YAML-NEXT: Args:
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; YAML-NEXT: - String: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-NEXT: ...
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call void @bzero(i8* %dst, i64 %size), !annotation !0, !dbg !DILocation(scope: !4)
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ret void
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}
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; Emit remarks for memcpy, memmove, memset, bzero with known constant sizes.
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define void @known_call_with_size(i8* %src, i8* %dst) {
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-LABEL: --- !Missed
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; YAML-NEXT: Pass: annotation-remarks
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; YAML-NEXT: Name: AutoInitUnknownInstruction
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; YAML-NEXT: DebugLoc:
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; YAML-NEXT: Function: known_call_with_size
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; YAML-NEXT: Args:
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; YAML-NEXT: - String: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-NEXT: ...
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call void @llvm.memset.p0i8.i64(i8* %dst, i8 0, i64 32, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-LABEL: --- !Missed
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; YAML-NEXT: Pass: annotation-remarks
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; YAML-NEXT: Name: AutoInitUnknownInstruction
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; YAML-NEXT: DebugLoc:
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; YAML-NEXT: Function: known_call_with_size
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; YAML-NEXT: Args:
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; YAML-NEXT: - String: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-NEXT: ...
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst, i8* %src, i64 32, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-LABEL: --- !Missed
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; YAML-NEXT: Pass: annotation-remarks
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; YAML-NEXT: Name: AutoInitUnknownInstruction
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; YAML-NEXT: DebugLoc:
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; YAML-NEXT: Function: known_call_with_size
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; YAML-NEXT: Args:
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; YAML-NEXT: - String: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-NEXT: ...
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call void @llvm.memmove.p0i8.p0i8.i64(i8* %dst, i8* %src, i64 32, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-LABEL: --- !Missed
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; YAML-NEXT: Pass: annotation-remarks
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; YAML-NEXT: Name: AutoInitUnknownInstruction
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; YAML-NEXT: DebugLoc:
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; YAML-NEXT: Function: known_call_with_size
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; YAML-NEXT: Args:
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; YAML-NEXT: - String: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-NEXT: ...
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call void @bzero(i8* %dst, i64 32), !annotation !0, !dbg !DILocation(scope: !4)
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ret void
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}
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; Emit remarks for memcpy, memmove, memset marked volatile.
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define void @known_call_volatile(i8* %src, i8* %dst, i64 %size) {
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-LABEL: --- !Missed
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; YAML-NEXT: Pass: annotation-remarks
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; YAML-NEXT: Name: AutoInitUnknownInstruction
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; YAML-NEXT: DebugLoc:
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; YAML-NEXT: Function: known_call_volatile
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; YAML-NEXT: Args:
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; YAML-NEXT: - String: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-NEXT: ...
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call void @llvm.memset.p0i8.i64(i8* %dst, i8 0, i64 %size, i1 true), !annotation !0, !dbg !DILocation(scope: !4)
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-LABEL: --- !Missed
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; YAML-NEXT: Pass: annotation-remarks
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; YAML-NEXT: Name: AutoInitUnknownInstruction
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; YAML-NEXT: DebugLoc:
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; YAML-NEXT: Function: known_call_volatile
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; YAML-NEXT: Args:
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; YAML-NEXT: - String: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-NEXT: ...
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst, i8* %src, i64 %size, i1 true), !annotation !0, !dbg !DILocation(scope: !4)
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-LABEL: --- !Missed
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; YAML-NEXT: Pass: annotation-remarks
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; YAML-NEXT: Name: AutoInitUnknownInstruction
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; YAML-NEXT: DebugLoc:
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; YAML-NEXT: Function: known_call_volatile
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; YAML-NEXT: Args:
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; YAML-NEXT: - String: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-NEXT: ...
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call void @llvm.memmove.p0i8.p0i8.i64(i8* %dst, i8* %src, i64 %size, i1 true), !annotation !0, !dbg !DILocation(scope: !4)
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ret void
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}
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; Emit remarks for memcpy, memmove, memset marked atomic.
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define void @known_call_atomic(i8* %src, i8* %dst, i64 %size) {
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-LABEL: --- !Missed
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; YAML-NEXT: Pass: annotation-remarks
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; YAML-NEXT: Name: AutoInitUnknownInstruction
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; YAML-NEXT: DebugLoc:
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; YAML-NEXT: Function: known_call_atomic
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; YAML-NEXT: Args:
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; YAML-NEXT: - String: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-NEXT: ...
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call void @llvm.memset.element.unordered.atomic.p0i8.i64(i8* align 1 %dst, i8 0, i64 %size, i32 1), !annotation !0, !dbg !DILocation(scope: !4)
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-LABEL: --- !Missed
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; YAML-NEXT: Pass: annotation-remarks
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; YAML-NEXT: Name: AutoInitUnknownInstruction
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; YAML-NEXT: DebugLoc:
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; YAML-NEXT: Function: known_call_atomic
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; YAML-NEXT: Args:
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; YAML-NEXT: - String: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-NEXT: ...
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call void @llvm.memcpy.element.unordered.atomic.p0i8.p0i8.i64(i8* align 1 %dst, i8* align 1 %src, i64 %size, i32 1), !annotation !0, !dbg !DILocation(scope: !4)
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-LABEL: --- !Missed
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; YAML-NEXT: Pass: annotation-remarks
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; YAML-NEXT: Name: AutoInitUnknownInstruction
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; YAML-NEXT: DebugLoc:
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; YAML-NEXT: Function: known_call_atomic
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; YAML-NEXT: Args:
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; YAML-NEXT: - String: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-NEXT: ...
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call void @llvm.memmove.element.unordered.atomic.p0i8.p0i8.i64(i8* align 1 %dst, i8* align 1 %src, i64 %size, i32 1), !annotation !0, !dbg !DILocation(scope: !4)
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ret void
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}
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; Emit remarks for memcpy, memmove, memset, bzero with known constant sizes to
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; an alloca.
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define void @known_call_with_size_alloca(i8* %src) {
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-LABEL: --- !Missed
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; YAML-NEXT: Pass: annotation-remarks
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; YAML-NEXT: Name: AutoInitUnknownInstruction
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; YAML-NEXT: DebugLoc:
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; YAML-NEXT: Function: known_call_with_size_alloca
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; YAML-NEXT: Args:
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; YAML-NEXT: - String: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-NEXT: ...
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%dst = alloca i8
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call void @llvm.memset.p0i8.i64(i8* %dst, i8 0, i64 1, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-LABEL: --- !Missed
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; YAML-NEXT: Pass: annotation-remarks
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; YAML-NEXT: Name: AutoInitUnknownInstruction
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; YAML-NEXT: DebugLoc:
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; YAML-NEXT: Function: known_call_with_size_alloca
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; YAML-NEXT: Args:
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; YAML-NEXT: - String: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-NEXT: ...
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst, i8* %src, i64 1, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-LABEL: --- !Missed
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; YAML-NEXT: Pass: annotation-remarks
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; YAML-NEXT: Name: AutoInitUnknownInstruction
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; YAML-NEXT: DebugLoc:
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; YAML-NEXT: Function: known_call_with_size_alloca
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; YAML-NEXT: Args:
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; YAML-NEXT: - String: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-NEXT: ...
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call void @llvm.memmove.p0i8.p0i8.i64(i8* %dst, i8* %src, i64 1, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-LABEL: --- !Missed
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; YAML-NEXT: Pass: annotation-remarks
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; YAML-NEXT: Name: AutoInitUnknownInstruction
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; YAML-NEXT: DebugLoc:
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; YAML-NEXT: Function: known_call_with_size_alloca
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; YAML-NEXT: Args:
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; YAML-NEXT: - String: Initialization inserted by -ftrivial-auto-var-init.
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; YAML-NEXT: ...
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call void @bzero(i8* %dst, i64 1), !annotation !0, !dbg !DILocation(scope: !4)
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ret void
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}
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; Emit remarks for memcpy, memmove, memset, bzero with known constant sizes to
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; an alloca through a GEP.
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define void @known_call_with_size_alloca_gep(i8* %src) {
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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%dst = alloca i8
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%gep = getelementptr i8, i8* %dst, i32 0
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call void @llvm.memset.p0i8.i64(i8* %gep, i8 0, i64 1, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %gep, i8* %src, i64 1, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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call void @llvm.memmove.p0i8.p0i8.i64(i8* %gep, i8* %src, i64 1, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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call void @bzero(i8* %gep, i64 1), !annotation !0, !dbg !DILocation(scope: !4)
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ret void
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}
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; Emit remarks for memcpy, memmove, memset, bzero with known constant sizes to
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; an alloca through a GEP in an array.
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define void @known_call_with_size_alloca_gep_array(i8* %src) {
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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%dst = alloca [2 x i8]
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%gep = getelementptr [2 x i8], [2 x i8]* %dst, i64 0, i64 0
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call void @llvm.memset.p0i8.i64(i8* %gep, i8 0, i64 1, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %gep, i8* %src, i64 1, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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call void @llvm.memmove.p0i8.p0i8.i64(i8* %gep, i8* %src, i64 1, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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call void @bzero(i8* %gep, i64 1), !annotation !0, !dbg !DILocation(scope: !4)
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ret void
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}
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; Emit remarks for memcpy, memmove, memset, bzero with known constant sizes to
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; an alloca through a bitcast.
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define void @known_call_with_size_alloca_bitcast(i8* %src) {
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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%dst = alloca [2 x i8]
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%bc = bitcast [2 x i8]* %dst to i8*
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call void @llvm.memset.p0i8.i64(i8* %bc, i8 0, i64 1, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %bc, i8* %src, i64 1, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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call void @llvm.memmove.p0i8.p0i8.i64(i8* %bc, i8* %src, i64 1, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
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; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
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call void @bzero(i8* %bc, i64 1), !annotation !0, !dbg !DILocation(scope: !4)
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ret void
|
||||
}
|
||||
|
||||
; Emit remarks for memcpy, memmove, memset, bzero with known constant sizes to an alloca that has a DILocalVariable attached.
|
||||
define void @known_call_with_size_alloca_di(i8* %src) {
|
||||
; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
|
||||
%dst = alloca i8
|
||||
call void @llvm.dbg.declare(metadata i8* %dst, metadata !6, metadata !DIExpression()), !dbg !DILocation(scope: !4)
|
||||
call void @llvm.memset.p0i8.i64(i8* %dst, i8 0, i64 1, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
|
||||
; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
|
||||
call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst, i8* %src, i64 1, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
|
||||
; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
|
||||
call void @llvm.memmove.p0i8.p0i8.i64(i8* %dst, i8* %src, i64 1, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
|
||||
; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
|
||||
call void @bzero(i8* %dst, i64 1), !annotation !0, !dbg !DILocation(scope: !4)
|
||||
ret void
|
||||
}
|
||||
|
||||
; Emit remarks for memcpy, memmove, memset, bzero with known constant sizes to
|
||||
; an alloca that has more than one DILocalVariable attached.
|
||||
define void @known_call_with_size_alloca_di_multiple(i8* %src) {
|
||||
; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
|
||||
%dst = alloca i8
|
||||
call void @llvm.dbg.declare(metadata i8* %dst, metadata !6, metadata !DIExpression()), !dbg !DILocation(scope: !4)
|
||||
call void @llvm.memset.p0i8.i64(i8* %dst, i8 0, i64 1, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
|
||||
; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
|
||||
call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst, i8* %src, i64 1, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
|
||||
; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
|
||||
call void @llvm.memmove.p0i8.p0i8.i64(i8* %dst, i8* %src, i64 1, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
|
||||
; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
|
||||
call void @bzero(i8* %dst, i64 1), !annotation !0, !dbg !DILocation(scope: !4)
|
||||
ret void
|
||||
}
|
||||
|
||||
; Emit remarks for memcpy, memmove, memset, bzero with known constant sizes to
|
||||
; a PHI node that can be two different allocas.
|
||||
define void @known_call_with_size_alloca_phi(i8* %src) {
|
||||
; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
|
||||
entry:
|
||||
%dst = alloca i8
|
||||
%dst2 = alloca i8
|
||||
%cmp = icmp eq i32 undef, undef
|
||||
br i1 %cmp, label %l0, label %l1
|
||||
l0:
|
||||
br label %l2
|
||||
l1:
|
||||
br label %l2
|
||||
l2:
|
||||
%phidst = phi i8* [ %dst, %l0 ], [ %dst2, %l1 ]
|
||||
call void @llvm.memset.p0i8.i64(i8* %phidst, i8 0, i64 1, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
|
||||
; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
|
||||
call void @llvm.memcpy.p0i8.p0i8.i64(i8* %phidst, i8* %src, i64 1, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
|
||||
; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
|
||||
call void @llvm.memmove.p0i8.p0i8.i64(i8* %phidst, i8* %src, i64 1, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
|
||||
; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
|
||||
call void @bzero(i8* %phidst, i64 1), !annotation !0, !dbg !DILocation(scope: !4)
|
||||
ret void
|
||||
}
|
||||
|
||||
; Emit remarks for memcpy, memmove, memset, bzero with known constant sizes to
|
||||
; a PHI node that can be two different allocas, where one of it has multiple
|
||||
; DILocalVariable.
|
||||
define void @known_call_with_size_alloca_phi_di_multiple(i8* %src) {
|
||||
; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
|
||||
entry:
|
||||
%dst = alloca i8
|
||||
%dst2 = alloca i8
|
||||
call void @llvm.dbg.declare(metadata i8* %dst, metadata !6, metadata !DIExpression()), !dbg !DILocation(scope: !4)
|
||||
call void @llvm.dbg.declare(metadata i8* %dst, metadata !7, metadata !DIExpression()), !dbg !DILocation(scope: !4)
|
||||
%cmp = icmp eq i32 undef, undef
|
||||
br i1 %cmp, label %l0, label %l1
|
||||
l0:
|
||||
br label %l2
|
||||
l1:
|
||||
br label %l2
|
||||
l2:
|
||||
%phidst = phi i8* [ %dst, %l0 ], [ %dst2, %l1 ]
|
||||
call void @llvm.memset.p0i8.i64(i8* %phidst, i8 0, i64 1, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
|
||||
; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
|
||||
call void @llvm.memcpy.p0i8.p0i8.i64(i8* %phidst, i8* %src, i64 1, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
|
||||
; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
|
||||
call void @llvm.memmove.p0i8.p0i8.i64(i8* %phidst, i8* %src, i64 1, i1 false), !annotation !0, !dbg !DILocation(scope: !4)
|
||||
; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
|
||||
call void @bzero(i8* %phidst, i64 1), !annotation !0, !dbg !DILocation(scope: !4)
|
||||
ret void
|
||||
}
|
||||
|
||||
declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone speculatable willreturn
|
||||
declare void @llvm.memset.p0i8.i64(i8* nocapture writeonly, i8, i64, i1 immarg) argmemonly nounwind willreturn writeonly
|
||||
declare void @llvm.memmove.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i1 immarg) argmemonly nounwind willreturn
|
||||
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* noalias nocapture writeonly, i8* noalias nocapture readonly, i64, i1 immarg) argmemonly nounwind willreturn
|
||||
|
||||
declare void @llvm.memset.element.unordered.atomic.p0i8.i64(i8* nocapture writeonly, i8, i64, i32 immarg) argmemonly nounwind willreturn writeonly
|
||||
declare void @llvm.memcpy.element.unordered.atomic.p0i8.p0i8.i64(i8* nocapture writeonly, i8* nocapture readonly, i64, i32 immarg) argmemonly nounwind willreturn
|
||||
declare void @llvm.memmove.element.unordered.atomic.p0i8.p0i8.i64(i8* nocapture writeonly, i8* nocapture readonly, i64, i32 immarg) argmemonly nounwind willreturn
|
||||
|
||||
declare void @bzero(i8* nocapture, i64) nofree nounwind
|
||||
|
||||
!llvm.module.flags = !{!1}
|
||||
!0 = !{ !"auto-init" }
|
||||
!1 = !{i32 2, !"Debug Info Version", i32 3}
|
||||
!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3)
|
||||
!3 = !DIFile(filename: "file", directory: "")
|
||||
!4 = distinct !DISubprogram(name: "function", scope: !3, file: !3, unit: !2)
|
||||
!5 = !DIBasicType(name: "byte", size: 8)
|
||||
!6 = !DILocalVariable(name: "destination", scope: !4, file: !3, type: !5)
|
||||
!7 = !DILocalVariable(name: "destination2", scope: !4, file: !3, type: !5)
|
||||
|
|
@ -0,0 +1,164 @@
|
|||
; RUN: opt -annotation-remarks -o /dev/null -S -pass-remarks-output=%t.opt.yaml %s -pass-remarks-missed=annotation-remarks 2>&1 | FileCheck %s
|
||||
; RUN: cat %t.opt.yaml | FileCheck -check-prefix=YAML %s
|
||||
|
||||
; Emit a remark that reports a store.
|
||||
define void @store(i32* %dst) {
|
||||
; CHECK: Initialization inserted by -ftrivial-auto-var-init.
|
||||
; YAML-LABEL: --- !Missed
|
||||
; YAML-NEXT: Pass: annotation-remarks
|
||||
; YAML-NEXT: Name: AutoInitUnknownInstruction
|
||||
; YAML-NEXT: DebugLoc:
|
||||
; YAML-NEXT: Function: store
|
||||
; YAML-NEXT: Args:
|
||||
; YAML-NEXT: - String: Initialization inserted by -ftrivial-auto-var-init.
|
||||
; YAML-NEXT: ...
|
||||
store i32 0, i32* %dst, !annotation !0, !dbg !DILocation(scope: !4)
|
||||
ret void
|
||||
}
|
||||
|
||||
; Emit a remark that reports a volatile store.
|
||||
define void @volatile_store(i32* %dst) {
|
||||
; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
|
||||
; YAML-LABEL: --- !Missed
|
||||
; YAML-NEXT: Pass: annotation-remarks
|
||||
; YAML-NEXT: Name: AutoInitUnknownInstruction
|
||||
; YAML-NEXT: DebugLoc:
|
||||
; YAML-NEXT: Function: volatile_store
|
||||
; YAML-NEXT: Args:
|
||||
; YAML-NEXT: - String: Initialization inserted by -ftrivial-auto-var-init.
|
||||
; YAML-NEXT: ...
|
||||
store volatile i32 0, i32* %dst, !annotation !0, !dbg !DILocation(scope: !4)
|
||||
ret void
|
||||
}
|
||||
|
||||
; Emit a remark that reports an atomic store.
|
||||
define void @atomic_store(i32* %dst) {
|
||||
; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
|
||||
; YAML-LABEL: --- !Missed
|
||||
; YAML-NEXT: Pass: annotation-remarks
|
||||
; YAML-NEXT: Name: AutoInitUnknownInstruction
|
||||
; YAML-NEXT: DebugLoc:
|
||||
; YAML-NEXT: Function: atomic_store
|
||||
; YAML-NEXT: Args:
|
||||
; YAML-NEXT: - String: Initialization inserted by -ftrivial-auto-var-init.
|
||||
; YAML-NEXT: ...
|
||||
store atomic i32 0, i32* %dst unordered, align 4, !annotation !0, !dbg !DILocation(scope: !4)
|
||||
ret void
|
||||
}
|
||||
|
||||
; Emit a remark that reports a store to an alloca.
|
||||
define void @store_alloca() {
|
||||
; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
|
||||
; YAML-LABEL: --- !Missed
|
||||
; YAML-NEXT: Pass: annotation-remarks
|
||||
; YAML-NEXT: Name: AutoInitUnknownInstruction
|
||||
; YAML-NEXT: DebugLoc:
|
||||
; YAML-NEXT: Function: store_alloca
|
||||
; YAML-NEXT: Args:
|
||||
; YAML-NEXT: - String: Initialization inserted by -ftrivial-auto-var-init.
|
||||
; YAML-NEXT: ...
|
||||
%dst = alloca i32
|
||||
store i32 0, i32* %dst, !annotation !0, !dbg !DILocation(scope: !4)
|
||||
ret void
|
||||
}
|
||||
|
||||
; Emit a remark that reports a store to an alloca through a GEP.
|
||||
define void @store_alloca_gep() {
|
||||
; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
|
||||
%dst = alloca i32
|
||||
%gep = getelementptr i32, i32* %dst, i32 0
|
||||
store i32 0, i32* %gep, !annotation !0, !dbg !DILocation(scope: !4)
|
||||
ret void
|
||||
}
|
||||
|
||||
; Emit a remark that reports a store to an alloca through a GEP in an array.
|
||||
define void @store_alloca_gep_array() {
|
||||
; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
|
||||
%dst = alloca [2 x i32]
|
||||
%gep = getelementptr [2 x i32], [2 x i32]* %dst, i64 0, i64 0
|
||||
store i32 0, i32* %gep, !annotation !0, !dbg !DILocation(scope: !4)
|
||||
ret void
|
||||
}
|
||||
|
||||
; Emit a remark that reports a store to an alloca through a bitcast.
|
||||
define void @store_alloca_bitcast() {
|
||||
; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
|
||||
%dst = alloca [2 x i16]
|
||||
%bc = bitcast [2 x i16]* %dst to i32*
|
||||
store i32 0, i32* %bc, !annotation !0, !dbg !DILocation(scope: !4)
|
||||
ret void
|
||||
}
|
||||
|
||||
; Emit a remark that reports a store to an alloca that has a DILocalVariable
|
||||
; attached.
|
||||
define void @store_alloca_di() {
|
||||
; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
|
||||
%dst = alloca i32
|
||||
store i32 0, i32* %dst, !annotation !0, !dbg !DILocation(scope: !4)
|
||||
call void @llvm.dbg.declare(metadata i32* %dst, metadata !6, metadata !DIExpression()), !dbg !DILocation(scope: !4)
|
||||
ret void
|
||||
}
|
||||
|
||||
; Emit a remark that reports a store to an alloca that has more than one
|
||||
; DILocalVariable attached.
|
||||
define void @store_alloca_di_multiple() {
|
||||
; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
|
||||
%dst = alloca i32
|
||||
store i32 0, i32* %dst, !annotation !0, !dbg !DILocation(scope: !4)
|
||||
call void @llvm.dbg.declare(metadata i32* %dst, metadata !6, metadata !DIExpression()), !dbg !DILocation(scope: !4)
|
||||
call void @llvm.dbg.declare(metadata i32* %dst, metadata !7, metadata !DIExpression()), !dbg !DILocation(scope: !4)
|
||||
ret void
|
||||
}
|
||||
|
||||
; Emit a remark that reports a store to a PHI node that can be two different
|
||||
; allocas.
|
||||
define void @store_alloca_phi() {
|
||||
; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
|
||||
entry:
|
||||
%dst = alloca i32
|
||||
%dst2 = alloca i32
|
||||
%cmp = icmp eq i32 undef, undef
|
||||
br i1 %cmp, label %l0, label %l1
|
||||
l0:
|
||||
br label %l2
|
||||
l1:
|
||||
br label %l2
|
||||
l2:
|
||||
%phidst = phi i32* [ %dst, %l0 ], [ %dst2, %l1 ]
|
||||
store i32 0, i32* %phidst, !annotation !0, !dbg !DILocation(scope: !4)
|
||||
ret void
|
||||
}
|
||||
|
||||
; Emit a remark that reports a store to a PHI node that can be two different
|
||||
; allocas, where one of it has multiple DILocalVariable.
|
||||
define void @store_alloca_phi_di_multiple() {
|
||||
; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
|
||||
entry:
|
||||
%dst = alloca i32
|
||||
%dst2 = alloca i32
|
||||
call void @llvm.dbg.declare(metadata i32* %dst, metadata !6, metadata !DIExpression()), !dbg !DILocation(scope: !4)
|
||||
call void @llvm.dbg.declare(metadata i32* %dst, metadata !7, metadata !DIExpression()), !dbg !DILocation(scope: !4)
|
||||
%cmp = icmp eq i32 undef, undef
|
||||
br i1 %cmp, label %l0, label %l1
|
||||
l0:
|
||||
br label %l2
|
||||
l1:
|
||||
br label %l2
|
||||
l2:
|
||||
%phidst = phi i32* [ %dst, %l0 ], [ %dst2, %l1 ]
|
||||
store i32 0, i32* %phidst, !annotation !0, !dbg !DILocation(scope: !4)
|
||||
ret void
|
||||
}
|
||||
|
||||
; Function Attrs: nounwind readnone speculatable willreturn
|
||||
declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone speculatable willreturn
|
||||
|
||||
!llvm.module.flags = !{!1}
|
||||
!0 = !{ !"auto-init" }
|
||||
!1 = !{i32 2, !"Debug Info Version", i32 3}
|
||||
!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3)
|
||||
!3 = !DIFile(filename: "file", directory: "")
|
||||
!4 = distinct !DISubprogram(name: "function", scope: !3, file: !3, unit: !2)
|
||||
!5 = !DIBasicType(name: "int", size: 32)
|
||||
!6 = !DILocalVariable(name: "destination", scope: !4, file: !3, type: !5)
|
||||
!7 = !DILocalVariable(name: "destination2", scope: !4, file: !3, type: !5)
|
||||
|
|
@ -0,0 +1,62 @@
|
|||
; RUN: opt -annotation-remarks -o /dev/null -S -pass-remarks-output=%t.opt.yaml %s -pass-remarks-missed=annotation-remarks 2>&1 | FileCheck %s
|
||||
; RUN: cat %t.opt.yaml | FileCheck -check-prefix=YAML %s
|
||||
|
||||
; No remarks for this function, no instructions with metadata.
|
||||
define void @none() {
|
||||
; YAML-NOT: Function: none
|
||||
ret void
|
||||
}
|
||||
|
||||
; Emit a remark that reports an instruction we can't analyze.
|
||||
define void @unknown() {
|
||||
; CHECK: Initialization inserted by -ftrivial-auto-var-init.
|
||||
; YAML-LABEL: --- !Missed
|
||||
; YAML-NEXT: Pass: annotation-remarks
|
||||
; YAML-NEXT: Name: AutoInitUnknownInstruction
|
||||
; YAML-NEXT: DebugLoc:
|
||||
; YAML-NEXT: Function: unknown
|
||||
; YAML-NEXT: Args:
|
||||
; YAML-NEXT: - String: Initialization inserted by -ftrivial-auto-var-init.
|
||||
; YAML-NEXT: ...
|
||||
ret void, !annotation !0, !dbg !DILocation(scope: !4)
|
||||
}
|
||||
|
||||
; Emit a remark that reports an intrinsic call to an unknown intrinsic.
|
||||
define void @unknown_intrinsic(i32* %dst) {
|
||||
; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
|
||||
; YAML-LABEL: --- !Missed
|
||||
; YAML-NEXT: Pass: annotation-remarks
|
||||
; YAML-NEXT: Name: AutoInitUnknownInstruction
|
||||
; YAML-NEXT: DebugLoc:
|
||||
; YAML-NEXT: Function: unknown_intrinsic
|
||||
call i8* @llvm.returnaddress(i32 0), !annotation !0, !dbg !DILocation(scope: !4)
|
||||
ret void
|
||||
}
|
||||
|
||||
; Emit a remark that reports a function call to a known libcall.
|
||||
define void @known_call(i8* %dst) {
|
||||
; CHECK-NEXT: Initialization inserted by -ftrivial-auto-var-init.
|
||||
; YAML-LABEL: --- !Missed
|
||||
; YAML-NEXT: Pass: annotation-remarks
|
||||
; YAML-NEXT: Name: AutoInitUnknownInstruction
|
||||
; YAML-NEXT: DebugLoc:
|
||||
; YAML-NEXT: Function: known_call
|
||||
; YAML-NEXT: Args:
|
||||
; YAML-NEXT: - String: Initialization inserted by -ftrivial-auto-var-init.
|
||||
; YAML-NEXT: ...
|
||||
call i8* @memset(i8* %dst, i32 0, i64 32), !annotation !0, !dbg !DILocation(scope: !4)
|
||||
ret void
|
||||
}
|
||||
|
||||
declare i8* @llvm.returnaddress(i32) nounwind readnone
|
||||
declare i8* @memset(i8*, i32, i64)
|
||||
|
||||
!llvm.module.flags = !{!1}
|
||||
!0 = !{ !"auto-init" }
|
||||
!1 = !{i32 2, !"Debug Info Version", i32 3}
|
||||
!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3)
|
||||
!3 = !DIFile(filename: "file", directory: "")
|
||||
!4 = distinct !DISubprogram(name: "function", scope: !3, file: !3, unit: !2)
|
||||
!5 = !DIBasicType(name: "byte", size: 8)
|
||||
!6 = !DILocalVariable(name: "destination", scope: !4, file: !3, type: !5)
|
||||
!7 = !DILocalVariable(name: "destination2", scope: !4, file: !3, type: !5)
|
||||
Loading…
Reference in New Issue