fee9abe69c
This now analyzes calls to both intrinsics and functions.
For intrinsics, grab the ones we know and care about (mem* family) and
analyze the arguments.
For calls, use TLI to get more information about the libcalls, then
analyze the arguments if known.
```
auto-init.c:4:7: remark: Call to memset inserted by -ftrivial-auto-var-init. Memory operation size: 4096 bytes. [-Rpass-missed=annotation-remarks]
int var[1024];
^
```
Differential Revision: https://reviews.llvm.org/D97489
47 lines
1.8 KiB
LLVM
47 lines
1.8 KiB
LLVM
; 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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; No remarks for this function, no instructions with metadata.
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define void @none() {
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; YAML-NOT: Function: none
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ret void
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}
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; Emit a remark that reports an instruction we can't analyze.
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define void @unknown() {
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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: unknown
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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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ret void, !annotation !0, !dbg !DILocation(scope: !4)
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}
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; Emit a remark that reports an intrinsic call to an unknown intrinsic.
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define void @unknown_intrinsic(i32* %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: unknown_intrinsic
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call i8* @llvm.returnaddress(i32 0), !annotation !0, !dbg !DILocation(scope: !4)
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ret void
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}
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declare i8* @llvm.returnaddress(i32) nounwind readnone
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!llvm.module.flags = !{!1}
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!0 = !{ !"auto-init" }
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!1 = !{i32 2, !"Debug Info Version", i32 3}
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!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3)
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!3 = !DIFile(filename: "file", directory: "")
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!4 = distinct !DISubprogram(name: "function", scope: !3, file: !3, unit: !2)
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!5 = !DIBasicType(name: "byte", size: 8)
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!6 = !DILocalVariable(name: "destination", scope: !4, file: !3, type: !5)
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!7 = !DILocalVariable(name: "destination2", scope: !4, file: !3, type: !5)
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