mirror of
https://github.com/c64scene-ar/llvm-6502.git
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b056aa798d
Move the specialized metadata nodes for the new debug info hierarchy
into place, finishing off PR22464. I've done bootstraps (and all that)
and I'm confident this commit is NFC as far as DWARF output is
concerned. Let me know if I'm wrong :).
The code changes are fairly mechanical:
- Bumped the "Debug Info Version".
- `DIBuilder` now creates the appropriate subclass of `MDNode`.
- Subclasses of DIDescriptor now expect to hold their "MD"
counterparts (e.g., `DIBasicType` expects `MDBasicType`).
- Deleted a ton of dead code in `AsmWriter.cpp` and `DebugInfo.cpp`
for printing comments.
- Big update to LangRef to describe the nodes in the new hierarchy.
Feel free to make it better.
Testcase changes are enormous. There's an accompanying clang commit on
its way.
If you have out-of-tree debug info testcases, I just broke your build.
- `upgrade-specialized-nodes.sh` is attached to PR22564. I used it to
update all the IR testcases.
- Unfortunately I failed to find way to script the updates to CHECK
lines, so I updated all of these by hand. This was fairly painful,
since the old CHECKs are difficult to reason about. That's one of
the benefits of the new hierarchy.
This work isn't quite finished, BTW. The `DIDescriptor` subclasses are
almost empty wrappers, but not quite: they still have loose casting
checks (see the `RETURN_FROM_RAW()` macro). Once they're completely
gutted, I'll rename the "MD" classes to "DI" and kill the wrappers. I
also expect to make a few schema changes now that it's easier to reason
about everything.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231082 91177308-0d34-0410-b5e6-96231b3b80d8
141 lines
5.8 KiB
LLVM
141 lines
5.8 KiB
LLVM
; RUN: llc -mtriple arm-unknown-linux-gnueabi -filetype asm -o - %s | FileCheck %s --check-prefix=CHECK-FP
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; RUN: llc -mtriple arm-unknown-linux-gnueabi -filetype asm -o - %s -disable-fp-elim | FileCheck %s --check-prefix=CHECK-FP-ELIM
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; RUN: llc -mtriple thumb-unknown-linux-gnueabi -filetype asm -o - %s | FileCheck %s --check-prefix=CHECK-THUMB-FP
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; RUN: llc -mtriple thumb-unknown-linux-gnueabi -filetype asm -o - %s -disable-fp-elim | FileCheck %s --check-prefix=CHECK-THUMB-FP-ELIM
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; Tests that the initial space allocated to the varargs on the stack is
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; taken into account in the the .cfi_ directives.
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; Generated from the C program:
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; #include <stdarg.h>
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;
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; extern int foo(int);
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;
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; int sum(int count, ...) {
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; va_list vl;
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; va_start(vl, count);
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; int sum = 0;
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; for (int i = 0; i < count; i++) {
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; sum += foo(va_arg(vl, int));
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; }
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; va_end(vl);
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; }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!9, !10}
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!llvm.ident = !{!11}
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!0 = !MDCompileUnit(language: DW_LANG_C99, producer: "clang version 3.5 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
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!1 = !MDFile(filename: "var.c", directory: "/tmp")
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!2 = !{}
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!3 = !{!4}
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!4 = !MDSubprogram(name: "sum", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 5, file: !1, scope: !5, type: !6, function: i32 (i32, ...)* @sum, variables: !2)
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!5 = !MDFile(filename: "var.c", directory: "/tmp")
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!6 = !MDSubroutineType(types: !7)
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!7 = !{!8, !8}
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!8 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!9 = !{i32 2, !"Dwarf Version", i32 4}
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!10 = !{i32 1, !"Debug Info Version", i32 3}
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!11 = !{!"clang version 3.5 "}
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!12 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "count", line: 5, arg: 1, scope: !4, file: !5, type: !8)
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!13 = !MDLocation(line: 5, scope: !4)
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!14 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "vl", line: 6, scope: !4, file: !5, type: !15)
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!15 = !MDDerivedType(tag: DW_TAG_typedef, name: "va_list", line: 30, file: !16, baseType: !17)
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!16 = !MDFile(filename: "/linux-x86_64-high/gcc_4.7.2/dbg/llvm/bin/../lib/clang/3.5/include/stdarg.h", directory: "/tmp")
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!17 = !MDDerivedType(tag: DW_TAG_typedef, name: "__builtin_va_list", line: 6, file: !1, baseType: !18)
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!18 = !MDCompositeType(tag: DW_TAG_structure_type, name: "__va_list", line: 6, size: 32, align: 32, file: !1, elements: !19)
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!19 = !{!20}
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!20 = !MDDerivedType(tag: DW_TAG_member, name: "__ap", line: 6, size: 32, align: 32, file: !1, scope: !18, baseType: !21)
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!21 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, baseType: null)
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!22 = !MDLocation(line: 6, scope: !4)
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!23 = !MDLocation(line: 7, scope: !4)
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!24 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "sum", line: 8, scope: !4, file: !5, type: !8)
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!25 = !MDLocation(line: 8, scope: !4)
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!26 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "i", line: 9, scope: !27, file: !5, type: !8)
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!27 = distinct !MDLexicalBlock(line: 9, column: 0, file: !1, scope: !4)
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!28 = !MDLocation(line: 9, scope: !27)
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!29 = !MDLocation(line: 10, scope: !30)
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!30 = distinct !MDLexicalBlock(line: 9, column: 0, file: !1, scope: !27)
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!31 = !MDLocation(line: 11, scope: !30)
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!32 = !MDLocation(line: 12, scope: !4)
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!33 = !MDLocation(line: 13, scope: !4)
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; CHECK-FP-LABEL: sum
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; CHECK-FP: .cfi_startproc
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; CHECK-FP: sub sp, sp, #16
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; CHECK-FP: .cfi_def_cfa_offset 16
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; CHECK-FP: push {r4, lr}
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; CHECK-FP: .cfi_def_cfa_offset 24
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; CHECK-FP: .cfi_offset lr, -20
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; CHECK-FP: .cfi_offset r4, -24
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; CHECK-FP: sub sp, sp, #8
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; CHECK-FP: .cfi_def_cfa_offset 32
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; CHECK-FP-ELIM-LABEL: sum
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; CHECK-FP-ELIM: .cfi_startproc
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; CHECK-FP-ELIM: sub sp, sp, #16
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; CHECK-FP-ELIM: .cfi_def_cfa_offset 16
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; CHECK-FP-ELIM: push {r4, r10, r11, lr}
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; CHECK-FP-ELIM: .cfi_def_cfa_offset 32
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; CHECK-FP-ELIM: .cfi_offset lr, -20
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; CHECK-FP-ELIM: .cfi_offset r11, -24
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; CHECK-FP-ELIM: .cfi_offset r10, -28
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; CHECK-FP-ELIM: .cfi_offset r4, -32
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; CHECK-FP-ELIM: add r11, sp, #8
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; CHECK-FP-ELIM: .cfi_def_cfa r11, 24
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; CHECK-THUMB-FP-LABEL: sum
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; CHECK-THUMB-FP: .cfi_startproc
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; CHECK-THUMB-FP: sub sp, #16
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; CHECK-THUMB-FP: .cfi_def_cfa_offset 16
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; CHECK-THUMB-FP: push {r4, lr}
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; CHECK-THUMB-FP: .cfi_def_cfa_offset 24
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; CHECK-THUMB-FP: .cfi_offset lr, -20
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; CHECK-THUMB-FP: .cfi_offset r4, -24
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; CHECK-THUMB-FP: sub sp, #8
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; CHECK-THUMB-FP: .cfi_def_cfa_offset 32
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; CHECK-THUMB-FP-ELIM-LABEL: sum
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; CHECK-THUMB-FP-ELIM: .cfi_startproc
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; CHECK-THUMB-FP-ELIM: sub sp, #16
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; CHECK-THUMB-FP-ELIM: .cfi_def_cfa_offset 16
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; CHECK-THUMB-FP-ELIM: push {r4, r6, r7, lr}
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; CHECK-THUMB-FP-ELIM: .cfi_def_cfa_offset 32
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; CHECK-THUMB-FP-ELIM: .cfi_offset lr, -20
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; CHECK-THUMB-FP-ELIM: .cfi_offset r7, -24
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; CHECK-THUMB-FP-ELIM: .cfi_offset r6, -28
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; CHECK-THUMB-FP-ELIM: .cfi_offset r4, -32
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; CHECK-THUMB-FP-ELIM: add r7, sp, #8
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; CHECK-THUMB-FP-ELIM: .cfi_def_cfa r7, 24
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define i32 @sum(i32 %count, ...) {
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entry:
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%vl = alloca i8*, align 4
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%vl1 = bitcast i8** %vl to i8*
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call void @llvm.va_start(i8* %vl1)
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%cmp4 = icmp sgt i32 %count, 0
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br i1 %cmp4, label %for.body, label %for.end
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for.body: ; preds = %entry, %for.body
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%i.05 = phi i32 [ %inc, %for.body ], [ 0, %entry ]
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%ap.cur = load i8*, i8** %vl, align 4
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%ap.next = getelementptr i8, i8* %ap.cur, i32 4
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store i8* %ap.next, i8** %vl, align 4
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%0 = bitcast i8* %ap.cur to i32*
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%1 = load i32, i32* %0, align 4
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%call = call i32 @foo(i32 %1) #1
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%inc = add nsw i32 %i.05, 1
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%exitcond = icmp eq i32 %inc, %count
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body, %entry
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call void @llvm.va_end(i8* %vl1)
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ret i32 undef
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}
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declare void @llvm.va_start(i8*) nounwind
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declare i32 @foo(i32)
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declare void @llvm.va_end(i8*) nounwind
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