mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-26 23:29:22 +00:00
83902832de
This reverts commit r218918, effectively reapplying r218914 after fixing an Ocaml bindings test and an Asan crash. The root cause of the latter was a tightened-up check in `DILexicalBlock::Verify()`, so I'll file a PR to investigate who requires the loose check (and why). Original commit message follows. -- This patch addresses the first stage of PR17891 by folding constant arguments together into a single MDString. Integers are stringified and a `\0` character is used as a separator. Part of PR17891. Note: I've attached my testcases upgrade scripts to the PR. If I've just broken your out-of-tree testcases, they might help. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219010 91177308-0d34-0410-b5e6-96231b3b80d8
108 lines
5.9 KiB
LLVM
108 lines
5.9 KiB
LLVM
; RUN: llc -O0 -mtriple=x86_64-apple-darwin -filetype=asm %s -o - | FileCheck %s
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; Ensure that we generate an indirect location for the variable length array a.
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; CHECK: ##DEBUG_VALUE: vla:a <- RDX
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; CHECK: DW_OP_breg1
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; rdar://problem/13658587
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;
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; generated from:
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;
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; int vla(int n) {
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; int a[n];
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; a[0] = 42;
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; return a[n-1];
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; }
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;
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; int main(int argc, char** argv) {
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; return vla(argc);
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; }
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; ModuleID = 'vla.c'
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.8.0"
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; Function Attrs: nounwind ssp uwtable
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define i32 @vla(i32 %n) nounwind ssp uwtable {
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entry:
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%n.addr = alloca i32, align 4
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%saved_stack = alloca i8*
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%cleanup.dest.slot = alloca i32
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store i32 %n, i32* %n.addr, align 4
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call void @llvm.dbg.declare(metadata !{i32* %n.addr}, metadata !15, metadata !{metadata !"0x102"}), !dbg !16
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%0 = load i32* %n.addr, align 4, !dbg !17
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%1 = zext i32 %0 to i64, !dbg !17
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%2 = call i8* @llvm.stacksave(), !dbg !17
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store i8* %2, i8** %saved_stack, !dbg !17
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%vla = alloca i32, i64 %1, align 16, !dbg !17
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call void @llvm.dbg.declare(metadata !{i32* %vla}, metadata !18, metadata !{metadata !"0x102"}), !dbg !17
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%arrayidx = getelementptr inbounds i32* %vla, i64 0, !dbg !22
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store i32 42, i32* %arrayidx, align 4, !dbg !22
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%3 = load i32* %n.addr, align 4, !dbg !23
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%sub = sub nsw i32 %3, 1, !dbg !23
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%idxprom = sext i32 %sub to i64, !dbg !23
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%arrayidx1 = getelementptr inbounds i32* %vla, i64 %idxprom, !dbg !23
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%4 = load i32* %arrayidx1, align 4, !dbg !23
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store i32 1, i32* %cleanup.dest.slot
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%5 = load i8** %saved_stack, !dbg !24
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call void @llvm.stackrestore(i8* %5), !dbg !24
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ret i32 %4, !dbg !23
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
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; Function Attrs: nounwind
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declare i8* @llvm.stacksave() nounwind
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; Function Attrs: nounwind
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declare void @llvm.stackrestore(i8*) nounwind
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; Function Attrs: nounwind ssp uwtable
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define i32 @main(i32 %argc, i8** %argv) nounwind ssp uwtable {
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entry:
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%retval = alloca i32, align 4
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%argc.addr = alloca i32, align 4
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%argv.addr = alloca i8**, align 8
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store i32 0, i32* %retval
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store i32 %argc, i32* %argc.addr, align 4
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call void @llvm.dbg.declare(metadata !{i32* %argc.addr}, metadata !25, metadata !{metadata !"0x102"}), !dbg !26
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store i8** %argv, i8*** %argv.addr, align 8
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call void @llvm.dbg.declare(metadata !{i8*** %argv.addr}, metadata !27, metadata !{metadata !"0x102"}), !dbg !26
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%0 = load i32* %argc.addr, align 4, !dbg !28
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%call = call i32 @vla(i32 %0), !dbg !28
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ret i32 %call, !dbg !28
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}
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!29}
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!0 = metadata !{metadata !"0x11\0012\00clang version 3.3 \000\00\000\00\001", metadata !1, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2} ; [ DW_TAG_compile_unit ] [/vla.c] [DW_LANG_C99]
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!1 = metadata !{metadata !"vla.c", metadata !""}
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!2 = metadata !{}
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!3 = metadata !{metadata !4, metadata !9}
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!4 = metadata !{metadata !"0x2e\00vla\00vla\00\001\000\001\000\006\00256\000\001", metadata !1, metadata !5, metadata !6, null, i32 (i32)* @vla, null, null, metadata !2} ; [ DW_TAG_subprogram ] [line 1] [def] [vla]
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!5 = metadata !{metadata !"0x29", metadata !1} ; [ DW_TAG_file_type ] [/vla.c]
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!6 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", i32 0, null, null, metadata !7, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!7 = metadata !{metadata !8, metadata !8}
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!8 = metadata !{metadata !"0x24\00int\000\0032\0032\000\000\005", null, null} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
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!9 = metadata !{metadata !"0x2e\00main\00main\00\007\000\001\000\006\00256\000\007", metadata !1, metadata !5, metadata !10, null, i32 (i32, i8**)* @main, null, null, metadata !2} ; [ DW_TAG_subprogram ] [line 7] [def] [main]
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!10 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", i32 0, null, null, metadata !11, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!11 = metadata !{metadata !8, metadata !8, metadata !12}
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!12 = metadata !{metadata !"0xf\00\000\0064\0064\000\000", null, null, metadata !13} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from ]
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!13 = metadata !{metadata !"0xf\00\000\0064\0064\000\000", null, null, metadata !14} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from char]
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!14 = metadata !{metadata !"0x24\00char\000\008\008\000\000\006", null, null} ; [ DW_TAG_base_type ] [char] [line 0, size 8, align 8, offset 0, enc DW_ATE_signed_char]
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!15 = metadata !{metadata !"0x101\00n\0016777217\000", metadata !4, metadata !5, metadata !8} ; [ DW_TAG_arg_variable ] [n] [line 1]
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!16 = metadata !{i32 1, i32 0, metadata !4, null}
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!17 = metadata !{i32 2, i32 0, metadata !4, null}
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!18 = metadata !{metadata !"0x100\00a\002\008192", metadata !4, metadata !5, metadata !19} ; [ DW_TAG_auto_variable ] [a] [line 2]
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!19 = metadata !{metadata !"0x1\00\000\000\0032\000\000", null, null, metadata !8, metadata !20, i32 0, null, null, null} ; [ DW_TAG_array_type ] [line 0, size 0, align 32, offset 0] [from int]
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!20 = metadata !{metadata !21}
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!21 = metadata !{metadata !"0x21\000\00-1"} ; [ DW_TAG_subrange_type ] [unbounded]
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!22 = metadata !{i32 3, i32 0, metadata !4, null}
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!23 = metadata !{i32 4, i32 0, metadata !4, null}
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!24 = metadata !{i32 5, i32 0, metadata !4, null}
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!25 = metadata !{metadata !"0x101\00argc\0016777223\000", metadata !9, metadata !5, metadata !8} ; [ DW_TAG_arg_variable ] [argc] [line 7]
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!26 = metadata !{i32 7, i32 0, metadata !9, null}
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!27 = metadata !{metadata !"0x101\00argv\0033554439\000", metadata !9, metadata !5, metadata !12} ; [ DW_TAG_arg_variable ] [argv] [line 7]
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!28 = metadata !{i32 8, i32 0, metadata !9, null}
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!29 = metadata !{i32 1, metadata !"Debug Info Version", i32 2}
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