derek.holloway
7502bf64a4
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115 lines
5.4 KiB
LLVM
115 lines
5.4 KiB
LLVM
; RUN: llc %s --filetype=obj -o - --dwarf-use-key-instructions \
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; RUN: | llvm-objdump -d - --no-show-raw-insn \
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; RUN: | FileCheck %s --check-prefix=OBJ
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; RUN: llc %s --filetype=obj -o - --dwarf-use-key-instructions \
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; RUN: | llvm-dwarfdump - --debug-line \
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; RUN: | FileCheck %s --check-prefix=DBG
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; OBJ:0000000000000000 <fun>:
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; OBJ-NEXT: 0: pushq %rbp
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; OBJ-NEXT: 1: pushq %r14
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; OBJ-NEXT: 3: pushq %rbx
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; OBJ-NEXT: 4: movq (%rip), %rax
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; OBJ-NEXT: b: movl (%rax), %ebp
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; OBJ-NEXT: d: callq 0x12 <fun+0x12>
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; OBJ-NEXT: 12: callq 0x17 <fun+0x17>
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; OBJ-NEXT: 17: movl %eax, %ebx
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; OBJ-NEXT: 19: addl %ebp, %ebx
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; OBJ-NEXT: 1b: movq (%rip), %r14
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; OBJ-NEXT: 22: movl $0x1, (%r14)
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; OBJ-NEXT: 29: callq 0x2e <fun+0x2e>
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; OBJ-NEXT: 2e: movl $0x2, (%r14)
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; OBJ-NEXT: 35: callq 0x3a <fun+0x3a>
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; OBJ-NEXT: 3a: movl $0x3, (%r14)
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; OBJ-NEXT: 41: callq 0x46 <fun+0x46>
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; OBJ-NEXT: 46: movl $0x4, (%r14)
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; OBJ-NEXT: 4d: callq 0x52 <fun+0x52>
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; OBJ-NEXT: 52: movl %ebx, %eax
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; OBJ-NEXT: 54: popq %rbx
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; OBJ-NEXT: 55: popq %r14
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; OBJ-NEXT: 57: popq %rbp
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; OBJ-NEXT: 58: retq
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; DBG: Address Line Column File ISA Discriminator OpIndex Flags
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; DBG-NEXT: ------------------ ------ ------ ------ --- ------------- ------- -------------
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; DBG-NEXT: 0x0000000000000000 1 0 0 0 0 0 is_stmt
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; DBG-NEXT: 0x0000000000000004 2 0 0 0 0 0 is_stmt prologue_end
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;; Test A:
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;; Check the 1st call (line 3) gets is_stmt despite having no atom group.
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; DBG-NEXT: 0x000000000000000d 3 0 0 0 0 0 is_stmt
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;; Test B:
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;; Check the 2nd call (line 4) gets is_stmt applied despite being part of group
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;; 1 and having lower precedence than the add. Check that the add stil gets
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;; is_stmt applied.
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;; There are two is_stmt line 4 entries because we don't float
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;; is_stmts up on the same line past other key instructions. The call is
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;; key, so the add's is_stmt floats up to the movl on the same line, but
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;; not past the call.
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; DBG-NEXT: 0x0000000000000012 4 0 0 0 0 0 is_stmt
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; DBG-NEXT: 0x0000000000000017 4 0 0 0 0 0 is_stmt
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;; Test C:
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;; Check that is_stmt floats up from the call (0x29) to the store (0x1b).
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; DBG-NEXT: 0x000000000000001b 5 0 0 0 0 0 is_stmt
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;; Test D:
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;; Check the is_stmt is not applied to the lower ranking instruction (0x2e).
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; DBG-NEXT: 0x000000000000002e 6 0 0 0 0 0
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; DBG-NEXT: 0x0000000000000035 7 0 0 0 0 0 is_stmt
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;; Test E:
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;; Check the is_stmt floats up to an instruction in the same group of the same
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;; or lower precedence (from call, 0x41, to `store 3`, 0x3a).
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; DBG-NEXT: 0x000000000000003a 8 0 0 0 0 0 is_stmt
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; DBG-NEXT: 0x0000000000000046 9 0 0 0 0 0 is_stmt
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; DBG-NEXT: 0x0000000000000052 10 0 0 0 0 0
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; DBG-NEXT: 0x0000000000000054 10 0 0 0 0 0 epilogue_begin
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; DBG-NEXT: 0x0000000000000059 10 0 0 0 0 0 end_sequence
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target triple = "x86_64-unknown-linux-gnu"
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@a = global i32 0
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@z = global i32 0
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define hidden i32 @fun() local_unnamed_addr !dbg !11 {
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entry:
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%b = load i32, ptr @a, !dbg !DILocation(line: 2, scope: !11)
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;; Test A:
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tail call void @f(), !dbg !DILocation(line: 3, scope: !11)
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;; Test B:
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%x = tail call i32 @g(), !dbg !DILocation(line: 4, scope: !11, atomGroup: 1, atomRank: 2)
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%y = add i32 %x, %b, !dbg !DILocation(line: 4, scope: !11, atomGroup: 1, atomRank: 1)
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;; Test C:
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store i32 1, ptr @z, !dbg !DILocation(line: 5, scope: !11, atomGroup: 2, atomRank: 2)
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tail call void @f(), !dbg !DILocation(line: 5, scope: !11, atomGroup: 2, atomRank: 1)
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;; Test D:
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store i32 2, ptr @z, !dbg !DILocation(line: 6, scope: !11, atomGroup: 3, atomRank: 2)
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tail call void @f(), !dbg !DILocation(line: 7, scope: !11, atomGroup: 3, atomRank: 1)
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;; Test E:
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store i32 3, ptr @z, !dbg !DILocation(line: 8, scope: !11, atomGroup: 4, atomRank: 2)
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tail call void @f(), !dbg !DILocation(line: 8, scope: !11, atomGroup: 4, atomRank: 1)
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store i32 4, ptr @z, !dbg !DILocation(line: 9, scope: !11, atomGroup: 5, atomRank: 1)
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tail call void @f(), !dbg !DILocation(line: 9, scope: !11, atomGroup: 5, atomRank: 1)
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ret i32 %y, !dbg !DILocation(line: 10, scope: !11)
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}
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declare void @f() local_unnamed_addr
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declare i32 @g() local_unnamed_addr
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!2, !3}
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!llvm.ident = !{!10}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_17, file: !1, producer: "clang version 19.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "test.cpp", directory: "/")
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!2 = !{i32 7, !"Dwarf Version", i32 5}
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!3 = !{i32 2, !"Debug Info Version", i32 3}
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!10 = !{!"clang version 19.0.0"}
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!11 = distinct !DISubprogram(name: "fun", scope: !1, file: !1, line: 1, type: !12, scopeLine: 1, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, keyInstructions: true)
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!12 = !DISubroutineType(types: !13)
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!13 = !{}
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