[llvm] 035c106 - [DWARF][test] Test all the call-site realted attrs
Djordje Todorovic via llvm-commits
llvm-commits at lists.llvm.org
Fri Jan 24 01:54:09 PST 2020
Author: Djordje Todorovic
Date: 2020-01-24T10:53:52+01:00
New Revision: 035c106f378d6d7e54d5e98737d32f0f246316a2
URL: https://github.com/llvm/llvm-project/commit/035c106f378d6d7e54d5e98737d32f0f246316a2
DIFF: https://github.com/llvm/llvm-project/commit/035c106f378d6d7e54d5e98737d32f0f246316a2.diff
LOG: [DWARF][test] Test all the call-site realted attrs
Adding the test for the call site encoding in DWARF5 vs GNU extensions.
Some of the attributes were not covered by any test.
Differential Revision: https://reviews.llvm.org/D73266
Added:
llvm/test/DebugInfo/MIR/X86/call-site-gnu-vs-dwarf5-attrs.mir
Modified:
Removed:
################################################################################
diff --git a/llvm/test/DebugInfo/MIR/X86/call-site-gnu-vs-dwarf5-attrs.mir b/llvm/test/DebugInfo/MIR/X86/call-site-gnu-vs-dwarf5-attrs.mir
new file mode 100644
index 000000000000..1c5922ce76f0
--- /dev/null
+++ b/llvm/test/DebugInfo/MIR/X86/call-site-gnu-vs-dwarf5-attrs.mir
@@ -0,0 +1,184 @@
+# Test the call site encoding in DWARF5 vs GNU extensions.
+#
+# RUN: llc -dwarf-version 4 -debugger-tune=gdb -debug-entry-values -filetype=obj \
+# RUN: -mtriple=x86_64-unknown-unknown -start-after=machineverifier -o - %s \
+# RUN: | llvm-dwarfdump - | FileCheck %s -check-prefixes=CHECK-GNU
+#
+# RUN: llc -dwarf-version 5 -debugger-tune=lldb -debug-entry-values -filetype=obj \
+# RUN: -mtriple=x86_64-unknown-unknown -start-after=machineverifier -o - %s \
+# RUN: | llvm-dwarfdump - | FileCheck %s -check-prefixes=CHECK-DWARF5
+#
+# RUN: llc -dwarf-version 5 -debug-entry-values -filetype=obj \
+# RUN: -mtriple=x86_64-unknown-unknown -start-after=machineverifier -o - %s \
+# RUN: | llvm-dwarfdump - | FileCheck %s -check-prefixes=CHECK-DWARF5
+#
+# This is based on the following reproducer:
+#
+# extern void fn();
+# extern void fn2(int x);
+# extern int fn3();
+#
+# int fn1(int (*fn4) ()) {
+# fn();
+# fn2(5);
+#
+# int x = (*fn4)();
+# if (!x)
+# return fn3();
+# else
+# return -1;
+# }
+#
+# Check GNU extensions:
+#
+# CHECK-GNU: DW_TAG_subprogram
+# CHECK-GNU: DW_AT_GNU_all_call_sites (true)
+# CHECK-GNU: DW_TAG_GNU_call_site
+# CHECK-GNU-NEXT: DW_AT_abstract_origin
+# CHECK-GNU-NEXT: DW_AT_low_pc
+# CHECK-GNU: DW_TAG_GNU_call_site_parameter
+# CHECK-GNU-NEXT: DW_AT_location
+# CHECK-GNU-NEXT: DW_AT_GNU_call_site_value
+# CHECK-GNU: DW_TAG_GNU_call_site
+# CHECK-GNU-NEXT: DW_AT_GNU_call_site_target
+# CHECK-GNU-NEXT: DW_AT_low_pc
+# CHECK-GNU: DW_TAG_GNU_call_site
+# CHECK-GNU-NEXT: DW_AT_abstract_origin
+# CHECK-GNU-NEXT: DW_AT_GNU_tail_call
+#
+#
+# Check DWARF 5:
+#
+# CHECK-DWARF5: DW_TAG_subprogram
+# CHECK-DWARF5: DW_AT_call_all_calls (true)
+# CHECK-DWARF5: DW_TAG_call_site
+# CHECK-DWARF5-NEXT: DW_AT_call_origin
+# CHECK-DWARF5-NEXT: DW_AT_call_return_pc
+# CHECK-DWARF5: DW_TAG_call_site_parameter
+# CHECK-DWARF5-NEXT: DW_AT_location
+# CHECK-DWARF5-NEXT: DW_AT_call_value
+# CHECK-DWARF5: DW_TAG_call_site
+# CHECK-DWARF5-NEXT: DW_AT_call_target
+# CHECK-DWARF5-NEXT: DW_AT_call_return_pc
+# CHECK-DWARF5: DW_TAG_call_site
+# CHECK-DWARF5-NEXT: DW_AT_call_origin
+# CHECK-DWARF5-NEXT: DW_AT_call_tail_call
+#
+--- |
+ ; ModuleID = 'call-site-attrs.c'
+ source_filename = "call-site-attrs.c"
+ target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+ target triple = "x86_64-unknown-linux-gnu"
+ ; Function Attrs: nounwind uwtable
+ define dso_local i32 @fn1(i32 (...)* nocapture %fn4) local_unnamed_addr !dbg !18 {
+ entry:
+ call void @llvm.dbg.value(metadata i32 (...)* %fn4, metadata !23, metadata !DIExpression()), !dbg !25
+ tail call void (...) @fn(), !dbg !26
+ tail call void @fn2(i32 5), !dbg !27
+ %call = tail call i32 (...) %fn4(), !dbg !28
+ call void @llvm.dbg.value(metadata i32 %call, metadata !24, metadata !DIExpression()), !dbg !25
+ %tobool = icmp eq i32 %call, 0, !dbg !29
+ br i1 %tobool, label %if.then, label %cleanup, !dbg !31
+
+ if.then: ; preds = %entry
+ %call1 = tail call i32 (...) @fn3(), !dbg !32
+ ret i32 %call1, !dbg !33
+
+ cleanup: ; preds = %entry
+ ret i32 -1, !dbg !33
+ }
+ declare !dbg !4 dso_local void @fn(...) local_unnamed_addr
+ declare !dbg !7 dso_local void @fn2(i32) local_unnamed_addr
+ declare !dbg !11 dso_local i32 @fn3(...) local_unnamed_addr
+ ; Function Attrs: nounwind readnone speculatable willreturn
+ declare void @llvm.dbg.value(metadata, metadata, metadata)
+
+ !llvm.dbg.cu = !{!0}
+ !llvm.module.flags = !{!14, !15, !16}
+ !llvm.ident = !{!17}
+
+ !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 11.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, splitDebugInlining: false, nameTableKind: None)
+ !1 = !DIFile(filename: "call-site-attrs.c", directory: "/")
+ !2 = !{}
+ !3 = !{!4, !7, !11}
+ !4 = !DISubprogram(name: "fn", scope: !1, file: !1, line: 1, type: !5, spFlags: DISPFlagOptimized, retainedNodes: !2)
+ !5 = !DISubroutineType(types: !6)
+ !6 = !{null, null}
+ !7 = !DISubprogram(name: "fn2", scope: !1, file: !1, line: 2, type: !8, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
+ !8 = !DISubroutineType(types: !9)
+ !9 = !{null, !10}
+ !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+ !11 = !DISubprogram(name: "fn3", scope: !1, file: !1, line: 3, type: !12, spFlags: DISPFlagOptimized, retainedNodes: !2)
+ !12 = !DISubroutineType(types: !13)
+ !13 = !{!10, null}
+ !14 = !{i32 7, !"Dwarf Version", i32 4}
+ !15 = !{i32 2, !"Debug Info Version", i32 3}
+ !16 = !{i32 1, !"wchar_size", i32 4}
+ !17 = !{!"clang version 11.0.0"}
+ !18 = distinct !DISubprogram(name: "fn1", scope: !1, file: !1, line: 5, type: !19, scopeLine: 5, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !22)
+ !19 = !DISubroutineType(types: !20)
+ !20 = !{!10, !21}
+ !21 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64)
+ !22 = !{!23, !24}
+ !23 = !DILocalVariable(name: "fn4", arg: 1, scope: !18, file: !1, line: 5, type: !21)
+ !24 = !DILocalVariable(name: "x", scope: !18, file: !1, line: 9, type: !10)
+ !25 = !DILocation(line: 0, scope: !18)
+ !26 = !DILocation(line: 6, column: 3, scope: !18)
+ !27 = !DILocation(line: 7, column: 3, scope: !18)
+ !28 = !DILocation(line: 9, column: 11, scope: !18)
+ !29 = !DILocation(line: 10, column: 8, scope: !30)
+ !30 = distinct !DILexicalBlock(scope: !18, file: !1, line: 10, column: 7)
+ !31 = !DILocation(line: 10, column: 7, scope: !18)
+ !32 = !DILocation(line: 11, column: 12, scope: !30)
+ !33 = !DILocation(line: 14, column: 1, scope: !18)
+
+...
+---
+name: fn1
+callSites:
+ - { bb: 0, offset: 7, fwdArgRegs: [] }
+ - { bb: 0, offset: 9, fwdArgRegs:
+ - { arg: 0, reg: '$edi' } }
+ - { bb: 0, offset: 11, fwdArgRegs: [] }
+ - { bb: 2, offset: 7, fwdArgRegs: [] }
+body: |
+ bb.0.entry:
+ successors: %bb.2(0x30000000), %bb.1(0x50000000)
+ liveins: $rdi, $rbx
+
+ DBG_VALUE $rdi, $noreg, !23, !DIExpression(), debug-location !25
+ frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp
+ CFI_INSTRUCTION def_cfa_offset 16
+ CFI_INSTRUCTION offset $rbx, -16
+ $rbx = MOV64rr $rdi
+ DBG_VALUE $rbx, $noreg, !23, !DIExpression(), debug-location !25
+ dead $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, implicit-def $al, debug-location !26
+ CALL64pcrel32 @fn, csr_64, implicit $rsp, implicit $ssp, implicit $al, implicit-def $rsp, implicit-def $ssp, debug-location !26
+ $edi = MOV32ri 5, debug-location !27
+ CALL64pcrel32 @fn2, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit-def $rsp, implicit-def $ssp, debug-location !27
+ dead $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, implicit-def $al, debug-location !28
+ CALL64r killed renamable $rbx, csr_64, implicit $rsp, implicit $ssp, implicit $al, implicit-def $rsp, implicit-def $ssp, implicit-def $eax, debug-location !28
+ DBG_VALUE $eax, $noreg, !24, !DIExpression(), debug-location !25
+ TEST32rr killed renamable $eax, renamable $eax, implicit-def $eflags, debug-location !29
+ JCC_1 %bb.2, 4, implicit $eflags, debug-location !31
+
+ bb.1.cleanup:
+ DBG_VALUE $eax, $noreg, !24, !DIExpression(), debug-location !25
+ DBG_VALUE $rbx, $noreg, !23, !DIExpression(), debug-location !25
+ $eax = MOV32ri -1, debug-location !33
+ $rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !33
+ DBG_VALUE $rdi, $noreg, !23, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location !25
+ CFI_INSTRUCTION def_cfa_offset 8, debug-location !33
+ RETQ $eax, debug-location !33
+
+ bb.2.if.then:
+ CFI_INSTRUCTION def_cfa_offset 16, debug-location !32
+ DBG_VALUE $eax, $noreg, !24, !DIExpression(), debug-location !25
+ DBG_VALUE $rbx, $noreg, !23, !DIExpression(), debug-location !25
+ dead $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, implicit-def $al, debug-location !32
+ $rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !32
+ DBG_VALUE $rdi, $noreg, !23, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location !25
+ CFI_INSTRUCTION def_cfa_offset 8, debug-location !32
+ TAILJMPd64 @fn3, csr_64, implicit $rsp, implicit $ssp, implicit $rsp, implicit $ssp, implicit $al, debug-location !32
+
+...
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