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https://github.com/RPCS3/llvm-mirror.git
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97eb5e9037
This fixes pr22854. The core issue on the bug is that there are multiple instructions that print the same in assembly. In fact, there doesn't seem to be any syntax for specifying that a constant that fits in 8 bits should use a 32 bit immediate. The attached patch changes fast isel to consider i16immSExt8, i32immSExt8, and i64immSExt8. They were disabled because fastisel didn’t know to call the predicate back in the day. llvm-svn: 232223
201 lines
9.0 KiB
LLVM
201 lines
9.0 KiB
LLVM
; RUN: llc -split-dwarf=Enable -O0 %s -mtriple=x86_64-unknown-linux-gnu -filetype=obj -o %t
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; RUN: llvm-dwarfdump %t | FileCheck %s
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; RUN: llvm-objdump -h %t | FileCheck --check-prefix=HDR %s
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; CHECK: .debug_info contents:
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; CHECK: DW_TAG_compile_unit
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; CHECK-NEXT: DW_AT_stmt_list
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; CHECK-NEXT: DW_AT_GNU_dwo_name
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; CHECK-NEXT: DW_AT_comp_dir
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; CHECK-NEXT: DW_AT_GNU_dwo_id
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; CHECK-NEXT: DW_AT_GNU_addr_base [DW_FORM_sec_offset] (0x00000000)
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; CHECK: .debug_info.dwo contents:
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; CHECK: DW_AT_location [DW_FORM_sec_offset] ([[A:0x[0-9a-z]*]])
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; CHECK: DW_AT_location [DW_FORM_sec_offset] ([[E:0x[0-9a-z]*]])
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; CHECK: DW_AT_location [DW_FORM_sec_offset] ([[B:0x[0-9a-z]*]])
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; CHECK: DW_AT_location [DW_FORM_sec_offset] ([[D:0x[0-9a-z]*]])
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; CHECK: DW_AT_ranges [DW_FORM_sec_offset] (0x00000000
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; CHECK: .debug_loc contents:
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; CHECK-NOT: Beginning address offset
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; CHECK: .debug_loc.dwo contents:
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; Don't assume these locations are entirely correct - feel free to update them
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; if they've changed due to a bugfix, change in register allocation, etc.
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; CHECK: [[A]]: Beginning address index: 2
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; CHECK-NEXT: Length: 179
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; CHECK-NEXT: Location description: 11 00
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; CHECK-NEXT: {{^$}}
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; CHECK-NEXT: Beginning address index: 3
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; CHECK-NEXT: Length: 23
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; CHECK-NEXT: Location description: 50 93 04
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; CHECK: [[E]]: Beginning address index: 4
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; CHECK-NEXT: Length: 21
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; CHECK-NEXT: Location description: 50 93 04
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; CHECK: [[B]]: Beginning address index: 5
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; CHECK-NEXT: Length: 19
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; CHECK-NEXT: Location description: 50 93 04
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; CHECK: [[D]]: Beginning address index: 6
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; CHECK-NEXT: Length: 23
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; CHECK-NEXT: Location description: 50 93 04
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; Make sure we don't produce any relocations in any .dwo section (though in particular, debug_info.dwo)
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; HDR-NOT: .rela.{{.*}}.dwo
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; Make sure we have enough stuff in the debug_addr to cover the address indexes
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; (6 is the last index in debug_loc.dwo, making 7 entries of 8 bytes each, 7 * 8
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; == 56 base 10 == 38 base 16)
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; HDR: .debug_addr 00000038
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; HDR-NOT: .rela.{{.*}}.dwo
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; From the code:
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; extern int c;
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; static void foo (int p)
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; {
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; int a, b;
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; unsigned int d, e;
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; for (a = 0; a < 30; a++)
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; for (d = 0; d < 30; d++)
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; for (b = 0; b < 30; b++)
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; for (e = 0; e < 30; e++)
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; {
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; int *w = &c;
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; *w &= p;
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; }
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; }
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; void
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; bar ()
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; {
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; foo (1);
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; }
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; compiled with:
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; clang -g -S -gsplit-dwarf -O1 small.c
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@c = external global i32
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; Function Attrs: nounwind uwtable
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define void @bar() #0 {
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entry:
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tail call fastcc void @foo(), !dbg !27
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ret void, !dbg !28
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}
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; Function Attrs: nounwind uwtable
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define internal fastcc void @foo() #0 {
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entry:
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tail call void @llvm.dbg.value(metadata i32 1, i64 0, metadata !13, metadata !MDExpression()), !dbg !30
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tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !14, metadata !MDExpression()), !dbg !31
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%c.promoted9 = load i32, i32* @c, align 4, !dbg !32, !tbaa !33
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br label %for.cond1.preheader, !dbg !31
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for.cond1.preheader: ; preds = %for.inc16, %entry
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%and.lcssa.lcssa.lcssa10 = phi i32 [ %c.promoted9, %entry ], [ %and, %for.inc16 ]
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%a.08 = phi i32 [ 0, %entry ], [ %inc17, %for.inc16 ]
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br label %for.cond4.preheader, !dbg !37
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for.cond4.preheader: ; preds = %for.inc13, %for.cond1.preheader
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%and.lcssa.lcssa7 = phi i32 [ %and.lcssa.lcssa.lcssa10, %for.cond1.preheader ], [ %and, %for.inc13 ]
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%d.06 = phi i32 [ 0, %for.cond1.preheader ], [ %inc14, %for.inc13 ]
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br label %for.cond7.preheader, !dbg !38
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for.cond7.preheader: ; preds = %for.inc10, %for.cond4.preheader
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%and.lcssa5 = phi i32 [ %and.lcssa.lcssa7, %for.cond4.preheader ], [ %and, %for.inc10 ]
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%b.03 = phi i32 [ 0, %for.cond4.preheader ], [ %inc11, %for.inc10 ]
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br label %for.body9, !dbg !39
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for.body9: ; preds = %for.body9, %for.cond7.preheader
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%and2 = phi i32 [ %and.lcssa5, %for.cond7.preheader ], [ %and, %for.body9 ], !dbg !40
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%e.01 = phi i32 [ 0, %for.cond7.preheader ], [ %inc, %for.body9 ]
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tail call void @llvm.dbg.value(metadata i32* @c, i64 0, metadata !19, metadata !MDExpression()), !dbg !40
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%and = and i32 %and2, 1, !dbg !32
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%inc = add i32 %e.01, 1, !dbg !39
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tail call void @llvm.dbg.value(metadata i32 %inc, i64 0, metadata !18, metadata !MDExpression()), !dbg !39
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%exitcond = icmp eq i32 %inc, 30, !dbg !39
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br i1 %exitcond, label %for.inc10, label %for.body9, !dbg !39
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for.inc10: ; preds = %for.body9
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%inc11 = add nsw i32 %b.03, 1, !dbg !38
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tail call void @llvm.dbg.value(metadata i32 %inc11, i64 0, metadata !15, metadata !MDExpression()), !dbg !38
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%exitcond11 = icmp eq i32 %inc11, 30, !dbg !38
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br i1 %exitcond11, label %for.inc13, label %for.cond7.preheader, !dbg !38
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for.inc13: ; preds = %for.inc10
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%inc14 = add i32 %d.06, 1, !dbg !37
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tail call void @llvm.dbg.value(metadata i32 %inc14, i64 0, metadata !16, metadata !MDExpression()), !dbg !37
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%exitcond12 = icmp eq i32 %inc14, 30, !dbg !37
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br i1 %exitcond12, label %for.inc16, label %for.cond4.preheader, !dbg !37
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for.inc16: ; preds = %for.inc13
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%inc17 = add nsw i32 %a.08, 1, !dbg !31
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tail call void @llvm.dbg.value(metadata i32 %inc17, i64 0, metadata !14, metadata !MDExpression()), !dbg !31
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%exitcond13 = icmp eq i32 %inc17, 30, !dbg !31
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br i1 %exitcond13, label %for.end18, label %for.cond1.preheader, !dbg !31
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for.end18: ; preds = %for.inc16
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store i32 %and, i32* @c, align 4, !dbg !32, !tbaa !33
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ret void, !dbg !42
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
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attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!26, !43}
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!0 = !MDCompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 (trunk 191700) (llvm/trunk 191710)", isOptimized: true, splitDebugFilename: "small.dwo", emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
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!1 = !MDFile(filename: "small.c", directory: "/usr/local/google/home/echristo/tmp")
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!2 = !{}
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!3 = !{!4, !8}
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!4 = !MDSubprogram(name: "bar", line: 18, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, scopeLine: 19, file: !1, scope: !5, type: !6, function: void ()* @bar, variables: !2)
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!5 = !MDFile(filename: "small.c", directory: "/usr/local/google/home/echristo/tmp")
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!6 = !MDSubroutineType(types: !7)
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!7 = !{null}
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!8 = !MDSubprogram(name: "foo", line: 2, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 3, file: !1, scope: !5, type: !9, function: void ()* @foo, variables: !12)
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!9 = !MDSubroutineType(types: !10)
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!10 = !{null, !11}
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!11 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!12 = !{!13, !14, !15, !16, !18, !19}
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!13 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "p", line: 2, arg: 1, scope: !8, file: !5, type: !11)
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!14 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "a", line: 4, scope: !8, file: !5, type: !11)
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!15 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "b", line: 4, scope: !8, file: !5, type: !11)
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!16 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "d", line: 5, scope: !8, file: !5, type: !17)
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!17 = !MDBasicType(tag: DW_TAG_base_type, name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned)
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!18 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "e", line: 5, scope: !8, file: !5, type: !17)
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!19 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "w", line: 12, scope: !20, file: !5, type: !25)
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!20 = distinct !MDLexicalBlock(line: 11, column: 0, file: !1, scope: !21)
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!21 = distinct !MDLexicalBlock(line: 10, column: 0, file: !1, scope: !22)
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!22 = distinct !MDLexicalBlock(line: 9, column: 0, file: !1, scope: !23)
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!23 = distinct !MDLexicalBlock(line: 8, column: 0, file: !1, scope: !24)
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!24 = distinct !MDLexicalBlock(line: 7, column: 0, file: !1, scope: !8)
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!25 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !11)
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!26 = !{i32 2, !"Dwarf Version", i32 4}
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!27 = !MDLocation(line: 20, scope: !4)
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!28 = !MDLocation(line: 21, scope: !4)
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!29 = !{i32 1}
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!30 = !MDLocation(line: 2, scope: !8)
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!31 = !MDLocation(line: 7, scope: !24)
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!32 = !MDLocation(line: 13, scope: !20)
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!33 = !{!34, !34, i64 0}
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!34 = !{!"int", !35, i64 0}
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!35 = !{!"omnipotent char", !36, i64 0}
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!36 = !{!"Simple C/C++ TBAA"}
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!37 = !MDLocation(line: 8, scope: !23)
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!38 = !MDLocation(line: 9, scope: !22)
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!39 = !MDLocation(line: 10, scope: !21)
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!40 = !MDLocation(line: 12, scope: !20)
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!41 = !{i32* @c}
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!42 = !MDLocation(line: 15, scope: !8)
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!43 = !{i32 1, !"Debug Info Version", i32 3}
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!44 = !{i32 0}
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