82 lines
3.1 KiB
LLVM
82 lines
3.1 KiB
LLVM
; RUN: llc -O3 -stop-after virtregrewriter %s -o - | FileCheck %s
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target datalayout = "E-m:e-i64:64-n32:64"
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target triple = "ppc64"
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; Verify that live-debug-variables includes the stack slot offset
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; for the sub-register in the debug expression for `spilled'.
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; This reproducer was generated from the following C file:
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;
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; extern int foo(void);
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; extern void bar(int);
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;
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; int main() {
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; int spilled = foo();
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;
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; // Clobber all GPRs.
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; __asm volatile ("" : : : "0", "1", "2", "3", "4", "5", "6", "7",
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; "8", "9", "10", "11", "12", "13", "14", "15",
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; "16", "17", "18", "19", "20", "21", "22", "23",
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; "24", "25", "26", "27", "28", "29", "30", "31");
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;
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; for(;;)
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; bar(spilled);
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;
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; return 0;
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; }
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;
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; compiled using:
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;
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; clang --target=ppc64 -O3 -g -S -emit-llvm
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; CHECK: ![[VAR:.*]] = !DILocalVariable(name: "spilled"
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; CHECK: STD $x3, 0, %stack.0
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; CHECK-NEXT: DBG_VALUE %stack.0, 0, ![[VAR]], !DIExpression(DW_OP_plus_uconst, 4)
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; Function Attrs: noreturn nounwind
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define signext i32 @main() local_unnamed_addr #0 !dbg !8 {
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entry:
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%call = tail call signext i32 @foo() #2, !dbg !14
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call void @llvm.dbg.value(metadata i32 %call, metadata !13, metadata !DIExpression()), !dbg !14
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tail call void asm sideeffect "", "~{r0},~{r1},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15},~{r16},~{r17},~{r18},~{r19},~{r20},~{r21},~{r22},~{r23},~{r24},~{r25},~{r26},~{r27},~{r28},~{r29},~{r30},~{r31}"() #2, !dbg !14, !srcloc !15
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br label %for.cond, !dbg !14
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for.cond: ; preds = %for.cond, %entry
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tail call void @bar(i32 signext %call) #2, !dbg !14
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br label %for.cond, !dbg !14
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}
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declare signext i32 @foo() local_unnamed_addr
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declare void @bar(i32 signext) local_unnamed_addr
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.value(metadata, metadata, metadata) #1
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attributes #0 = { noreturn nounwind }
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attributes #1 = { nounwind readnone speculatable }
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attributes #2 = { nounwind }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5, !6}
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!llvm.ident = !{!7}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 8.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
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!1 = !DIFile(filename: "live-debug-vars-subreg-offset.c", directory: "/")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"wchar_size", i32 4}
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!6 = !{i32 7, !"PIC Level", i32 2}
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!7 = !{!"clang version 8.0.0"}
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!8 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 4, type: !9, isLocal: false, isDefinition: true, scopeLine: 4, isOptimized: true, unit: !0, retainedNodes: !12)
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!9 = !DISubroutineType(types: !10)
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!10 = !{!11}
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!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!12 = !{!13}
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!13 = !DILocalVariable(name: "spilled", scope: !8, file: !1, line: 5, type: !11)
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!14 = !DILocation(line: 5, column: 17, scope: !8)
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!15 = !{i32 125}
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