# RUN: llc -mtriple=x86_64-unknown-unknown -mcpu=btver2 -run-pass=post-RA-sched -o - %s | FileCheck %s
# RUN: llc -mtriple=x86_64-unknown-unknown -mcpu=btver2 -run-pass=post-RA-sched -o - %s -experimental-debug-variable-locations| FileCheck %s
# Test that multiple DBG_VALUE's and DBG_PHIs following an instruction whose
# register needs # to be changed during the post-RA scheduler pass are updated
# correctly.
# Test case was derived from the output from the following command and
# the source code below. DBG_PHIs added manually later:
#
# clang -S -emit-llvm -target x86_64 -march=btver2 -O2 -g -o - <srcfile> |
# llc -stop-before=post-RA-sched -o -
#
# Source code reduced from the original 8MB source file:
#
# struct a;
# class b {
# public:
# a *c = ap;
# unsigned *d() { return (unsigned *)c; }
# a *ap;
# };
# enum { e = 2 };
# template <typename f> f *g(f *h, f *i) {
# long j = long(i), k = -!h;
# return reinterpret_cast<f *>(long(h) | k & j);
# }
# class l {
# public:
# l(int);
# int m;
# };
# unsigned *n;
# unsigned o;
# class p {
# public:
# int aa();
# unsigned *q() {
# n = r.d();
# return g(n, &o);
# }
# b r;
# };
# class s : l {
# public:
# p t;
# s(int h) : l(h), ab(t), ac(~0 << h) { ae(); }
# p &ab;
# int ac;
# void ae() {
# const unsigned *v;
# const unsigned u = 0;
# v = ab.q();
# const unsigned *x = g(v, &u);
# int w = x[m] & ac;
# while (w) {
# int z = (ab.aa() - 1) / e;
# if (m <= z)
# return;
# }
# }
# };
# class ad {
# public:
# ~ad() {
# for (y();;)
# ;
# }
# class y {
# public:
# y() : af(0) {}
# s af;
# };
# };
# class ag {
# ad ah;
# };
# enum ai {};
# class aj {
# public:
# aj(unsigned(ai));
# ag ak;
# };
# struct al {
# static unsigned am(ai);
# };
# template <int> struct an : al { static aj ao; };
# template <> aj an<0>::ao(am);
--- |
%class.s = type <{ %class.l, [4 x i8], %class.p, ptr, i32, [4 x i8] }>
%class.l = type { i32 }
%class.p = type { %class.b }
%class.b = type { ptr, ptr }
%struct.a = type opaque
@n = local_unnamed_addr global ptr null, align 8
@o = global i32 0, align 4
define linkonce_odr void @_ZN1sC2Ei(ptr, i32) unnamed_addr #0 align 2 !dbg !4 {
%3 = alloca i32, align 4
%4 = bitcast ptr %0 to ptr
tail call void @_ZN1lC2Ei(ptr %4, i32 %1)
%5 = getelementptr inbounds %class.s, ptr %0, i64 0, i32 2
tail call void @llvm.dbg.value(metadata ptr %5, i64 0, metadata !10, metadata !17), !dbg !18
tail call void @llvm.dbg.value(metadata ptr %5, i64 0, metadata !20, metadata !17), !dbg !27
%6 = getelementptr inbounds %class.s, ptr %0, i64 0, i32 2, i32 0, i32 1
%7 = bitcast ptr %6 to ptr
%8 = load i64, ptr %7, align 8
%9 = bitcast ptr %5 to ptr
store i64 %8, ptr %9, align 8
%10 = getelementptr inbounds %class.s, ptr %0, i64 0, i32 3
store ptr %5, ptr %10, align 8
%11 = getelementptr inbounds %class.s, ptr %0, i64 0, i32 4
%12 = shl i32 -1, %1
store i32 %12, ptr %11, align 8
store i32 0, ptr %3, align 4
%13 = bitcast ptr %5 to ptr
%14 = load ptr, ptr %13, align 8
store ptr %14, ptr @n, align 8
%15 = icmp eq ptr %14, null
%16 = ptrtoint ptr %14 to i64
%17 = select i1 %15, i64 ptrtoint (ptr @o to i64), i64 0
%18 = or i64 %17, %16
tail call void @llvm.dbg.value(metadata ptr %3, i64 0, metadata !29, metadata !35), !dbg !36
tail call void @llvm.dbg.value(metadata ptr %3, i64 0, metadata !39, metadata !17), !dbg !44
%19 = ptrtoint ptr %3 to i64
call void @llvm.dbg.value(metadata i64 %19, i64 0, metadata !46, metadata !17), !dbg !48
%20 = icmp eq i64 %18, 0
%21 = select i1 %20, i64 %19, i64 0
%22 = or i64 %21, %18
%23 = inttoptr i64 %22 to ptr
%24 = bitcast ptr %0 to ptr
%25 = load i32, ptr %24, align 8
%26 = sext i32 %25 to i64
%27 = getelementptr inbounds i32, ptr %23, i64 %26
%28 = load i32, ptr %27, align 4
%29 = and i32 %12, %28
%30 = icmp eq i32 %29, 0
br i1 %30, label %47, label %31
; <label>:31: ; preds = %2
%32 = bitcast ptr %0 to ptr
%33 = call i32 @_ZN1p2aaEv(ptr %5)
%34 = add nsw i32 %33, -1
%35 = sdiv i32 %34, 2
%36 = load i32, ptr %32, align 8
%37 = icmp sgt i32 %36, %35
br i1 %37, label %38, label %47
; <label>:38: ; preds = %31
br label %39
; <label>:39: ; preds = %39, %38
%40 = bitcast ptr %0 to ptr
%sunkaddr = ptrtoint ptr %0 to i64
%sunkaddr1 = add i64 %sunkaddr, 24
%sunkaddr2 = inttoptr i64 %sunkaddr1 to ptr
%41 = load ptr, ptr %sunkaddr2, align 8
%42 = call i32 @_ZN1p2aaEv(ptr %41)
%43 = add nsw i32 %42, -1
%44 = sdiv i32 %43, 2
%45 = load i32, ptr %40, align 8
%46 = icmp sgt i32 %45, %44
br i1 %46, label %39, label %47
; <label>:47: ; preds = %39, %31, %2
ret void
}
declare void @_ZN1lC2Ei(ptr, i32) unnamed_addr #1
declare i32 @_ZN1p2aaEv(ptr) local_unnamed_addr #1
; Function Attrs: nounwind readnone
declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!2, !3}
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug)
!1 = !DIFile(filename: "test.cpp", directory: "")
!2 = !{i32 2, !"Dwarf Version", i32 4}
!3 = !{i32 2, !"Debug Info Version", i32 3}
!4 = distinct !DISubprogram(name: "s", linkageName: "_ZN1sC2Ei", scope: !5, file: !1, line: 32, type: !6, isLocal: false, isDefinition: true, scopeLine: 32, flags: DIFlagPrototyped, isOptimized: true, unit: !0)
!5 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "s", file: !1, line: 29, size: 320, identifier: "_ZTS1s")
!6 = !DISubroutineType(types: !7)
!7 = !{null, !8, !9}
!8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!10 = !DILocalVariable(name: "this", arg: 1, scope: !11, type: !16, flags: DIFlagArtificial | DIFlagObjectPointer)
!11 = distinct !DISubprogram(name: "p", linkageName: "_ZN1pC2Ev", scope: !12, file: !1, line: 20, type: !13, isLocal: false, isDefinition: true, scopeLine: 20, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: true, unit: !0)
!12 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "p", file: !1, line: 20, size: 128, identifier: "_ZTS1p")
!13 = !DISubroutineType(types: !14)
!14 = !{null, !15}
!15 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
!16 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64)
!17 = !DIExpression()
!18 = !DILocation(line: 0, scope: !11, inlinedAt: !19)
!19 = distinct !DILocation(line: 32, column: 3, scope: !4)
!20 = !DILocalVariable(name: "this", arg: 1, scope: !21, type: !26, flags: DIFlagArtificial | DIFlagObjectPointer)
!21 = distinct !DISubprogram(name: "b", linkageName: "_ZN1bC2Ev", scope: !22, file: !1, line: 2, type: !23, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: true, unit: !0)
!22 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "b", file: !1, line: 2, size: 128, identifier: "_ZTS1b")
!23 = !DISubroutineType(types: !24)
!24 = !{null, !25}
!25 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !22, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
!26 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !22, size: 64)
!27 = !DILocation(line: 0, scope: !21, inlinedAt: !28)
!28 = distinct !DILocation(line: 20, column: 7, scope: !11, inlinedAt: !19)
!29 = !DILocalVariable(name: "u", scope: !30, file: !1, line: 37, type: !33)
!30 = distinct !DISubprogram(name: "ae", linkageName: "_ZN1s2aeEv", scope: !5, file: !1, line: 35, type: !31, isLocal: false, isDefinition: true, scopeLine: 35, flags: DIFlagPrototyped, isOptimized: true, unit: !0)
!31 = !DISubroutineType(types: !32)
!32 = !{null, !8}
!33 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !34)
!34 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)
!35 = !DIExpression(DW_OP_deref)
!36 = !DILocation(line: 37, column: 20, scope: !30, inlinedAt: !37)
!37 = distinct !DILocation(line: 32, column: 41, scope: !38)
!38 = distinct !DILexicalBlock(scope: !4, file: !1, line: 32, column: 39)
!39 = !DILocalVariable(name: "i", arg: 2, scope: !40, file: !1, line: 9, type: !43)
!40 = distinct !DISubprogram(name: "g<const unsigned int>", linkageName: "_Z1gIKjEPT_S2_S2_", scope: !1, file: !1, line: 9, type: !41, isLocal: false, isDefinition: true, scopeLine: 9, flags: DIFlagPrototyped, isOptimized: true, unit: !0)
!41 = !DISubroutineType(types: !42)
!42 = !{!43, !43, !43}
!43 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !33, size: 64)
!44 = !DILocation(line: 9, column: 37, scope: !40, inlinedAt: !45)
!45 = distinct !DILocation(line: 39, column: 25, scope: !30, inlinedAt: !37)
!46 = !DILocalVariable(name: "j", scope: !40, file: !1, line: 10, type: !47)
!47 = !DIBasicType(name: "long int", size: 64, encoding: DW_ATE_signed)
!48 = !DILocation(line: 10, column: 8, scope: !40, inlinedAt: !45)
# CHECK: ![[I_VAR:[0-9]+]] = !DILocalVariable(name: "i", {{.*}}line: 9, {{.*}})
# CHECK: ![[I_LOC:[0-9]+]] = !DILocation(line: 9, column: 37, {{.*}})
# CHECK: ![[J_VAR:[0-9]+]] = !DILocalVariable(name: "j", {{.*}}line: 10, {{.*}})
# CHECK: ![[J_LOC:[0-9]+]] = !DILocation(line: 10, column: 8, {{.*}})
...
---
name: _ZN1sC2Ei
tracksRegLiveness: true
liveins:
- { reg: '$rdi' }
- { reg: '$esi' }
fixedStack:
- { id: 0, type: spill-slot, offset: -32, size: 8, alignment: 16, callee-saved-register: '$rbx' }
- { id: 1, type: spill-slot, offset: -24, size: 8, alignment: 8, callee-saved-register: '$r14' }
- { id: 2, type: spill-slot, offset: -16, size: 8, alignment: 16 }
stack:
- { id: 0, offset: -36, size: 4, alignment: 4 }
body: |
bb.0:
successors: %bb.3, %bb.2
liveins: $esi, $rdi, $r14, $rbx, $rbp
; CHECK: [[REGISTER:\$r[a-z0-9]+]] = LEA64r {{\$r[a-z0-9]+}}, 1, $noreg, -20, $noreg
; CHECK-NEXT: DBG_VALUE [[REGISTER]], $noreg, ![[J_VAR]], !DIExpression(), debug-location ![[J_LOC]]
; CHECK-NEXT: DBG_VALUE [[REGISTER]], $noreg, ![[I_VAR]], !DIExpression(), debug-location ![[I_LOC]]
; CHECK-NEXT: DBG_PHI [[REGISTER]], 0
; CHECK-NEXT: DBG_PHI [[REGISTER]], 1
frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp
CFI_INSTRUCTION def_cfa_offset 16
CFI_INSTRUCTION offset $rbp, -16
$rbp = frame-setup MOV64rr $rsp
CFI_INSTRUCTION def_cfa_register $rbp
frame-setup PUSH64r killed $r14, implicit-def $rsp, implicit $rsp
frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp
$rsp = frame-setup SUB64ri8 $rsp, 16, implicit-def dead $eflags
CFI_INSTRUCTION offset $rbx, -32
CFI_INSTRUCTION offset $r14, -24
$r14d = MOV32rr $esi
$rbx = MOV64rr $rdi
CALL64pcrel32 @_ZN1lC2Ei, csr_64, implicit $rsp, implicit $rdi, implicit $esi, implicit-def $rsp
$rdi = LEA64r $rbx, 1, $noreg, 8, $noreg
DBG_VALUE $rdi, $noreg, !20, !17, debug-location !27
DBG_VALUE $rdi, $noreg, !10, !17, debug-location !18
$rax = MOV64rm $rbx, 1, $noreg, 16, $noreg :: (load (s64))
MOV64mr $rbx, 1, $noreg, 8, $noreg, killed $rax :: (store (s64))
MOV64mr $rbx, 1, $noreg, 24, $noreg, $rdi :: (store (s64))
$eax = MOV32ri -1
$cl = MOV8rr $r14b, implicit killed $r14d
$eax = SHL32rCL killed $eax, implicit-def dead $eflags, implicit $cl
MOV32mr $rbx, 1, $noreg, 32, $noreg, $eax :: (store (s32), align 8)
MOV32mi $rbp, 1, $noreg, -20, $noreg, 0 :: (store (s32))
$rcx = MOV64rm $rbx, 1, $noreg, 8, $noreg :: (load (s64))
MOV64mr $rip, 1, $noreg, @n, $noreg, $rcx :: (store (s64))
$edx = XOR32rr undef $edx, undef $edx, implicit-def dead $eflags, implicit-def $rdx
TEST64rr $rcx, $rcx, implicit-def $eflags
$esi = MOV32ri @o, implicit-def $rsi
$rsi = CMOV64rr killed $rsi, $rdx, 5, implicit killed $eflags
$rsi = OR64rr killed $rsi, killed $rcx, implicit-def $eflags
$rcx = LEA64r $rbp, 1, $noreg, -20, $noreg
DBG_VALUE $rcx, $noreg, !46, !17, debug-location !48
DBG_VALUE $rcx, $noreg, !39, !17, debug-location !44
DBG_PHI $rcx, 0
DBG_PHI $rcx, 1
DBG_VALUE $rbp, -20, !29, !17, debug-location !36
$rcx = CMOV64rr killed $rcx, killed $rdx, 5, implicit killed $eflags
$rcx = OR64rr killed $rcx, killed $rsi, implicit-def dead $eflags
$rdx = MOVSX64rm32 $rbx, 1, $noreg, 0, $noreg :: (load (s32), align 8)
DBG_INSTR_REF !46, !17, dbg-instr-ref(1, 0), debug-location !48
DBG_INSTR_REF !39, !17, dbg-instr-ref(2, 0), debug-location !44
TEST32mr killed $rcx, 4, killed $rdx, 0, $noreg, killed $eax, implicit-def $eflags :: (load (s32))
JCC_1 %bb.2, 5, implicit $eflags
JMP_1 %bb.3
bb.1:
successors: %bb.2
liveins: $rbx, $rbp
$rdi = MOV64rm $rbx, 1, $noreg, 24, $noreg :: (load (s64))
bb.2:
successors: %bb.1, %bb.3
liveins: $rbx, $rbp, $rsp, $rdi
CALL64pcrel32 @_ZN1p2aaEv, csr_64, implicit $rsp, implicit $rdi, implicit-def $rsp, implicit-def $eax
$eax = KILL $eax, implicit-def $rax
$ecx = LEA64_32r $rax, 1, $noreg, -1, $noreg, implicit-def $rcx
$ecx = SHR32ri $ecx, 31, implicit-def dead $eflags, implicit killed $rcx, implicit-def $rcx
$eax = LEA64_32r killed $rax, 1, killed $rcx, -1, $noreg
$eax = SAR32r1 killed $eax, implicit-def dead $eflags
CMP32mr $rbx, 1, $noreg, 0, $noreg, killed $eax, implicit-def $eflags :: (load (s32), align 8), (load (s32), align 8)
JCC_1 %bb.1, 15, implicit killed $eflags
bb.3:
liveins: $rbp
$rsp = ADD64ri8 $rsp, 16, implicit-def dead $eflags
$rbx = POP64r implicit-def $rsp, implicit $rsp
$r14 = POP64r implicit-def $rsp, implicit $rsp
$rbp = POP64r implicit-def $rsp, implicit $rsp
RET64
...
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