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clang-p2996/llvm/test/DebugInfo/MIR/X86/live-debug-values-3preds.mir
Simon Pilgrim d391e4fe84 [X86] Update RET/LRET instruction to use the same naming convention as IRET (PR36876). NFC 
Be more consistent in the naming convention for the various RET instructions to specify in terms of bitwidth.

Helps prevent future scheduler model mismatches like those that were only addressed in D44687.

Differential Revision: https://reviews.llvm.org/D113302
2021-11-07 15:06:54 +00:00

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# RUN: llc -run-pass=livedebugvalues -march=x86-64 -o - %s | FileCheck %s
# Test the extension of debug ranges from 3 predecessors.
# Generated from the source file LiveDebugValues-3preds.c:
# #include <stdio.h>
# int add(int x, int y, int z, int a) {
# int i;
# for (i = 0; i < x * y; i++) {
# if (i < x) {
# a = a * x;
# break;
# }
# if (i < y) {
# a = a * y;
# break;
# }
# if (i < z) {
# a = a * z;
# break;
# }
# }
# return a;
# }
# with clang -g -O1 -c -emit-llvm LiveDebugValues-3preds.c -S -o live-debug-values-3preds.ll
# then llc -stop-after stackmap-liveness live-debug-values-3preds.ll -o /dev/null > live-debug-values-3preds.mir
# CHECK: ![[X_VAR:[0-9]+]] = !DILocalVariable(name: "x", {{.*}})
# CHECK: ![[Y_VAR:[0-9]+]] = !DILocalVariable(name: "y", {{.*}})
# CHECK: ![[Z_VAR:[0-9]+]] = !DILocalVariable(name: "z", {{.*}})
# DBG_VALUE for variables "x", "y" and "z" are extended into %bb.9 from its
# predecessors %bb.0, %bb.2 and %bb.8.
# CHECK: bb.9.for.end:
# CHECK-DAG: DBG_VALUE $edi, $noreg, ![[X_VAR]], !DIExpression()
# CHECK-DAG: DBG_VALUE $esi, $noreg, ![[Y_VAR]], !DIExpression()
# CHECK-DAG: DBG_VALUE $edx, $noreg, ![[Z_VAR]], !DIExpression()
# CHECK: RET
--- |
; ModuleID = 'live-debug-values-3preds.ll'
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; Function Attrs: norecurse nounwind readnone uwtable
define i32 @add(i32 %x, i32 %y, i32 %z, i32 %a) #0 !dbg !4 {
entry:
tail call void @llvm.dbg.value(metadata i32 %x, i64 0, metadata !9, metadata !17), !dbg !18
tail call void @llvm.dbg.value(metadata i32 %y, i64 0, metadata !10, metadata !17), !dbg !19
tail call void @llvm.dbg.value(metadata i32 %z, i64 0, metadata !11, metadata !17), !dbg !21
tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !12, metadata !17), !dbg !23
tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !13, metadata !17), !dbg !25
%mul = mul nsw i32 %y, %x, !dbg !26
%cmp.24 = icmp sgt i32 %mul, 0, !dbg !30
br i1 %cmp.24, label %for.body.preheader, label %for.end, !dbg !31
for.body.preheader: ; preds = %entry
br label %for.body, !dbg !32
for.cond: ; preds = %if.end.6
%cmp = icmp slt i32 %inc, %mul, !dbg !30
br i1 %cmp, label %for.body, label %for.end, !dbg !31
for.body: ; preds = %for.cond, %for.body.preheader
%i.025 = phi i32 [ %inc, %for.cond ], [ 0, %for.body.preheader ]
%0 = icmp sgt i32 %x, 0
br i1 %0, label %if.then, label %if.end, !dbg !35
if.then: ; preds = %for.body
%mul2 = mul nsw i32 %a, %x, !dbg !36
tail call void @llvm.dbg.value(metadata i32 %mul2, i64 0, metadata !12, metadata !17), !dbg !23
br label %for.end, !dbg !38
if.end: ; preds = %for.body
%1 = icmp sgt i32 %y, 0
br i1 %1, label %if.then.4, label %if.end.6, !dbg !39
if.then.4: ; preds = %if.end
%mul5 = mul nsw i32 %a, %y, !dbg !40
tail call void @llvm.dbg.value(metadata i32 %mul5, i64 0, metadata !12, metadata !17), !dbg !23
br label %for.end, !dbg !43
if.end.6: ; preds = %if.end
%2 = icmp sgt i32 %z, 0
%inc = add nuw nsw i32 %i.025, 1, !dbg !44
tail call void @llvm.dbg.value(metadata i32 %inc, i64 0, metadata !13, metadata !17), !dbg !25
br i1 %2, label %if.then.8, label %for.cond, !dbg !45
if.then.8: ; preds = %if.end.6
%mul9 = mul nsw i32 %a, %z, !dbg !46
tail call void @llvm.dbg.value(metadata i32 %mul9, i64 0, metadata !12, metadata !17), !dbg !23
br label %for.end, !dbg !49
for.end: ; preds = %for.cond, %if.then.8, %if.then.4, %if.then, %entry
%a.addr.0 = phi i32 [ %mul2, %if.then ], [ %mul5, %if.then.4 ], [ %mul9, %if.then.8 ], [ %a, %entry ], [ %a, %for.cond ]
ret i32 %a.addr.0, !dbg !50
}
; Function Attrs: nounwind readnone
declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
attributes #0 = { norecurse nounwind readnone uwtable }
attributes #1 = { nounwind readnone }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!14, !15}
!llvm.ident = !{!16}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (trunk 253049) ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
!1 = !DIFile(filename: "LiveDebugValues-3preds.c", directory: "/home/vt/julia/test/tvvikram")
!2 = !{}
!4 = distinct !DISubprogram(name: "add", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !8)
!5 = !DISubroutineType(types: !6)
!6 = !{!7, !7, !7, !7, !7}
!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!8 = !{!9, !10, !11, !12, !13}
!9 = !DILocalVariable(name: "x", arg: 1, scope: !4, file: !1, line: 1, type: !7)
!10 = !DILocalVariable(name: "y", arg: 2, scope: !4, file: !1, line: 1, type: !7)
!11 = !DILocalVariable(name: "z", arg: 3, scope: !4, file: !1, line: 1, type: !7)
!12 = !DILocalVariable(name: "a", arg: 4, scope: !4, file: !1, line: 1, type: !7)
!13 = !DILocalVariable(name: "i", scope: !4, file: !1, line: 2, type: !7)
!14 = !{i32 2, !"Dwarf Version", i32 4}
!15 = !{i32 2, !"Debug Info Version", i32 3}
!16 = !{!"clang version 3.8.0 (trunk 253049) "}
!17 = !DIExpression()
!18 = !DILocation(line: 1, column: 13, scope: !4)
!19 = !DILocation(line: 1, column: 20, scope: !20)
!20 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 1)
!21 = !DILocation(line: 1, column: 27, scope: !22)
!22 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 2)
!23 = !DILocation(line: 1, column: 34, scope: !24)
!24 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 3)
!25 = !DILocation(line: 2, column: 7, scope: !20)
!26 = !DILocation(line: 3, column: 21, scope: !27)
!27 = !DILexicalBlockFile(scope: !28, file: !1, discriminator: 1)
!28 = distinct !DILexicalBlock(scope: !29, file: !1, line: 3, column: 3)
!29 = distinct !DILexicalBlock(scope: !4, file: !1, line: 3, column: 3)
!30 = !DILocation(line: 3, column: 17, scope: !27)
!31 = !DILocation(line: 3, column: 3, scope: !27)
!32 = !DILocation(line: 4, column: 11, scope: !33)
!33 = distinct !DILexicalBlock(scope: !34, file: !1, line: 4, column: 9)
!34 = distinct !DILexicalBlock(scope: !28, file: !1, line: 3, column: 31)
!35 = !DILocation(line: 4, column: 9, scope: !34)
!36 = !DILocation(line: 5, column: 13, scope: !37)
!37 = distinct !DILexicalBlock(scope: !33, file: !1, line: 4, column: 16)
!38 = !DILocation(line: 6, column: 7, scope: !37)
!39 = !DILocation(line: 8, column: 9, scope: !34)
!40 = !DILocation(line: 9, column: 13, scope: !41)
!41 = distinct !DILexicalBlock(scope: !42, file: !1, line: 8, column: 16)
!42 = distinct !DILexicalBlock(scope: !34, file: !1, line: 8, column: 9)
!43 = !DILocation(line: 10, column: 7, scope: !41)
!44 = !DILocation(line: 3, column: 27, scope: !28)
!45 = !DILocation(line: 12, column: 9, scope: !34)
!46 = !DILocation(line: 13, column: 13, scope: !47)
!47 = distinct !DILexicalBlock(scope: !48, file: !1, line: 12, column: 16)
!48 = distinct !DILexicalBlock(scope: !34, file: !1, line: 12, column: 9)
!49 = !DILocation(line: 14, column: 7, scope: !47)
!50 = !DILocation(line: 17, column: 3, scope: !4)
...
---
name: add
alignment: 16
exposesReturnsTwice: false
tracksRegLiveness: true
liveins:
- { reg: '$edi' }
- { reg: '$esi' }
- { reg: '$edx' }
- { reg: '$ecx' }
frameInfo:
isFrameAddressTaken: false
isReturnAddressTaken: false
hasStackMap: false
hasPatchPoint: false
stackSize: 0
offsetAdjustment: 0
maxAlignment: 0
adjustsStack: false
hasCalls: false
maxCallFrameSize: 0
hasOpaqueSPAdjustment: false
hasVAStart: false
hasMustTailInVarArgFunc: false
body: |
bb.0.entry:
successors: %bb.1.for.body.preheader(20), %bb.9.for.end(12)
liveins: $ecx, $edi, $edx, $esi
DBG_VALUE $edi, _, !9, !17, debug-location !18
DBG_VALUE $esi, _, !10, !17, debug-location !19
DBG_VALUE $edx, _, !11, !17, debug-location !21
DBG_VALUE $ecx, _, !12, !17, debug-location !23
DBG_VALUE 0, 0, !13, !17, debug-location !25
$r8d = MOV32rr $esi, debug-location !26
$r8d = IMUL32rr killed $r8d, $edi, implicit-def dead $eflags, debug-location !26
TEST32rr $r8d, $r8d, implicit-def $eflags, debug-location !31
JCC_1 %bb.9.for.end, 14, implicit $eflags
bb.1.for.body.preheader:
successors: %bb.3.for.body(0)
liveins: $ecx, $edi, $edx, $esi, $r8d
DBG_VALUE $edi, _, !9, !17, debug-location !18
DBG_VALUE $esi, _, !10, !17, debug-location !19
DBG_VALUE $edx, _, !11, !17, debug-location !21
DBG_VALUE $ecx, _, !12, !17, debug-location !23
DBG_VALUE 0, 0, !13, !17, debug-location !25
$eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags
bb.3.for.body (align 4):
successors: %bb.4.if.then(4), %bb.5.if.end(124)
liveins: $eax, $ecx, $edi, $edx, $esi, $r8d
DBG_VALUE $edi, _, !9, !17, debug-location !18
DBG_VALUE $esi, _, !10, !17, debug-location !19
DBG_VALUE $edx, _, !11, !17, debug-location !21
DBG_VALUE $ecx, _, !12, !17, debug-location !23
DBG_VALUE 0, 0, !13, !17, debug-location !25
TEST32rr $edi, $edi, implicit-def $eflags, debug-location !35
JCC_1 %bb.4.if.then, 15, implicit $eflags
bb.5.if.end:
successors: %bb.6.if.then.4(4), %bb.7.if.end.6(124)
liveins: $eax, $ecx, $edi, $edx, $esi, $r8d
DBG_VALUE $edi, _, !9, !17, debug-location !18
DBG_VALUE $esi, _, !10, !17, debug-location !19
DBG_VALUE $edx, _, !11, !17, debug-location !21
DBG_VALUE $ecx, _, !12, !17, debug-location !23
DBG_VALUE 0, 0, !13, !17, debug-location !25
TEST32rr $esi, $esi, implicit-def $eflags, debug-location !39
JCC_1 %bb.6.if.then.4, 15, implicit $eflags
bb.7.if.end.6:
successors: %bb.8.if.then.8(4), %bb.2.for.cond(124)
liveins: $eax, $ecx, $edi, $edx, $esi, $r8d
DBG_VALUE $edi, _, !9, !17, debug-location !18
DBG_VALUE $esi, _, !10, !17, debug-location !19
DBG_VALUE $edx, _, !11, !17, debug-location !21
DBG_VALUE $ecx, _, !12, !17, debug-location !23
DBG_VALUE 0, 0, !13, !17, debug-location !25
TEST32rr $edx, $edx, implicit-def $eflags, debug-location !45
JCC_1 %bb.8.if.then.8, 15, implicit $eflags
bb.2.for.cond:
successors: %bb.3.for.body(124), %bb.9.for.end(4)
liveins: $eax, $ecx, $edi, $edx, $esi, $r8d
DBG_VALUE $edi, _, !9, !17, debug-location !18
DBG_VALUE $esi, _, !10, !17, debug-location !19
DBG_VALUE $edx, _, !11, !17, debug-location !21
DBG_VALUE $ecx, _, !12, !17, debug-location !23
DBG_VALUE 0, 0, !13, !17, debug-location !25
$eax = INC32r killed $eax, implicit-def dead $eflags, debug-location !44
DBG_VALUE $eax, _, !13, !17, debug-location !25
CMP32rr $eax, $r8d, implicit-def $eflags, debug-location !31
JCC_1 %bb.3.for.body, 12, implicit $eflags
JMP_1 %bb.9.for.end
bb.4.if.then:
liveins: $ecx, $edi
DBG_VALUE $edi, _, !9, !17, debug-location !18
DBG_VALUE $ecx, _, !12, !17, debug-location !23
DBG_VALUE 0, 0, !13, !17, debug-location !25
$ecx = IMUL32rr killed $ecx, killed $edi, implicit-def dead $eflags, debug-location !36
DBG_VALUE 0, 0, !13, !17, debug-location !25
$eax = MOV32rr killed $ecx, debug-location !50
RET64 $eax, debug-location !50
bb.6.if.then.4:
liveins: $ecx, $esi
DBG_VALUE $esi, _, !10, !17, debug-location !19
DBG_VALUE $ecx, _, !12, !17, debug-location !23
DBG_VALUE 0, 0, !13, !17, debug-location !25
$ecx = IMUL32rr killed $ecx, killed $esi, implicit-def dead $eflags, debug-location !40
DBG_VALUE 0, 0, !13, !17, debug-location !25
$eax = MOV32rr killed $ecx, debug-location !50
RET64 $eax, debug-location !50
bb.8.if.then.8:
successors: %bb.9.for.end(0)
liveins: $ecx, $edx
DBG_VALUE $edx, _, !11, !17, debug-location !21
DBG_VALUE $ecx, _, !12, !17, debug-location !23
DBG_VALUE 0, 0, !13, !17, debug-location !25
$ecx = IMUL32rr killed $ecx, killed $edx, implicit-def dead $eflags, debug-location !46
bb.9.for.end:
liveins: $ecx
DBG_VALUE 0, 0, !13, !17, debug-location !25
$eax = MOV32rr killed $ecx, debug-location !50
RET64 $eax, debug-location !50
...
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