# RUN: llc -emit-call-site-info -mtriple=arm-linux-gnu -debug-entry-values -run-pass if-converter %s -o -| FileCheck %s
# Vefify that the call site info will be updated after the optimization.
# This test case would previously trigger an assertion when
# deleting the call instruction.
# Test case is generated from:
# extern void
# foo (int* seg, int subseg);
# extern int* mri_common_symbol;
#
# void
# baa (int* secptr, int subseg)
# {
# if (! (secptr == 0 && subseg == 0))
# foo (secptr, subseg);
# mri_common_symbol = 0;
# }
#
# With slight change of MIR - substitution of BL instruction with BL_pred
# in order to trigger optimization.
# clang -target arm-linux-gnu -g -O2 -Xclang -femit-debug-entry-values
# %s -stop-before=if-convert
#
# CHECK: callSites:
# CHECK-NEXT: - { bb: {{.*}}, offset: {{.*}}, fwdArgRegs:
# CHECK-NEXT: - { arg: 0, reg: '$r0' }
# CHECK-NEXT: - { arg: 1, reg: '$r1' } }
--- |
; ModuleID = 'if-convert-call-site-info.c'
source_filename = "if-convert-call-site-info.c"
target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64"
target triple = "armv6kz-unknown-linux-gnueabihf"
@mri_common_symbol = external dso_local local_unnamed_addr global i32*, align 4
; Function Attrs: nounwind
define dso_local void @baa(i32* %secptr, i32 %subseg) local_unnamed_addr #0 !dbg !14 {
entry:
call void @llvm.dbg.value(metadata i32* %secptr, metadata !16, metadata !DIExpression()), !dbg !18
call void @llvm.dbg.value(metadata i32 %subseg, metadata !17, metadata !DIExpression()), !dbg !18
%cmp = icmp eq i32* %secptr, null, !dbg !19
%cmp1 = icmp eq i32 %subseg, 0, !dbg !21
%or.cond = and i1 %cmp, %cmp1, !dbg !22
br i1 %or.cond, label %if.end, label %if.then, !dbg !22
if.then: ; preds = %entry
tail call void @foo(i32* %secptr, i32 %subseg), !dbg !23
br label %if.end, !dbg !23
if.end: ; preds = %entry, %if.then
store i32* null, i32** @mri_common_symbol, align 4, !dbg !24, !tbaa !25
ret void, !dbg !29
}
declare !dbg !4 dso_local void @foo(i32*, i32) local_unnamed_addr
; Function Attrs: nounwind readnone speculatable willreturn
declare void @llvm.dbg.value(metadata, metadata, metadata)
; Function Attrs: nounwind
declare void @llvm.stackprotector(i8*, i8**)
attributes #0 = { "frame-pointer"="all" }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!9, !10, !11, !12}
!llvm.ident = !{!13}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 10.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, nameTableKind: None)
!1 = !DIFile(filename: "if-convert-call-site-info.c", directory: "/")
!2 = !{}
!3 = !{!4}
!4 = !DISubprogram(name: "foo", scope: !1, file: !1, line: 10, type: !5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
!5 = !DISubroutineType(types: !6)
!6 = !{null, !7, !8}
!7 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !8, size: 32)
!8 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!9 = !{i32 2, !"Dwarf Version", i32 4}
!10 = !{i32 2, !"Debug Info Version", i32 3}
!11 = !{i32 1, !"wchar_size", i32 4}
!12 = !{i32 1, !"min_enum_size", i32 4}
!13 = !{!"clang version 10.0.0 "}
!14 = distinct !DISubprogram(name: "baa", scope: !1, file: !1, line: 14, type: !5, scopeLine: 15, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !15)
!15 = !{!16, !17}
!16 = !DILocalVariable(name: "secptr", arg: 1, scope: !14, file: !1, line: 14, type: !7)
!17 = !DILocalVariable(name: "subseg", arg: 2, scope: !14, file: !1, line: 14, type: !8)
!18 = !DILocation(line: 0, scope: !14)
!19 = !DILocation(line: 16, column: 17, scope: !20)
!20 = distinct !DILexicalBlock(scope: !14, file: !1, line: 16, column: 7)
!21 = !DILocation(line: 16, column: 32, scope: !20)
!22 = !DILocation(line: 16, column: 22, scope: !20)
!23 = !DILocation(line: 17, column: 5, scope: !20)
!24 = !DILocation(line: 18, column: 21, scope: !14)
!25 = !{!26, !26, i64 0}
!26 = !{!"any pointer", !27, i64 0}
!27 = !{!"omnipotent char", !28, i64 0}
!28 = !{!"Simple C/C++ TBAA"}
!29 = !DILocation(line: 19, column: 1, scope: !14)
...
---
name: baa
alignment: 2
tracksRegLiveness: true
liveins:
- { reg: '$r0' }
- { reg: '$r1' }
frameInfo:
stackSize: 8
maxAlignment: 4
adjustsStack: true
hasCalls: true
maxCallFrameSize: 0
stack:
- { id: 0, type: spill-slot, offset: -4, size: 4, alignment: 4, callee-saved-register: '$lr',
callee-saved-restored: false }
- { id: 1, type: spill-slot, offset: -8, size: 4, alignment: 4, callee-saved-register: '$r11' }
callSites:
- { bb: 2, offset: 0, fwdArgRegs:
- { arg: 0, reg: '$r0' }
- { arg: 1, reg: '$r1' } }
constants:
- id: 0
value: 'i32** null'
alignment: 4
machineFunctionInfo: {}
body: |
bb.0.entry:
successors: %bb.1(0x60000000), %bb.2(0x20000000)
liveins: $r0, $r1, $lr
DBG_VALUE $r0, $noreg, !16, !DIExpression(), debug-location !18
DBG_VALUE $r0, $noreg, !16, !DIExpression(), debug-location !18
DBG_VALUE $r1, $noreg, !17, !DIExpression(), debug-location !18
DBG_VALUE $r1, $noreg, !17, !DIExpression(), debug-location !18
$sp = frame-setup STMDB_UPD $sp, 14, $noreg, killed $r11, killed $lr
frame-setup CFI_INSTRUCTION def_cfa_offset 8
frame-setup CFI_INSTRUCTION offset $lr, -4
frame-setup CFI_INSTRUCTION offset $r11, -8
$r11 = frame-setup MOVr killed $sp, 14, $noreg, $noreg
frame-setup CFI_INSTRUCTION def_cfa_register $r11
CMPri renamable $r0, 0, 14, $noreg, implicit-def $cpsr, debug-location !22
Bcc %bb.2, 1, killed $cpsr, debug-location !22
bb.1.entry:
successors: %bb.3(0x55555555), %bb.2(0x2aaaaaab)
liveins: $r0, $r1
CMPri renamable $r1, 0, 14, $noreg, implicit-def $cpsr, debug-location !22
Bcc %bb.3, 0, killed $cpsr, debug-location !22
bb.2.if.then:
liveins: $r0, $r1
BL_pred @foo, 14, $noreg, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit $r0, implicit $r1, implicit-def $sp, debug-location !23
bb.3.if.end:
renamable $r0 = LDRi12 %const.0, 0, 14, $noreg, debug-location !24 :: (load (s32) from constant-pool)
renamable $r1 = MOVi 0, 14, $noreg, $noreg
STRi12 killed renamable $r1, killed renamable $r0, 0, 14, $noreg, debug-location !24 :: (store (s32) into @mri_common_symbol, !tbaa !25)
$sp = LDMIA_RET $sp, 14, $noreg, def $r11, def $pc, debug-location !29
...