# RUN: llc -run-pass=livedebugvalues %s -o - | FileCheck %s
#
# This test tests tracking variables value transferring from one register to another.
# This example is altered additionally in order to test transferring from one float register
# to another. The altered instructions are labeled below.
#
# CHECK: ![[ARG1:.*]] = !DILocalVariable(name: "arg1"
# CHECK: ![[ARG2:.*]] = !DILocalVariable(name: "arg2"
# CHECK: DBG_VALUE $s0_64, $noreg, ![[ARG2]], !DIExpression(), debug-location
# CHECK: $s1_64 = OR64 killed $s0_64, $zero_64, debug-location
# CHECK-NEXT: DBG_VALUE $s1_64, $noreg, ![[ARG2]], !DIExpression(), debug-location
# CHECK: DBG_VALUE $f24, $noreg, ![[ARG1]], !DIExpression(), debug-location
# CHECK: $f26 = FMOV_S killed $f24, debug-location
# CHECK-NEXT: DBG_VALUE $f26, $noreg, ![[ARG1]], !DIExpression(), debug-location
--- |
; ModuleID = 'live-debug-values-reg-copy.ll'
source_filename = "live-debug-values-reg-copy.c"
target datalayout = "E-m:e-i8:8:32-i16:16:32-i64:64-n32:64-S128"
target triple = "mips64-octeon-linux"
define float @foo(float %arg1, i32 signext %arg2) local_unnamed_addr !dbg !8 {
entry:
call void @llvm.dbg.value(metadata float %arg1, metadata !14, metadata !DIExpression()), !dbg !19
call void @llvm.dbg.value(metadata i32 %arg2, metadata !15, metadata !DIExpression()), !dbg !19
%conv = fpext float %arg1 to double, !dbg !19
%cmp = fcmp ogt double %conv, 1.012310e+01, !dbg !19
br i1 %cmp, label %if.then, label %if.else, !dbg !19
if.then: ; preds = %entry
%call = tail call float @externFunc(float %arg1), !dbg !19
%call5 = tail call i32 @externFunc3(i32 signext %arg2), !dbg !19
%conv6 = sitofp i32 %call5 to float, !dbg !19
%add7 = fadd float %conv6, 0x3FF522D0E0000000, !dbg !19
br label %if.end, !dbg !19
if.else: ; preds = %entry
%add8 = fadd float %arg1, 1.000000e+01, !dbg !19
call void @llvm.dbg.value(metadata float %add8, metadata !14, metadata !DIExpression()), !dbg !19
%call9 = tail call float @externFunc2(float %add8), !dbg !19
%call10 = tail call i32 @externFunc4(i32 signext %arg2), !dbg !19
%conv11 = sitofp i32 %call10 to float, !dbg !19
%add12 = fadd float %call9, %conv11, !dbg !19
%call14 = tail call float @externFunc(float %add8), !dbg !19
br label %if.end
if.end: ; preds = %if.else, %if.then
%local.0 = phi float [ %add7, %if.then ], [ %add12, %if.else ]
ret float %local.0, !dbg !19
}
declare float @externFunc(float) local_unnamed_addr
declare i32 @externFunc3(i32 signext) local_unnamed_addr
declare float @externFunc2(float) local_unnamed_addr
declare i32 @externFunc4(i32 signext) local_unnamed_addr
; Function Attrs: nounwind readnone speculatable
declare void @llvm.dbg.value(metadata, metadata, metadata) #0
; Function Attrs: nounwind
declare void @llvm.stackprotector(i8*, i8**) #1
attributes #0 = { nounwind readnone speculatable }
attributes #1 = { nounwind }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4, !5, !6}
!llvm.ident = !{!7}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 7.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
!1 = !DIFile(filename: "live-debug-values-reg-copy.c", directory: "/")
!2 = !{}
!3 = !{i32 2, !"Dwarf Version", i32 4}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!5 = !{i32 1, !"wchar_size", i32 4}
!6 = !{i32 7, !"PIC Level", i32 2}
!7 = !{!"clang version 7.0.0 "}
!8 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 6, type: !9, isLocal: false, isDefinition: true, scopeLine: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !13)
!9 = !DISubroutineType(types: !10)
!10 = !{!11, !11, !12}
!11 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float)
!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!13 = !{!14, !15}
!14 = !DILocalVariable(name: "arg1", arg: 1, scope: !8, file: !1, line: 6, type: !11)
!15 = !DILocalVariable(name: "arg2", arg: 2, scope: !8, file: !1, line: 6, type: !12)
!19 = !DILocation(line: 6, column: 17, scope: !8)
...
---
name: foo
alignment: 8
exposesReturnsTwice: false
legalized: false
regBankSelected: false
selected: false
tracksRegLiveness: false
registers:
liveins:
- { reg: '$f12', virtual-reg: '' }
- { reg: '$a1_64', virtual-reg: '' }
frameInfo:
isFrameAddressTaken: false
isReturnAddressTaken: false
hasStackMap: false
hasPatchPoint: false
stackSize: 48
offsetAdjustment: 0
maxAlignment: 8
adjustsStack: true
hasCalls: true
stackProtector: ''
maxCallFrameSize: 0
cvBytesOfCalleeSavedRegisters: 0
hasOpaqueSPAdjustment: false
hasVAStart: false
hasMustTailInVarArgFunc: false
localFrameSize: 0
savePoint: ''
restorePoint: ''
fixedStack: []
stack:
- { id: 0, name: '', type: spill-slot, offset: -8, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '$d26_64', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 1, name: '', type: spill-slot, offset: -16, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '$d25_64', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 2, name: '', type: spill-slot, offset: -24, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '$d24_64', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 3, name: '', type: spill-slot, offset: -32, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '$ra_64', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 4, name: '', type: spill-slot, offset: -40, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '$s1_64', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 5, name: '', type: spill-slot, offset: -48, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '$s0_64', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
callSites: []
constants:
- id: 0
value: 'double 1.012310e+01'
alignment: 8
isTargetSpecific: false
- id: 1
value: 'float 1.000000e+01'
alignment: 4
isTargetSpecific: false
- id: 2
value: float 0x3FF522D0E0000000
alignment: 4
isTargetSpecific: false
body: |
bb.0.entry:
successors: %bb.1(0x40000000), %bb.2(0x40000000)
liveins: $f12, $a1_64, $s1_64, $f26, $d26_64, $d25_64, $d24_64, $ra_64, $s1_64, $s0_64
DBG_VALUE $f12, $noreg, !14, !DIExpression(), debug-location !19
DBG_VALUE $a1_64, $noreg, !15, !DIExpression(), debug-location !19
$sp_64 = DADDiu $sp_64, -48
CFI_INSTRUCTION def_cfa_offset 48
SDC164 killed $d26_64, $sp_64, 40 :: (store (s64) into %stack.0)
SDC164 killed $d25_64, $sp_64, 32 :: (store (s64) into %stack.1)
SDC164 killed $d24_64, $sp_64, 24 :: (store (s64) into %stack.2)
SD killed $ra_64, $sp_64, 16 :: (store (s64) into %stack.3)
SD killed $s1_64, $sp_64, 8 :: (store (s64) into %stack.4)
SD killed $s0_64, $sp_64, 0 :: (store (s64) into %stack.5)
CFI_INSTRUCTION offset $d27_64, -8
CFI_INSTRUCTION offset $d26_64, -4
CFI_INSTRUCTION offset $d26_64, -16
CFI_INSTRUCTION offset $d25_64, -12
CFI_INSTRUCTION offset $d25_64, -24
CFI_INSTRUCTION offset $d24_64, -20
CFI_INSTRUCTION offset $ra_64, -32
CFI_INSTRUCTION offset $s1_64, -40
CFI_INSTRUCTION offset $s0_64, -48
renamable $s0_64 = COPY $a1_64
DBG_VALUE $s0, $noreg, !15, !DIExpression(), debug-location !19
DBG_VALUE $s0_64, $noreg, !15, !DIExpression(), debug-location !19
DBG_VALUE $f12, $noreg, !14, !DIExpression(), debug-location !19
renamable $d0_64 = CVT_D64_S renamable $f12, debug-location !19
renamable $at_64 = LUi64 target-flags(mips-highest) %const.0
renamable $at_64 = DADDiu killed renamable $at_64, target-flags(mips-higher) %const.0
renamable $at_64 = DSLL killed renamable $at_64, 16
renamable $at_64 = DADDiu killed renamable $at_64, target-flags(mips-abs-hi) %const.0
renamable $at_64 = DSLL killed renamable $at_64, 16
renamable $d1_64 = LDC164 killed renamable $at_64, target-flags(mips-abs-lo) %const.0 :: (load (s64) from constant-pool)
FCMP_D64 killed renamable $d0_64, killed renamable $d1_64, 7, implicit-def $fcc0, debug-location !19
BC1T killed $fcc0, %bb.2, implicit-def dead $at, debug-location !19
J %bb.1, implicit-def dead $at, debug-location !19
bb.1.if.then:
successors: %bb.3(0x80000000)
liveins: $f12, $s0_64
JAL @externFunc, csr_n64, implicit-def dead $ra, implicit $f12, implicit-def $sp, implicit-def dead $f0, debug-location !19
renamable $a0_64 = SLL64_32 renamable $s0, implicit $s0_64, debug-location !19
JAL @externFunc3, csr_n64, implicit-def dead $ra, implicit $a0_64, implicit-def $sp, implicit-def $v0, debug-location !19
renamable $f0 = PseudoCVT_S_W killed renamable $v0, debug-location !19
; This instruction is inserted additionally in order to test moving from one register to another
$s1_64 = OR64 killed $s0_64, $zero_64, debug-location !19
renamable $at_64 = LUi64 target-flags(mips-highest) %const.2
renamable $at_64 = DADDiu killed renamable $at_64, target-flags(mips-higher) %const.2
renamable $at_64 = DSLL killed renamable $at_64, 16
renamable $at_64 = DADDiu killed renamable $at_64, target-flags(mips-abs-hi) %const.2
renamable $at_64 = DSLL killed renamable $at_64, 16
renamable $f1 = LWC1 killed renamable $at_64, target-flags(mips-abs-lo) %const.2 :: (load (s32) from constant-pool)
renamable $f0 = FADD_S killed renamable $f0, killed renamable $f1, debug-location !19
J %bb.3, implicit-def dead $at, debug-location !19
bb.2.if.else:
successors: %bb.3(0x80000000)
liveins: $f12, $s0_64
renamable $at_64 = LUi64 target-flags(mips-highest) %const.1
renamable $at_64 = DADDiu killed renamable $at_64, target-flags(mips-higher) %const.1
renamable $at_64 = DSLL killed renamable $at_64, 16
renamable $at_64 = DADDiu killed renamable $at_64, target-flags(mips-abs-hi) %const.1
renamable $at_64 = DSLL killed renamable $at_64, 16
renamable $f0 = LWC1 killed renamable $at_64, target-flags(mips-abs-lo) %const.1 :: (load (s32) from constant-pool)
renamable $f24 = FADD_S killed renamable $f12, killed renamable $f0, debug-location !19
DBG_VALUE $f24, $noreg, !14, !DIExpression(), debug-location !19
$f12 = COPY renamable $f24, debug-location !19
JAL @externFunc2, csr_n64, implicit-def dead $ra, implicit $f12, implicit-def $sp, implicit-def $f0, debug-location !19
renamable $f25 = COPY $f0, debug-location !19
renamable $a0_64 = SLL64_32 renamable $s0, implicit killed $s0_64, debug-location !19
JAL @externFunc4, csr_n64, implicit-def dead $ra, implicit $a0_64, implicit-def $sp, implicit-def $v0, debug-location !19
renamable $s0 = COPY $v0, debug-location !19
$f12 = COPY renamable $f24, debug-location !19
JAL @externFunc, csr_n64, implicit-def dead $ra, implicit $f12, implicit-def $sp, implicit-def dead $f0, debug-location !19
renamable $f0 = PseudoCVT_S_W killed renamable $s0, debug-location !19
renamable $f0 = FADD_S killed renamable $f25, killed renamable $f0, debug-location !19
; This instruction is inserted additionally in order to test moving variable's value from one float register to another.
$f26 = FMOV_S killed $f24, debug-location !19
bb.3.if.end:
liveins: $f0
$s0_64 = LD $sp_64, 0, debug-location !19 :: (load (s64) from %stack.5)
$s1_64 = LD $sp_64, 8, debug-location !19 :: (load (s64) from %stack.4)
$ra_64 = LD $sp_64, 16, debug-location !19 :: (load (s64) from %stack.3)
$d24_64 = LDC164 $sp_64, 24, debug-location !19 :: (load (s64) from %stack.2)
$d25_64 = LDC164 $sp_64, 32, debug-location !19 :: (load (s64) from %stack.1)
$d26_64 = LDC164 $sp_64, 40, debug-location !19 :: (load (s64) from %stack.0)
$sp_64 = DADDiu $sp_64, 48
RetRA implicit $f0, debug-location !19
...