mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2025-02-01 13:11:39 +01:00
08fbde827c
The debug-use flag must be set exactly for uses on DBG_VALUEs. This is so obvious that it can be trivially inferred while parsing. This will reduce noise when printing while omitting an information that has little value to the user. The parser will keep recognizing the flag for compatibility with old `.mir` files. Differential Revision: https://reviews.llvm.org/D53903 llvm-svn: 345671
68 lines
2.3 KiB
YAML
68 lines
2.3 KiB
YAML
# RUN: llc -O1 -start-after simple-register-coalescing -o - %s | FileCheck %s
|
|
|
|
--- |
|
|
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
|
target triple = "x86_64-pc-linux-gnu"
|
|
|
|
define i16 @foo(i8 %zzz) !dbg !4 {
|
|
entry:
|
|
ret i16 1
|
|
}
|
|
|
|
; Function Attrs: nounwind readnone speculatable
|
|
declare void @llvm.dbg.value(metadata, metadata, metadata)
|
|
|
|
!llvm.dbg.cu = !{!0}
|
|
!llvm.module.flags = !{!3}
|
|
|
|
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2)
|
|
!1 = !DIFile(filename: "test.c", directory: "")
|
|
!2 = !{}
|
|
!3 = !{i32 1, !"Debug Info Version", i32 3}
|
|
!4 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 3, type: !5, isLocal: false, isDefinition: true, scopeLine: 3, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0)
|
|
!5 = !DISubroutineType(types: !6)
|
|
!6 = !{null}
|
|
!7 = !DILocalVariable(name: "zzz", arg: 1, scope: !4, file: !1, line: 3, type: !8)
|
|
!8 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed)
|
|
!9 = !DILocation(line: 0, scope: !4)
|
|
!10 = !DILocation(line: 4, column: 22, scope: !11)
|
|
!11 = distinct !DILexicalBlock(scope: !4, file: !1, line: 3, column: 19)
|
|
|
|
...
|
|
---
|
|
name: foo
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0:
|
|
%0:gr16_abcd = MOV16ri 1
|
|
|
|
bb.1:
|
|
DBG_VALUE %0.sub_8bit_hi, $noreg, !7, !DIExpression(), debug-location !9
|
|
%1:gr16 = COPY %0
|
|
%2:gr16 = COPY %0
|
|
|
|
bb.2:
|
|
$ax = COPY %1
|
|
$dx = COPY %2
|
|
RETQ killed $ax, killed $dx
|
|
...
|
|
|
|
# This test case was created as a reproducer for a bug when we got incorrect
|
|
# DBG_VALUE instructions after regalloc like this:
|
|
#
|
|
# movw $1, %cx
|
|
# #DEBUG_VALUE: foo:zzz <- $ch
|
|
# movl %ecx, %eax
|
|
# #DEBUG_VALUE: foo:zzz <- $ax
|
|
#
|
|
# The above is incorrect since the DBG_VALUE in the input is refering to the
|
|
# hi subreg, so after the COPY/movl the value is in $ah and not $ax (nor $al).
|
|
#
|
|
# We currently only get one DEBUG_VALUE here. In the future we could allow a
|
|
# second DEBUG_VALUE, as long as it is mapped to the hi subreg of the movl
|
|
# dst.
|
|
#
|
|
# CHECK-NOT: #DEBUG_VALUE:
|
|
# CHECK: #DEBUG_VALUE: foo:zzz <- ${{[abcd]+}}h
|
|
# CHECK-NOT: #DEBUG_VALUE:
|