# RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - \
# RUN: -experimental-debug-variable-locations=true \
-# RUN: | FileCheck %s -implicit-check-not=DBG_VALUE
+# RUN: | FileCheck %s -implicit-check-not=DBG_VALUE \
+# RUN: --check-prefixes=CHECK,COMMON
# RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - \
# RUN: -experimental-debug-variable-locations=false \
-# RUN: | FileCheck %s --check-prefixes=VARLOC -implicit-check-not=DBG_VALUE
+# RUN: | FileCheck %s -implicit-check-not=DBG_VALUE \
+# RUN: --check-prefixes=VARLOC,COMMON
#
# This test is designed to stimulate a simplification of variable-value
# propagation in InstrRefBasedLDV. When we only have a single assignment of
# VARLOC-LABEL: bb.3:
# VARLOC: DBG_VALUE
#
+## Common tail for 'test2' -- this is checking that the assignment of undef or
+## $noreg in single-assignment mode doesn't lead to trouble further down the
+## line, specifically assertion failures.
+#
+# COMMON-LABEL: name: test2
+# COMMON: DBG_VALUE $noreg
--- |
define i32 @_Z8bb_to_bb() local_unnamed_addr !dbg !12 {
entry:
ret i32 0, !dbg !17
}
+ define i32 @test2() local_unnamed_addr !dbg !112 {
+ entry:
+ ret i32 0, !dbg !117
+ }
+
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!7, !8, !9, !10}
!llvm.ident = !{!11}
!18 = distinct !DILexicalBlock(scope: !12, file: !1, line: 1, column: 1)
!19 = distinct !DILexicalBlock(scope: !12, file: !1, line: 1, column: 1)
!20 = !DILocation(line: 10, scope: !19)
+ !112 = distinct !DISubprogram(name: "test2", linkageName: "102", scope: !1, file: !1, line: 6, type: !13, scopeLine: 6, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !115)
+ !115 = !{!116}
+ !116 = !DILocalVariable(name: "myVar", scope: !118, file: !1, line: 7, type: !6)
+ !117 = !DILocation(line: 10, scope: !118)
+ !118 = distinct !DILexicalBlock(scope: !112, file: !1, line: 1, column: 1)
+ !119 = distinct !DILexicalBlock(scope: !112, file: !1, line: 1, column: 1)
+ !120 = !DILocation(line: 10, scope: !119)
...
---
bb.6:
RET 0, debug-location !17
+...
+---
+name: test2
+debugValueSubstitutions:
+ - { srcinst: 4, srcop: 0, dstinst: 3, dstop: 0, subreg: 0 }
+body: |
+ bb.0.entry:
+ successors: %bb.1, %bb.5, %bb.6
+
+ $rax = MOV64ri 1, debug-instr-number 1, debug-location !117
+ JCC_1 %bb.5, 1, implicit $eflags
+ JCC_1 %bb.6, 2, implicit $eflags
+ JMP_1 %bb.1
+
+ bb.1:
+ successors: %bb.2, %bb.3
+
+ DBG_VALUE $noreg, $noreg, !116, !DIExpression(), debug-location !117
+ JCC_1 %bb.3, 1, implicit $eflags, debug-location !117
+
+ bb.2:
+ successors: %bb.4
+
+ JMP_1 %bb.4, debug-location !120
+
+ bb.3:
+ successors: %bb.4
+
+ JMP_1 %bb.4, debug-location !117
+
+ bb.4:
+ successors: %bb.5, %bb.6
+
+ JCC_1 %bb.5, 1, implicit $eflags, debug-location !117
+ JMP_1 %bb.6, debug-location !117
+
+ bb.5:
+ RET 0, debug-location !117
+
+ bb.6:
+ RET 0, debug-location !117