1 # Check that the backend can handle consecutive select instructions also in
2 # the presence of DEBUG_VALUE machine instructions, which should be moved.
4 # RUN: llc %s -mtriple=s390x-linux-gnu -mcpu=z13 -run-pass=finalize-isel \
5 # RUN: -o - 2>&1 | FileCheck %s
7 # CHECK-LABEL: bb.1 (%ir-block.0):
8 # CHECK-NEXT: %5:fp32bit = PHI %1, %bb.0, %2, %bb.2
9 # CHECK-NEXT: %6:fp32bit = PHI %3, %bb.0, %4, %bb.2
10 # CHECK-NEXT: %7:fp32bit = PHI %1, %bb.0, %4, %bb.2
11 # CHECK-NEXT: DBG_VALUE %5, $noreg, !5, !DIExpression(), debug-location !9
12 # CHECK-NEXT: DBG_VALUE %6, $noreg, !5, !DIExpression(), debug-location !9
13 # CHECK-NEXT: %8:fp32bit = AEBR %5, killed %6, implicit-def dead $cc, implicit $fpc
17 source_filename = "tc.ll"
18 target datalayout = "E-m:e-i1:8:16-i8:8:16-i64:64-f128:64-v128:64-a:8:16-n32:64"
20 define float @fun(i1 %cmp, float %arg0, float %arg1, float %arg2, float %arg3, float %arg4) #0 {
21 %fs0 = select i1 %cmp, float %arg0, float %arg1
22 ; Keep the dbg metadata live by referencing it in the IR.
23 call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !7, metadata !DIExpression()), !dbg !9
24 %fs1 = select i1 %cmp, float %arg2, float %arg3
25 call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !7, metadata !DIExpression()), !dbg !9
26 %fs2 = select i1 %cmp, float %arg0, float %arg3
27 %s0 = fadd float %fs0, %fs1
28 %s1 = fadd float %s0, %fs2
32 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
34 attributes #0 = { "target-cpu"="z13" }
37 !llvm.module.flags = !{!3, !4}
39 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "llvm", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
40 !1 = !DIFile(filename: "test.ll", directory: "/tmp")
42 !3 = !{i32 2, !"Dwarf Version", i32 4}
43 !4 = !{i32 2, !"Debug Info Version", i32 3}
44 !5 = distinct !DISubprogram(name: "test_dbg_value", scope: !1, file: !1, line: 1, type: !6, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
45 !6 = !DISubroutineType(types: !2)
46 !7 = !DILocalVariable(name: "in", arg: 1, scope: !5, file: !1, line: 1, type: !8)
47 !8 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
48 !9 = !DILocation(line: 1, column: 1, scope: !5)
54 tracksRegLiveness: true
56 - { id: 0, class: gr32bit }
57 - { id: 1, class: fp32bit }
58 - { id: 2, class: fp32bit }
59 - { id: 3, class: fp32bit }
60 - { id: 4, class: fp32bit }
61 - { id: 5, class: fp32bit }
62 - { id: 6, class: fp32bit }
63 - { id: 7, class: fp32bit }
64 - { id: 8, class: fp32bit }
65 - { id: 9, class: fp32bit }
67 - { reg: '$r2l', virtual-reg: '%0' }
68 - { reg: '$f0s', virtual-reg: '%1' }
69 - { reg: '$f2s', virtual-reg: '%2' }
70 - { reg: '$f4s', virtual-reg: '%3' }
71 - { reg: '$f6s', virtual-reg: '%4' }
75 - { id: 0, size: 4, alignment: 8, stack-id: default, isImmutable: true }
78 liveins: $r2l, $f0s, $f2s, $f4s, $f6s
80 %4:fp32bit = COPY $f6s
81 %3:fp32bit = COPY $f4s
82 %2:fp32bit = COPY $f2s
83 %1:fp32bit = COPY $f0s
84 %0:gr32bit = COPY $r2l
85 TMLMux %0, 1, implicit-def $cc
86 %5:fp32bit = SelectVR32 %1, %2, 15, 7, implicit $cc
87 DBG_VALUE %5, $noreg, !7, !DIExpression(), debug-location !9
88 %6:fp32bit = SelectVR32 %3, %4, 15, 7, implicit $cc
89 DBG_VALUE %6, $noreg, !7, !DIExpression(), debug-location !9
90 %7:fp32bit = SelectVR32 %1, %4, 15, 7, implicit $cc
91 %8:fp32bit = AEBR %5, killed %6, implicit-def dead $cc, implicit $fpc
92 %9:fp32bit = AEBR %8, killed %7, implicit-def dead $cc, implicit $fpc