xref: /llvm-project/llvm/test/CodeGen/X86/machine-combiner-dbg.mir (revision 6e861d818ae428dd8d2915ce37206a60533cd2d4)
1# RUN: llc -mtriple=x86_64-gnu-linux -run-pass=machine-combiner %s -o - | FileCheck %s
2
3--- |
4  define float @reassoc_me(float %f1, float %f2, float %f3, float %f4) !dbg !4 {
5    %add = fadd reassoc nsz float %f1, %f2, !dbg !10
6    %add1 = fadd reassoc nsz float %add, %f3, !dbg !10
7    %add2 = fadd reassoc nsz float %add1, %f4, !dbg !10
8    call void @llvm.dbg.value(metadata float %add2, metadata !9, metadata !DIExpression()), !dbg !10
9    ret float %add2, !dbg !10
10  }
11
12  declare void @llvm.dbg.value(metadata, metadata, metadata)
13
14  !llvm.dbg.cu = !{!0}
15  !llvm.module.flags = !{!2, !3}
16
17  !0 = distinct !DICompileUnit(language: DW_LANG_C11, file: !1, producer: "hello", isOptimized: true, emissionKind: FullDebug)
18  !1 = !DIFile(filename: "reassoc.c", directory: "blah")
19  !2 = !{i32 7, !"Dwarf Version", i32 4}
20  !3 = !{i32 2, !"Debug Info Version", i32 3}
21  !4 = distinct !DISubprogram(name: "reassoc_me", scope: !1, file: !1, line: 1, type: !5, scopeLine: 1, unit: !0, retainedNodes: !8)
22  !5 = !DISubroutineType(types: !6)
23  !6 = !{!7, !7, !7, !7, !7}
24  !7 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float)
25  !8 = !{!9}
26  !9 = !DILocalVariable(name: "temp3", scope: !4, file: !1, line: 4, type: !7)
27  !10 = !DILocation(line: 0, scope: !4)
28
29...
30---
31name:            reassoc_me
32alignment:       16
33debugInstrRef:   true
34body:             |
35  bb.0 (%ir-block.0):
36    liveins: $xmm0, $xmm1, $xmm2, $xmm3
37
38    %3:fr32 = COPY $xmm3
39    %2:fr32 = COPY $xmm2
40    %1:fr32 = COPY $xmm1
41    %0:fr32 = COPY $xmm0
42    %4:fr32 = nsz reassoc nofpexcept ADDSSrr %0, %1, implicit $mxcsr, debug-location !10
43    %5:fr32 = nsz reassoc nofpexcept ADDSSrr %4, %2, implicit $mxcsr, debug-location !10
44    %6:fr32 = nsz reassoc nofpexcept ADDSSrr %5, %3, implicit $mxcsr, debug-instr-number 1, debug-location !10
45    DBG_INSTR_REF !9, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(1, 0), debug-location !10
46    $xmm0 = COPY %6, debug-location !10
47    RET 0, $xmm0, debug-location !10
48
49  ; CHECK: ![[VAR:.*]] = !DILocalVariable(name: "temp3"
50  ; CHECK:      %[[arg3:.*]]:fr32 = COPY $xmm3
51  ; CHECK-NEXT: %[[arg2:.*]]:fr32 = COPY $xmm2
52  ; CHECK-NEXT: %[[arg1:.*]]:fr32 = COPY $xmm1
53  ; CHECK-NEXT: %[[arg0:.*]]:fr32 = COPY $xmm0
54  ; CHECK-NEXT: %[[add1:.*]]:fr32 = {{.*}} ADDSSrr %[[arg0]], %[[arg1]]
55  ; CHECK-NEXT: %[[add2:.*]]:fr32 = {{.*}} ADDSSrr %[[arg2]], %[[arg3]]
56  ; CHECK-NEXT:                            ADDSSrr %[[add1]], killed %[[add2]], {{.*}} debug-instr-number 1
57  ; CHECK-NEXT: DBG_INSTR_REF ![[VAR]], !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(1, 0)
58...
59