1# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
2# RUN: llc %s -o - -mtriple=x86_64-unknown-linux -run-pass=twoaddressinstruction -verify-machineinstrs | FileCheck %s
3
4# In TwoAddressInstructionPass, new instructions should be added to DistanceMap.
5# In this case, function convertInstTo3Addr is called on the first ADD
6# instruction, extra COPY instructions are generated. If they are not added to
7# DistanceMap, function noUseAfterLastDef computes a wrong value for the later
8# ADD instruction, and a different commute decision is made.
9
10--- |
11  ; ModuleID = 't.ll'
12  source_filename = "t.ll"
13  target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
14  target triple = "x86_64-unknown-linux"
15
16  declare i16 @llvm.sadd.sat.i16(i16, i16)
17
18  define signext i16 @func16(i16 signext %x, i16 signext %y, i16 signext %z) nounwind {
19    %a = mul i16 %y, %z
20    %tmp = call i16 @llvm.sadd.sat.i16(i16 %x, i16 %a)
21    ret i16 %tmp
22  }
23
24...
25---
26name:            func16
27alignment:       16
28tracksRegLiveness: true
29registers:
30  - { id: 0, class: gr32 }
31  - { id: 1, class: gr32 }
32  - { id: 2, class: gr32 }
33  - { id: 3, class: gr16 }
34  - { id: 4, class: gr32 }
35  - { id: 5, class: gr16 }
36  - { id: 6, class: gr16 }
37  - { id: 7, class: gr32 }
38  - { id: 8, class: gr32 }
39  - { id: 9, class: gr32 }
40  - { id: 10, class: gr16 }
41  - { id: 11, class: gr32 }
42  - { id: 13, class: gr32 }
43  - { id: 14, class: gr16 }
44frameInfo:
45  maxAlignment:    1
46body:             |
47  bb.0 :
48    liveins: $edi, $esi, $edx
49    ; CHECK-LABEL: name: func16
50    ; CHECK: liveins: $edi, $esi, $edx
51    ; CHECK-NEXT: {{  $}}
52    ; CHECK-NEXT: [[COPY:%[0-9]+]]:gr32 = COPY killed $edx
53    ; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr32 = COPY killed $esi
54    ; CHECK-NEXT: [[COPY2:%[0-9]+]]:gr32 = COPY killed $edi
55    ; CHECK-NEXT: [[COPY3:%[0-9]+]]:gr16 = COPY killed [[COPY2]].sub_16bit
56    ; CHECK-NEXT: [[COPY4:%[0-9]+]]:gr32 = COPY [[COPY1]]
57    ; CHECK-NEXT: [[IMUL32rr:%[0-9]+]]:gr32 = IMUL32rr [[IMUL32rr]], killed [[COPY]], implicit-def dead $eflags
58    ; CHECK-NEXT: [[COPY4:%[0-9]+]]:gr16 = COPY killed [[IMUL32rr]].sub_16bit
59    ; CHECK-NEXT: [[DEF:%[0-9]+]]:gr64_nosp = IMPLICIT_DEF
60    ; CHECK-NEXT: [[DEF]].sub_16bit:gr64_nosp = COPY [[COPY3]]
61    ; CHECK-NEXT: [[DEF1:%[0-9]+]]:gr64_nosp = IMPLICIT_DEF
62    ; CHECK-NEXT: [[DEF1]].sub_16bit:gr64_nosp = COPY [[COPY4]]
63    ; CHECK-NEXT: [[LEA64_32r:%[0-9]+]]:gr32 = LEA64_32r killed [[DEF]], 1, killed [[DEF1]], 0, $noreg
64    ; CHECK-NEXT: [[COPY5:%[0-9]+]]:gr16 = COPY killed [[LEA64_32r]].sub_16bit
65    ; CHECK-NEXT: [[MOVSX32rr16_:%[0-9]+]]:gr32 = MOVSX32rr16 killed [[COPY5]]
66    ; CHECK-NEXT: [[COPY6:%[0-9]+]]:gr32 = COPY [[MOVSX32rr16_]]
67    ; CHECK-NEXT: [[SAR32ri:%[0-9]+]]:gr32 = SAR32ri [[SAR32ri]], 15, implicit-def dead $eflags
68    ; CHECK-NEXT: [[COPY6:%[0-9]+]]:gr32 = COPY [[SAR32ri]]
69    ; CHECK-NEXT: [[XOR32ri:%[0-9]+]]:gr32 = XOR32ri [[XOR32ri]], -32768, implicit-def dead $eflags
70    ; CHECK-NEXT: [[COPY6:%[0-9]+]]:gr16 = COPY [[COPY3]]
71    ; CHECK-NEXT: [[ADD16rr:%[0-9]+]]:gr16 = ADD16rr [[ADD16rr]], killed [[COPY4]], implicit-def $eflags
72    ; CHECK-NEXT: undef %11.sub_16bit:gr32 = COPY killed [[ADD16rr]]
73    ; CHECK-NEXT: [[COPY6:%[0-9]+]]:gr32 = COPY [[XOR32ri]]
74    ; CHECK-NEXT: [[CMOV32rr:%[0-9]+]]:gr32 = CMOV32rr [[CMOV32rr]], killed %11, 1, implicit killed $eflags
75    ; CHECK-NEXT: [[COPY6:%[0-9]+]]:gr16 = COPY killed [[CMOV32rr]].sub_16bit
76    ; CHECK-NEXT: $ax = COPY killed [[COPY6]]
77    ; CHECK-NEXT: RET 0, killed $ax
78    %2:gr32 = COPY killed $edx
79    %1:gr32 = COPY killed $esi
80    %0:gr32 = COPY killed $edi
81    %3:gr16 = COPY killed %0.sub_16bit:gr32
82    %4:gr32 = IMUL32rr killed %1:gr32, killed %2:gr32, implicit-def dead $eflags
83    %5:gr16 = COPY killed %4.sub_16bit:gr32
84    %6:gr16 = ADD16rr %3:gr16, %5:gr16, implicit-def dead $eflags
85    %7:gr32 = MOVSX32rr16 killed %6:gr16
86    %8:gr32 = SAR32ri killed %7:gr32, 15, implicit-def dead $eflags
87    %9:gr32 = XOR32ri killed %8:gr32, -32768, implicit-def dead $eflags
88    %10:gr16 = ADD16rr killed %3:gr16, killed %5:gr16, implicit-def $eflags
89    %11:gr32 = INSERT_SUBREG undef %12:gr32, killed %10:gr16, %subreg.sub_16bit
90    %13:gr32 = CMOV32rr killed %11:gr32, killed %9:gr32, 0, implicit killed $eflags
91    %14:gr16 = COPY killed %13.sub_16bit:gr32
92    $ax = COPY killed %14:gr16
93    RET 0, killed $ax
94
95...
96