xref: /llvm-project/llvm/test/CodeGen/SystemZ/twoaddr-kill.mir (revision df2d4bc4cbc0626364bd4c5fc8203a00fabcd0d5)
1# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
2# RUN: llc -o - %s -verify-machineinstrs -mtriple=s390x-linux-gnu -mcpu=z196 -run-pass=livevars,twoaddressinstruction | FileCheck %s
3
4# Check that the COPY from [[COPY3]] is not killed because there is a subsequent
5# use of [[COPY3]] in the INLINEASM instruction.
6---
7name: f2
8tracksRegLiveness: true
9body: |
10  bb.0:
11    liveins: $r2l
12
13    ; CHECK-LABEL: name: f2
14    ; CHECK: liveins: $r2l
15    ; CHECK-NEXT: {{  $}}
16    ; CHECK-NEXT: [[COPY:%[0-9]+]]:gr32bit = COPY killed $r2l
17    ; CHECK-NEXT: [[COPY1:%[0-9]+]]:grh32bit = COPY [[COPY]]
18    ; CHECK-NEXT: $r2l = COPY [[COPY]]
19    ; CHECK-NEXT: $r3l = COPY killed [[COPY]]
20    ; CHECK-NEXT: [[COPY2:%[0-9]+]]:grh32bit = COPY killed [[COPY1]]
21    ; CHECK-NEXT: INLINEASM &"stepa $1, $2, $3", 0 /* attdialect */, 393226 /* regdef:GRH32Bit */, def [[COPY2]], 2147483657 /* reguse tiedto:$0 */, [[COPY2]](tied-def 3), 9 /* reguse */, killed $r2l, 9 /* reguse */, killed $r3l
22    ; CHECK-NEXT: [[COPY3:%[0-9]+]]:grh32bit = COPY killed [[COPY2]]
23    ; CHECK-NEXT: [[COPY4:%[0-9]+]]:grh32bit = COPY [[COPY3]]
24    ; CHECK-NEXT: INLINEASM &"stepb $1, $2", 0 /* attdialect */, 393227 /* regdef-ec:GRH32Bit */, def early-clobber [[COPY4]], 2147483657 /* reguse tiedto:$0 */, [[COPY4]](tied-def 3), 393225 /* reguse:GRH32Bit */, [[COPY3]]
25    ; CHECK-NEXT: $r2l = COPY killed [[COPY4]]
26    ; CHECK-NEXT: Return implicit killed $r2l
27    %0:gr32bit = COPY killed $r2l
28    %2:grh32bit = COPY %0
29    $r2l = COPY %0
30    $r3l = COPY killed %0
31    INLINEASM &"stepa $1, $2, $3", 0 /* attdialect */, 393226 /* regdef:GRH32Bit */, def %1:grh32bit, 2147483657 /* reguse tiedto:$0 */, killed %2(tied-def 3), 9 /* reguse */, killed $r2l, 9 /* reguse */, killed $r3l
32    %4:grh32bit = COPY killed %1
33    INLINEASM &"stepb $1, $2", 0 /* attdialect */, 393227 /* regdef-ec:GRH32Bit */, def early-clobber %3:grh32bit, 2147483657 /* reguse tiedto:$0 */, killed %4(tied-def 3), 393225 /* reguse:GRH32Bit */, %4
34    $r2l = COPY killed %3
35    Return implicit killed $r2l
36...
37