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1# RUN: llc -mtriple=x86_64-unknown-linux-gnu -run-pass x86-fixup-bw-insts %s -o - -experimental-debug-variable-locations | FileCheck %s2#3# This test is a copy of llvm/test/CodeGen/X86/fixup-bw-inst.mir, with a few4# test bodies removed. The pass promotes certain register operations to be5# wider operations (such as loads and sign extensions), which has an instruction6# encoding benefit. New instructions are created, and so should have a debug 7# instruction number substitution; but in addition a qualifiying subregister,8# because the newly def'd register is a different size to the old one.9#10# Plain copies that get transformed are not tested for, as they should never11# be instrumented. At a high level, copies do not define a value; they move12# them.13 14---15# CHECK-LABEL: name: test116name: test117alignment: 1618tracksRegLiveness: true19debugInstrRef: true20liveins:21 - { reg: '$rax' }22# CHECK: debugValueSubstitutions:23# CHECK-NEXT - { srcinst: 1, srcop: 0, dstinst: 2, dstop: 0, subreg: 4 }24## Subreg 4 -> sub_16bit25body: |26 bb.0:27 liveins: $rax28 29 $ax = MOV16rm killed $rax, 1, $noreg, 0, $noreg, debug-instr-number 130 ; CHECK: $eax = MOVZX32rm16 killed $rax, {{.*}} debug-instr-number 231 32 RET64 $ax33 34...35---36# CHECK-LABEL: name: test337name: test338alignment: 1639tracksRegLiveness: true40debugInstrRef: true41liveins:42 - { reg: '$rdi' }43# CHECK: debugValueSubstitutions:44# CHECK-NEXT - { srcinst: 1, srcop: 0, dstinst: 2, dstop: 0, subreg: 4 }45## Subreg 4 -> sub_16bit46body: |47 bb.0:48 successors: %bb.1(0x30000000), %bb.2(0x50000000)49 liveins: $rdi50 51 TEST64rr $rdi, $rdi, implicit-def $eflags52 JCC_1 %bb.1, 4, implicit $eflags53 54 bb.2:55 liveins: $rdi56 57 $ax = MOV16rm killed $rdi, 1, $noreg, 0, $noreg, implicit-def $eax, debug-instr-number 158 ; CHECK: $eax = MOVZX32rm16 killed $rdi, {{.*}} debug-instr-number 259 $ax = KILL $ax, implicit killed $eax60 RET64 $ax61 62 bb.1:63 $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags64 $ax = KILL $ax, implicit killed $eax65 RET64 $ax66 67...68