derek.holloway
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69 lines
2.2 KiB
YAML
69 lines
2.2 KiB
YAML
# RUN: llc -mtriple=x86_64-unknown-linux-gnu -run-pass x86-fixup-bw-insts %s -o - -experimental-debug-variable-locations | FileCheck %s
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# RUN: llc -mtriple=x86_64-unknown-linux-gnu -passes="require<profile-summary>,function(machine-function(x86-fixup-bw-insts))" %s -o - -experimental-debug-variable-locations | FileCheck %s
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#
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# This test is a copy of llvm/test/CodeGen/X86/fixup-bw-inst.mir, with a few
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# test bodies removed. The pass promotes certain register operations to be
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# wider operations (such as loads and sign extensions), which has an instruction
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# encoding benefit. New instructions are created, and so should have a debug
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# instruction number substitution; but in addition a qualifiying subregister,
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# because the newly def'd register is a different size to the old one.
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#
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# Plain copies that get transformed are not tested for, as they should never
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# be instrumented. At a high level, copies do not define a value; they move
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# them.
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---
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# CHECK-LABEL: name: test1
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name: test1
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alignment: 16
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tracksRegLiveness: true
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debugInstrRef: true
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liveins:
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- { reg: '$rax' }
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# CHECK: debugValueSubstitutions:
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# CHECK-NEXT - { srcinst: 1, srcop: 0, dstinst: 2, dstop: 0, subreg: 4 }
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## Subreg 4 -> sub_16bit
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body: |
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bb.0:
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liveins: $rax
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$ax = MOV16rm killed $rax, 1, $noreg, 0, $noreg, debug-instr-number 1
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; CHECK: $eax = MOVZX32rm16 killed $rax, {{.*}} debug-instr-number 2
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RET64 $ax
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...
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---
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# CHECK-LABEL: name: test3
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name: test3
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alignment: 16
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tracksRegLiveness: true
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debugInstrRef: true
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liveins:
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- { reg: '$rdi' }
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# CHECK: debugValueSubstitutions:
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# CHECK-NEXT - { srcinst: 1, srcop: 0, dstinst: 2, dstop: 0, subreg: 4 }
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## Subreg 4 -> sub_16bit
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body: |
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bb.0:
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successors: %bb.1(0x30000000), %bb.2(0x50000000)
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liveins: $rdi
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TEST64rr $rdi, $rdi, implicit-def $eflags
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JCC_1 %bb.1, 4, implicit $eflags
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bb.2:
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liveins: $rdi
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$ax = MOV16rm killed $rdi, 1, $noreg, 0, $noreg, implicit-def $eax, debug-instr-number 1
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; CHECK: $eax = MOVZX32rm16 killed $rdi, {{.*}} debug-instr-number 2
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$ax = KILL $ax, implicit killed $eax
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RET64 $ax
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bb.1:
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$eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags
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$ax = KILL $ax, implicit killed $eax
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RET64 $ax
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...
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