36 lines
929 B
YAML
36 lines
929 B
YAML
# RUN: llc -O0 %s -o - -march=avr | FileCheck %s
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# This test checks the expansion of the 16-bit 'LDDWRdPtrQ' pseudo instruction.
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#
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# This test ensures that the pseudo expander can correctly handle the case
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# where we are expanding a 16-bit LDD instruction where the source and
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# destination registers are the same.
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#
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# The instruction itself is earlyclobber and so ISel will never produce an
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# instruction like this, but the stack slot loading can and will.
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--- |
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target triple = "avr--"
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define void @test_lddwrdptrq() {
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entry:
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ret void
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}
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...
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---
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name: test_lddwrdptrq
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tracksRegLiveness: true
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body: |
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bb.0.entry:
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; CHECK-LABEL: test_lddwrdptrq
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; CHECK: ldd [[SCRATCH:r[0-9]+]], Z+10
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; CHECK-NEXT: push [[SCRATCH]]
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; CHECK-NEXT: ldd [[SCRATCH]], Z+11
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; CHECK-NEXT: mov r31, [[SCRATCH]]
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; CHECK-NEXT: pop r30
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early-clobber %r31r30 = LDDWRdPtrQ undef %r31r30, 10
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...
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