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# RUN: llc -o - %s -march=x86-64 -run-pass none | FileCheck %s
# Test various aspects of register class specification on machine operands.
--- |
define void @func() { ret void }
...
---
# CHECK-LABEL: name: func
# CHECK: registers:
# CHECK: - { id: 0, class: gr32, preferred-register: '' }
# CHECK: - { id: 1, class: gr64, preferred-register: '' }
# CHECK: - { id: 2, class: gr32, preferred-register: '' }
# CHECK: - { id: 3, class: gr16, preferred-register: '' }
# CHECK: - { id: 4, class: _, preferred-register: '' }
name: func
body: |
bb.0:
%0 : gr32 = COPY $rax
%1.sub_32bit : gr64 = COPY $eax
$rdx = COPY %1
%2 = COPY $ecx
$ecx = COPY %2 : gr32
%3 : gr16 = COPY $bx
$bx = COPY %3 : gr16
%4 : _(s32) = COPY $edx
...
|
