Files
clang-p2996/llvm/test/CodeGen/AArch64/GlobalISel/select-atomic-load-store.mir
Matt Arsenault fae05692a3 CodeGen: Print/parse LLTs in MachineMemOperands
This will currently accept the old number of bytes syntax, and convert
it to a scalar. This should be removed in the near future (I think I
converted all of the tests already, but likely missed a few).

Not sure what the exact syntax and policy should be. We can continue
printing the number of bytes for non-generic instructions to avoid
test churn and only allow non-scalar types for generic instructions.

This will currently print the LLT in parentheses, but accept parsing
the existing integers and implicitly converting to scalar. The
parentheses are a bit ugly, but the parser logic seems unable to deal
without either parentheses or some keyword to indicate the start of a
type.
2021-06-30 16:54:13 -04:00

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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=aarch64-- -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s
--- |
target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
target triple = "aarch64"
define i8 @load_acq_i8(i8* %ptr) {
%v = load atomic i8, i8* %ptr acquire, align 8
ret i8 %v
}
...
---
name: load_acq_i8
alignment: 4
legalized: true
regBankSelected: true
tracksRegLiveness: true
liveins:
- { reg: '$x0' }
machineFunctionInfo: {}
body: |
bb.1:
liveins: $x0
; CHECK-LABEL: name: load_acq_i8
; CHECK: liveins: $x0
; CHECK: [[COPY:%[0-9]+]]:gpr64sp = COPY $x0
; CHECK: [[LDARB:%[0-9]+]]:gpr32 = LDARB [[COPY]] :: (load acquire (s8) from %ir.ptr, align 8)
; CHECK: $w0 = COPY [[LDARB]]
; CHECK: RET_ReallyLR implicit $w0
%0:gpr(p0) = COPY $x0
%2:gpr(s32) = G_LOAD %0(p0) :: (load acquire (s8) from %ir.ptr, align 8)
$w0 = COPY %2(s32)
RET_ReallyLR implicit $w0
...