mirror of
https://github.com/c64scene-ar/llvm-6502.git
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7b837d8c75
This adds a second implementation of the AArch64 architecture to LLVM, accessible in parallel via the "arm64" triple. The plan over the coming weeks & months is to merge the two into a single backend, during which time thorough code review should naturally occur. Everything will be easier with the target in-tree though, hence this commit. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205090 91177308-0d34-0410-b5e6-96231b3b80d8
27 lines
794 B
LLVM
27 lines
794 B
LLVM
; RUN: llc -mtriple=arm64-apple-ios -o - %s | FileCheck %s --check-prefix=CHECK-DARWIN
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; RUN: llc -mtriple=arm64-linux-gnu -o - %s | FileCheck %s
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; x18 is reserved as a platform register on Darwin but not on other
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; systems. Create loads of register pressure and make sure this is respected.
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; Also, fp must always refer to a valid frame record, even if it's not the one
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; of the current function, so it shouldn't be used either.
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@var = global [30 x i64] zeroinitializer
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define void @keep_live() {
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%val = load volatile [30 x i64]* @var
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store volatile [30 x i64] %val, [30 x i64]* @var
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; CHECK: ldr x18
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; CHECK: str x18
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; CHECK-DARWIN-NOT: ldr fp
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; CHECK-DARWIN-NOT: ldr x18
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; CHECK-DARWIN: Spill
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; CHECK-DARWIN-NOT: ldr fp
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; CHECK-DARWIN-NOT: ldr x18
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; CHECK-DARWIN: ret
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ret void
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}
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