forked from OSchip/llvm-project
29 lines
835 B
LLVM
29 lines
835 B
LLVM
; RUN: llc -mtriple=arm64-linux-gnu -mattr=+reserve-x18 -mattr=+call-saved-x18 \
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; RUN: -o - %s | FileCheck %s
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; RUN: llc -mtriple=arm64-linux-gnu -mattr=+reserve-x18 -mattr=+call-saved-x18 \
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; RUN: -global-isel \
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; RUN: -o - %s | FileCheck %s
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; RUN: llc -mtriple=arm64-linux-gnu -mattr=+reserve-x18 -mattr=+call-saved-x18 \
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; RUN: -fast-isel \
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; RUN: -o - %s | FileCheck %s
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; Used to exhaust the supply of GPRs.
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@var = global [30 x i64] zeroinitializer
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; If a register is specified to be both reserved and callee-saved, then it
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; should not be allocated and should not be spilled onto the stack.
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define void @foo() {
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; CHECK-NOT: str x18, [sp
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%val = load volatile [30 x i64], [30 x i64]* @var
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store volatile [30 x i64] %val, [30 x i64]* @var
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; CHECK-NOT: ldr x18
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; CHECK-NOT: str x18
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; CHECK-NOT: ldr x18, [sp
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ret void
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}
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