a7d90af1be
Darwin platforms need the frame register to always point at a valid record even if it's not updated in a leaf function. Backtraces are more important than one extra GPR. llvm-svn: 373738
16 lines
490 B
LLVM
16 lines
490 B
LLVM
; RUN: llc -mtriple=thumbv7k-apple-watchos %s -o - | FileCheck %s
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; r7 is FP on Darwin, and should be preserved even if we don't create a new
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; frame record for this leaf function. So make huge register pressure to try &
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; tempt LLVM to use it.
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define void @foo([16 x i32]* %ptr) {
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; CHECK-LABEL: foo:
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; CHECK: push.w
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; CHECK: .cfi_offset r7
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; CHECK-NOT: r7
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; CHECK: pop.w
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%val = load volatile [16 x i32], [16 x i32]* %ptr
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store volatile [16 x i32] %val, [16 x i32]* %ptr
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ret void
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}
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