derek.holloway
7502bf64a4
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57 lines
1.8 KiB
LLVM
57 lines
1.8 KiB
LLVM
; RUN: llc -mtriple=aarch64-none-linux-gnu -frame-pointer=none < %s | \
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; RUN: FileCheck %s --check-prefixes=CHECK,NONE
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; RUN: llc -mtriple=aarch64-none-linux-gnu -frame-pointer=reserved < %s | \
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; RUN: FileCheck %s --check-prefixes=CHECK,RESERVED
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; RUN: llc -mtriple=aarch64-none-linux-gnu -frame-pointer=all < %s | \
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; RUN: FileCheck %s --check-prefixes=CHECK,ALL
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; By default, Darwin and Windows will reserve x29
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; RUN: llc -mtriple=aarch64-darwin -frame-pointer=none < %s | \
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; RUN: FileCheck %s --check-prefixes=CHECK,RESERVED
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; RUN: llc -mtriple=aarch64-darwin -frame-pointer=none < %s | \
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; RUN: FileCheck %s --check-prefixes=CHECK,RESERVED
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@var = global i32 0
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declare void @bar()
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define void @test_w29_reserved() {
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; CHECK-LABEL: test_w29_reserved:
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; ALL: add x29, sp
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; NONE-NOT: add x29
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; NONE-NOT: mov x29
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; RESERVED-NOT: add x29
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; RESERVED-NOT: mov x29
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%val1 = load volatile i32, ptr @var
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%val2 = load volatile i32, ptr @var
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%val3 = load volatile i32, ptr @var
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%val4 = load volatile i32, ptr @var
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%val5 = load volatile i32, ptr @var
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%val6 = load volatile i32, ptr @var
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%val7 = load volatile i32, ptr @var
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%val8 = load volatile i32, ptr @var
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%val9 = load volatile i32, ptr @var
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%val10 = load volatile i32, ptr @var
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; NONE: ldr w29,
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; ALL-NOT: ldr w29,
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; RESERVED-NOT: ldr w29,
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; Call to prevent fp-elim that occurs regardless in leaf functions.
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call void @bar()
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store volatile i32 %val1, ptr @var
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store volatile i32 %val2, ptr @var
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store volatile i32 %val3, ptr @var
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store volatile i32 %val4, ptr @var
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store volatile i32 %val5, ptr @var
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store volatile i32 %val6, ptr @var
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store volatile i32 %val7, ptr @var
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store volatile i32 %val8, ptr @var
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store volatile i32 %val9, ptr @var
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store volatile i32 %val10, ptr @var
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ret void
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; CHECK: ret
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}
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