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Only Linux is supported at the moment, and other platforms quickly fault. As a result these tests would fail on non-Linux hosts. It may be worth making the tests more generic again as more platforms are supported. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174170 91177308-0d34-0410-b5e6-96231b3b80d8
52 lines
1.6 KiB
LLVM
52 lines
1.6 KiB
LLVM
; RUN: llc -verify-machineinstrs -mtriple=aarch64-none-linux-gnu %s -filetype=obj -o %t
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; RUN: llvm-objdump -s %t | FileCheck %s
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@var = global i32 0
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declare void @bar()
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define i64 @check_largest_class(i32 %in) {
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%res = load i32* @var
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call void @bar()
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%ext = zext i32 %res to i64
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ret i64 %ext
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}
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; The really key points we're checking here are:
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; * Return register is x30.
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; * Pointer format is 0x1b (GNU doesn't appear to understand others).
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; The rest is largely incidental, but not expected to change regularly.
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; Output is:
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; CHECK: Contents of section .eh_frame:
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; CHECK-NEXT: 0000 10000000 00000000 017a5200 017c1e01 .........zR..|..
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; CHECK-NEXT: 0010 1b0c1f00 18000000 18000000 00000000 ................
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; Won't check the rest, it's rather incidental.
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; 0020 24000000 00440c1f 10449e02 93040000 $....D...D......
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; The first CIE:
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; -------------------
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; 10000000: length of first CIE = 0x10
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; 00000000: This is a CIE
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; 01: version = 0x1
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; 7a 52 00: augmentation string "zR" -- pointer format is specified
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; 01: code alignment factor 1
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; 7c: data alignment factor -4
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; 1e: return address register 30 (== x30).
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; 01: 1 byte of augmentation
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; 1b: pointer format 1b: DW_EH_PE_pcrel | DW_EH_PE_sdata4
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; 0c 1f 00: initial instructions: "DW_CFA_def_cfa x31 ofs 0" in this case
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; Next the FDE:
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; -------------
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; 18000000: FDE length 0x18
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; 18000000: Uses CIE 0x18 backwards (only coincidentally same as above)
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; 00000000: PC begin for this FDE is at 00000000 (relocation is applied here)
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; 24000000: FDE applies up to PC begin+0x24
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; 00: Augmentation string length 0 for this FDE
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; Rest: call frame instructions
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