55 lines
1.8 KiB
LLVM
55 lines
1.8 KiB
LLVM
; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck -check-prefix=CHECK-NO-FP %s
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; RUN: llc < %s -mtriple=x86_64-apple-darwin -disable-fp-elim | FileCheck -check-prefix=CHECK-FP %s
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; RUN: llc < %s -mtriple=x86_64-linux-gnu | FileCheck -check-prefix=LINUX-NO-FP %s
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; RUN: llc < %s -mtriple=x86_64-linux-gnu -disable-fp-elim | FileCheck -check-prefix=LINUX-FP %s
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define void @func() {
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entry:
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unreachable
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}
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; MachO cannot handle an empty function.
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; CHECK-NO-FP: _func:
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; CHECK-NO-FP-NEXT: .cfi_startproc
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; CHECK-NO-FP: nop
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; CHECK-NO-FP-NEXT: .cfi_endproc
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; CHECK-FP: _func:
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; CHECK-FP-NEXT: .cfi_startproc
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; CHECK-FP-NEXT: :
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; CHECK-FP-NEXT: pushq %rbp
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; CHECK-FP-NEXT: :
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; CHECK-FP-NEXT: .cfi_def_cfa_offset 16
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; CHECK-FP-NEXT: :
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; CHECK-FP-NEXT: .cfi_offset %rbp, -16
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; CHECK-FP-NEXT: movq %rsp, %rbp
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; CHECK-FP-NEXT: :
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; CHECK-FP-NEXT: .cfi_def_cfa_register %rbp
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; CHECK-FP-NEXT: .cfi_endproc
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; An empty function is perfectly fine on ELF.
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; LINUX-NO-FP: func:
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; LINUX-NO-FP-NEXT: .cfi_startproc
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; LINUX-NO-FP-NEXT: {{^}}#
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; LINUX-NO-FP-NEXT: {{^}}.L{{.*}}:{{$}}
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; LINUX-NO-FP-NEXT: .size func, .L{{.*}}-func
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; LINUX-NO-FP-NEXT: .cfi_endproc
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; A cfi directive can point to the end of a function. It (and in fact the
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; entire body) could be optimized out because of the unreachable, but we
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; don't do it right now.
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; LINUX-FP: func:
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; LINUX-FP-NEXT: .cfi_startproc
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; LINUX-FP-NEXT: {{^}}#
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; LINUX-FP-NEXT: pushq %rbp
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; LINUX-FP-NEXT: {{^}}.L{{.*}}:{{$}}
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; LINUX-FP-NEXT: .cfi_def_cfa_offset 16
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; LINUX-FP-NEXT: {{^}}.L{{.*}}:{{$}}
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; LINUX-FP-NEXT: .cfi_offset %rbp, -16
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; LINUX-FP-NEXT: movq %rsp, %rbp
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; LINUX-FP-NEXT:{{^}}.L{{.*}}:{{$}}
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; LINUX-FP-NEXT: .cfi_def_cfa_register %rbp
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; LINUX-FP-NEXT:{{^}}.L{{.*}}:{{$}}
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; LINUX-FP-NEXT: .size func, .Lfunc_end0-func
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; LINUX-FP-NEXT: .cfi_endproc
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