llvm-project/llvm/test/CodeGen/PowerPC/empty-functions.ll

44 lines
1.5 KiB
LLVM

; RUN: llc < %s -mtriple=powerpc-apple-darwin | FileCheck -check-prefix=CHECK-MACHO %s
; RUN: llc < %s -mtriple=powerpc-apple-darwin -disable-fp-elim | FileCheck -check-prefix=CHECK-MACHO %s
; RUN: llc < %s -mtriple=powerpc-linux-gnu | FileCheck -check-prefix=LINUX-NO-FP %s
; RUN: llc < %s -mtriple=powerpc-linux-gnu -disable-fp-elim | FileCheck -check-prefix=LINUX-FP %s
define void @func() {
entry:
unreachable
}
; MachO cannot handle an empty function.
; CHECK-MACHO: _func:
; CHECK-MACHO-NEXT: .cfi_startproc
; CHECK-MACHO-NEXT: {{^}};
; CHECK-MACHO-NEXT: nop
; CHECK-MACHO-NEXT: .cfi_endproc
; An empty function is perfectly fine on ELF.
; LINUX-NO-FP: func:
; LINUX-NO-FP-NEXT: .cfi_startproc
; LINUX-NO-FP-NEXT: {{^}}#
; LINUX-NO-FP-NEXT: {{^}}.L{{.*}}:{{$}}
; LINUX-NO-FP-NEXT: .size func, .L{{.*}}-func
; LINUX-NO-FP-NEXT: .cfi_endproc
; A cfi directive can point to the end of a function. It (and in fact the
; entire body) could be optimized out because of the unreachable, but we
; don't do it right now.
; LINUX-FP: func:
; LINUX-FP-NEXT: .cfi_startproc
; LINUX-FP-NEXT: {{^}}#
; LINUX-FP-NEXT: stw 31, -4(1)
; LINUX-FP-NEXT: stwu 1, -16(1)
; LINUX-FP-NEXT: {{^}}.L{{.*}}:{{$}}
; LINUX-FP-NEXT: .cfi_def_cfa_offset 16
; LINUX-FP-NEXT: {{^}}.L{{.*}}:{{$}}
; LINUX-FP-NEXT: .cfi_offset r31, -4
; LINUX-FP-NEXT: mr 31, 1
; LINUX-FP-NEXT:{{^}}.L{{.*}}:{{$}}
; LINUX-FP-NEXT: .cfi_def_cfa_register r31
; LINUX-FP-NEXT:{{^}}.L{{.*}}:{{$}}
; LINUX-FP-NEXT: .size func, .Ltmp3-func
; LINUX-FP-NEXT: .cfi_endproc