llvm/test/CodeGen/X86/memset-2.ll
Rafael Espindola 9155b17815 Hide the stub created for MO_ExternalSymbol too.
given

declare void @llvm.memset.p0i8.i32(i8* nocapture, i8, i32, i32, i1)
declare void @foo()
define void @bar() {
  call void @foo()
  call void @llvm.memset.p0i8.i32(i8* null, i8 0, i32 188, i32 1, i1 false)
  ret void
}

We used to produce

L_foo$stub:
        .indirect_symbol        _foo
        .ascii  "\364\364\364\364\364"

_memset$stub:
        .indirect_symbol        _memset
        .ascii  "\364\364\364\364\364"

We not produce a private stub for memset too.

Stubs are not needed with recent linkers, but we still produce them for darwin8.

Thanks to David Fang for confirming that gcc used to do this too.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196468 91177308-0d34-0410-b5e6-96231b3b80d8
2013-12-05 05:19:12 +00:00

40 lines
1011 B
LLVM

; RUN: llc -mtriple=i386-apple-darwin -mcpu=yonah < %s | FileCheck %s
declare void @llvm.memset.i32(i8*, i8, i32, i32) nounwind
define fastcc void @t1() nounwind {
entry:
; CHECK-LABEL: t1:
; CHECK: calll L_memset$stub
call void @llvm.memset.p0i8.i32(i8* null, i8 0, i32 188, i32 1, i1 false)
unreachable
}
define fastcc void @t2(i8 signext %c) nounwind {
entry:
; CHECK-LABEL: t2:
; CHECK: calll L_memset$stub
call void @llvm.memset.p0i8.i32(i8* undef, i8 %c, i32 76, i32 1, i1 false)
unreachable
}
declare void @llvm.memset.p0i8.i32(i8* nocapture, i8, i32, i32, i1) nounwind
define void @t3(i8* nocapture %s, i8 %a) nounwind {
entry:
tail call void @llvm.memset.p0i8.i32(i8* %s, i8 %a, i32 8, i32 1, i1 false)
ret void
; CHECK-LABEL: t3:
; CHECK: imull $16843009
}
define void @t4(i8* nocapture %s, i8 %a) nounwind {
entry:
tail call void @llvm.memset.p0i8.i32(i8* %s, i8 %a, i32 15, i32 1, i1 false)
ret void
; CHECK-LABEL: t4:
; CHECK: imull $16843009
; CHECK-NOT: imul
; CHECK: ret
}