2009-06-15-not-a-tail-call.ll
978 Bytes
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=i686-- -tailcallopt | FileCheck %s
; Bug 4396. This tail call can NOT be optimized.
declare fastcc i8* @_D3gcx2GC12mallocNoSyncMFmkZPv() nounwind
define fastcc i8* @_D3gcx2GC12callocNoSyncMFmkZPv() nounwind {
; CHECK-LABEL: _D3gcx2GC12callocNoSyncMFmkZPv:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: pushl %esi
; CHECK-NEXT: calll _D3gcx2GC12mallocNoSyncMFmkZPv
; CHECK-NEXT: movl %eax, %esi
; CHECK-NEXT: pushl $0
; CHECK-NEXT: pushl $2
; CHECK-NEXT: pushl $0
; CHECK-NEXT: pushl %eax
; CHECK-NEXT: calll memset
; CHECK-NEXT: addl $16, %esp
; CHECK-NEXT: movl %esi, %eax
; CHECK-NEXT: popl %esi
; CHECK-NEXT: retl
entry:
%tmp6 = tail call fastcc i8* @_D3gcx2GC12mallocNoSyncMFmkZPv() ; <i8*> [#uses=2]
%tmp9 = tail call i8* @memset(i8* %tmp6, i32 0, i64 2) ; <i8*> [#uses=0]
ret i8* %tmp6
}
declare i8* @memset(i8*, i32, i64)