llvm-6502/test/CodeGen/X86/subreg-to-reg-3.ll
Michael Liao 26ebdd1e7c Rewrite some tests with FileCHeck in X86 codegen
- Revise previous patches of the same purpose by fixing
  *) grep <PA> | not grep <PB> semantically is not the same as
     CHECK: <PA>{{^<PB>.*$}} as the former will check all occurrences of <PA>
     while the later only check the first match. As the result, CHECK needs
     putting in all place where <PA> occurs.
  *) grep <PA> | count <N> needs a final CHECK-NOT of the same pattern.
     (As 'CHECK-<N>' is proposed for discussion, converting 'grep | count <N>'
      where N > 1 is postponed.)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180742 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-29 22:41:29 +00:00

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LLVM

; RUN: llc < %s -march=x86-64 | FileCheck %s
; CHECK: imull
; Don't eliminate or coalesce away the explicit zero-extension!
define i64 @foo(i64 %a) {
%b = mul i64 %a, 7823
%c = and i64 %b, 4294967295
%d = add i64 %c, 1
ret i64 %d
}