2011-05-20 02:54:37 +02:00
|
|
|
; RUN: opt < %s -instcombine -S | FileCheck %s
|
|
|
|
|
|
|
|
|
|
; crc32 with 64-bit destination zeros high 32-bit.
|
|
|
|
|
; rdar://9467055
|
|
|
|
|
|
|
|
|
|
define i64 @test() nounwind {
|
|
|
|
|
entry:
|
|
|
|
|
; CHECK: test
|
2011-05-27 01:13:19 +02:00
|
|
|
; CHECK: tail call i64 @llvm.x86.sse42.crc32.64.64
|
2011-05-20 02:54:37 +02:00
|
|
|
; CHECK-NOT: and
|
|
|
|
|
; CHECK: ret
|
2011-05-27 01:13:19 +02:00
|
|
|
%0 = tail call i64 @llvm.x86.sse42.crc32.64.64(i64 0, i64 4) nounwind
|
2011-05-20 02:54:37 +02:00
|
|
|
%1 = and i64 %0, 4294967295
|
|
|
|
|
ret i64 %1
|
|
|
|
|
}
|
|
|
|
|
|
2011-05-27 01:13:19 +02:00
|
|
|
declare i64 @llvm.x86.sse42.crc32.64.64(i64, i64) nounwind readnone
|
