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llvm-mirror/test/Transforms/InstCombine/x86-crc32-demanded.ll
Chad Rosier b87c4a6945 Renamed llvm.x86.sse42.crc32 intrinsics; crc64 doesn't exist.
crc32.[8|16|32] have been renamed to .crc32.32.[8|16|32] and
crc64.[8|16|32] have been renamed to .crc32.64.[8|64].

llvm-svn: 132163
2011-05-26 23:13:19 +00:00

18 lines
435 B
LLVM

; 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
; CHECK: tail call i64 @llvm.x86.sse42.crc32.64.64
; CHECK-NOT: and
; CHECK: ret
%0 = tail call i64 @llvm.x86.sse42.crc32.64.64(i64 0, i64 4) nounwind
%1 = and i64 %0, 4294967295
ret i64 %1
}
declare i64 @llvm.x86.sse42.crc32.64.64(i64, i64) nounwind readnone