llvm-mirror/test/CodeGen/AArch64/eon.ll
Chad Rosier 69ba87e018 [AArch64] Change EON pattern to match more often.
Phabricator: http://reviews.llvm.org/D11359
Patch by Geoff Berry <gberry@codeaurora.org>

llvm-svn: 242694
2015-07-20 18:42:27 +00:00

30 lines
637 B
LLVM

; RUN: llc -mtriple=aarch64-none-linux-gnu < %s | FileCheck %s
; Check that the eon instruction is generated instead of eor,movn
define i64 @test1(i64 %a, i64 %b, i64 %c) {
; CHECK-LABEL: test1:
; CHECK: eon
; CHECK: ret
entry:
%shl = shl i64 %b, 4
%neg = xor i64 %a, -1
%xor = xor i64 %shl, %neg
ret i64 %xor
}
; Same check with mutliple uses of %neg
define i64 @test2(i64 %a, i64 %b, i64 %c) {
; CHECK-LABEL: test2:
; CHECK: eon
; CHECK: eon
; CHECK: lsl
; CHECK: ret
entry:
%shl = shl i64 %b, 4
%neg = xor i64 %shl, -1
%xor = xor i64 %neg, %a
%xor1 = xor i64 %c, %neg
%shl2 = shl i64 %xor, %xor1
ret i64 %shl2
}