AArch64: add test for NZCV cross-copy save.

llvm-svn: 209665
This commit is contained in:
Tim Northover 2014-05-27 16:50:09 +00:00
parent de9402d345
commit 9a6217b650
1 changed files with 18 additions and 0 deletions
llvm/test/CodeGen/AArch64

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; RUN: llc -march=aarch64 < %s | FileCheck %s
; CHECK: mrs [[NZCV_SAVE:x[0-9]+]], NZCV
; CHECK: msr NZCV, [[NZCV_SAVE]]
; DAG ends up with two uses for the flags from an ADCS node, which means they
; must be saved for later.
define void @f(i256* nocapture %a, i256* nocapture %b, i256* nocapture %cc, i256* nocapture %dd) nounwind uwtable noinline ssp {
entry:
%c = load i256* %cc
%d = load i256* %dd
%add = add nsw i256 %c, %d
store i256 %add, i256* %a, align 8
%or = or i256 %c, 1606938044258990275541962092341162602522202993782792835301376
%add6 = add nsw i256 %or, %d
store i256 %add6, i256* %b, align 8
ret void
}