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AArch64: add test for NZCV cross-copy save.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209665 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tim Northover 2014-05-27 16:50:09 +00:00
parent be5c8baeb6
commit fb26356bed
1 changed files with 18 additions and 0 deletions
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18
test/CodeGen/AArch64/nzcv-save.ll Normal file
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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
}