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[AArch64] Add a testcase for r214957.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214965 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
James Molloy 2014-08-06 13:31:32 +00:00
parent 2d98881b40
commit e0243fb42d
2 changed files with 19 additions and 1 deletions
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9
lib/Target/AArch64/AArch64TargetMachine.cpp
View File

@ -59,6 +59,12 @@ EnableAtomicTidy("aarch64-atomic-cfg-tidy", cl::Hidden,
" to make use of cmpxchg flow-based information"),
cl::init(true));
static cl::opt<bool>
EnableEarlyIfConversion("aarch64-enable-early-ifcvt", cl::Hidden,
cl::desc("Run early if-conversion"),
cl::init(true));
extern "C" void LLVMInitializeAArch64Target() {
// Register the target.
RegisterTargetMachine<AArch64leTargetMachine> X(TheAArch64leTarget);
@ -174,7 +180,8 @@ bool AArch64PassConfig::addInstSelector() {
bool AArch64PassConfig::addILPOpts() {
if (EnableCCMP)
addPass(createAArch64ConditionalCompares());
addPass(&EarlyIfConverterID);
if (EnableEarlyIfConversion)
addPass(&EarlyIfConverterID);
if (EnableStPairSuppress)
addPass(createAArch64StorePairSuppressPass());
return true;

11
test/CodeGen/AArch64/a57-csel.ll Normal file
View File

@ -0,0 +1,11 @@
; RUN: llc -mtriple=aarch64-none-linux-gnu < %s -mcpu=cortex-a57 -aarch64-enable-early-ifcvt=false | FileCheck %s
; Check that the select is expanded into a branch sequence.
define i64 @f(i64 %a, i64 %b, i64* %c, i64 %d, i64 %e) {
; CHECK: cbz
%x0 = load i64* %c
%x1 = icmp eq i64 %x0, 0
%x2 = select i1 %x1, i64 %a, i64 %b
%x3 = add i64 %x2, %d
ret i64 %x3
}