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| author | Kevin Qin <Kevin.Qin@arm.com> | 2014-05-06 09:48:52 +0000 |
|---|---|---|
| committer | Kevin Qin <Kevin.Qin@arm.com> | 2014-05-06 09:48:52 +0000 |
| commit | 1353c3405dfad371a87144edbff2abe38ae24e07 (patch) | |
| tree | 87333272146c18ff3149d3637609a3ca82cb53cf /llvm | |
| parent | 1b5fd3e52a6a42e007dbd16f6c37f1ce3e1f1f30 (diff) | |
| download | bcm5719-llvm-1353c3405dfad371a87144edbff2abe38ae24e07.tar.gz bcm5719-llvm-1353c3405dfad371a87144edbff2abe38ae24e07.zip | |
[ARM64] Enable alignment control option in front-end for ARM64.
This is the modification in llvm part.
llvm-svn: 208074
Diffstat (limited to 'llvm')
| -rw-r--r-- | llvm/lib/Target/ARM64/ARM64ISelLowering.cpp | 19 | ||||
| -rw-r--r-- | llvm/test/CodeGen/ARM64/strict-align.ll | 1 |
2 files changed, 16 insertions, 4 deletions
diff --git a/llvm/lib/Target/ARM64/ARM64ISelLowering.cpp b/llvm/lib/Target/ARM64/ARM64ISelLowering.cpp index f95308b5c47..7de9d079ed2 100644 --- a/llvm/lib/Target/ARM64/ARM64ISelLowering.cpp +++ b/llvm/lib/Target/ARM64/ARM64ISelLowering.cpp @@ -45,9 +45,20 @@ EnableARM64TailCalls("arm64-tail-calls", cl::Hidden, cl::desc("Generate ARM64 tail calls (TEMPORARY OPTION)."), cl::init(true)); -static cl::opt<bool> -StrictAlign("arm64-strict-align", cl::Hidden, - cl::desc("Disallow all unaligned memory accesses")); +enum AlignMode { + StrictAlign, + NoStrictAlign +}; + +static cl::opt<AlignMode> +Align(cl::desc("Load/store alignment support"), + cl::Hidden, cl::init(NoStrictAlign), + cl::values( + clEnumValN(StrictAlign, "arm64-strict-align", + "Disallow all unaligned memory accesses"), + clEnumValN(NoStrictAlign, "arm64-no-strict-align", + "Allow unaligned memory accesses"), + clEnumValEnd)); // Place holder until extr generation is tested fully. static cl::opt<bool> @@ -370,7 +381,7 @@ ARM64TargetLowering::ARM64TargetLowering(ARM64TargetMachine &TM) setMinFunctionAlignment(2); - RequireStrictAlign = StrictAlign; + RequireStrictAlign = (Align == StrictAlign); setHasExtractBitsInsn(true); diff --git a/llvm/test/CodeGen/ARM64/strict-align.ll b/llvm/test/CodeGen/ARM64/strict-align.ll index 2fbe47ce568..48a1528b5cd 100644 --- a/llvm/test/CodeGen/ARM64/strict-align.ll +++ b/llvm/test/CodeGen/ARM64/strict-align.ll @@ -1,4 +1,5 @@ ; RUN: llc < %s -mtriple=arm64-apple-darwin | FileCheck %s +; RUN: llc < %s -mtriple=arm64-apple-darwin -arm64-no-strict-align | FileCheck %s ; RUN: llc < %s -mtriple=arm64-apple-darwin -arm64-strict-align | FileCheck %s --check-prefix=CHECK-STRICT define i32 @f0(i32* nocapture %p) nounwind { |
