[llvm] r192440 - [ARM] Add a test case for disabled neon/fpu features.

[Amara Emerson]

Author: aemerson
Date: Fri Oct 11 06:07:00 2013
New Revision: 192440

URL: http://llvm.org/viewvc/llvm-project?rev=192440&view=rev
Log:
[ARM] Add a test case for disabled neon/fpu features.

Added:
    llvm/trunk/test/CodeGen/ARM/no-fpu.ll

Added: llvm/trunk/test/CodeGen/ARM/no-fpu.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/ARM/no-fpu.ll?rev=192440&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/ARM/no-fpu.ll (added)
+++ llvm/trunk/test/CodeGen/ARM/no-fpu.ll Fri Oct 11 06:07:00 2013
@@ -0,0 +1,33 @@
+; RUN: llc < %s -mtriple=armv7-none-gnueabi -mattr=-neon,-vfp2 | FileCheck --check-prefix=NONEON-NOVFP %s
+; RUN: llc < %s -mtriple=armv7-none-gnueabi -mattr=-neon | FileCheck --check-prefix=NONEON %s
+; RUN: llc < %s -mtriple=armv7-none-gnueabi -mattr=-vfp2 | FileCheck --check-prefix=NOVFP %s
+; RUN: llc < %s -mtriple=armv7-none-gnueabi -mattr=-neon,+vfp2 | FileCheck --check-prefix=NONEON-VFP %s
+
+; Check no NEON instructions are selected when feature is disabled.
+define void @neonop(i64* nocapture readonly %a, i64* nocapture %b) #0 {
+  %1 = bitcast i64* %a to <2 x i64>*
+  %wide.load = load <2 x i64>* %1, align 8
+  ; NONEON-NOVFP-NOT: vld1.64
+  ; NONEON-NOT: vld1.64
+  %add = add <2 x i64> %wide.load, %wide.load
+  ; NONEON-NOVFP-NOT: vadd.i64
+  ; NONEON-NOT: vadd.i64
+  %2 = bitcast i64* %b to <2 x i64>*
+  store <2 x i64> %add, <2 x i64>* %2, align 8
+  ; NONEON-NOVFP-NOT: vst1.64
+  ; NONEON-NOT: vst1.64
+  ret void
+}
+
+; Likewise with VFP instructions.
+define double @fpmult(double %a, double %b) {
+  %res = fmul double %a, %b
+  ; NONEON-NOVFP-NOT: vmov
+  ; NONEON-NOVFP-NOT: vmul.f64
+  ; NOVFP-NOT: vmov
+  ; NOVFP-NOT: vmul.f64
+  ; NONEON-VFP: vmov
+  ; NONEON-VFP: vmul.f64
+  ret double %res
+}
+