Enable predication of NEON instructions in Thumb2 mode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89748 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 29 insertions, 0 deletions

diff --git a/test/CodeGen/Thumb2/ifcvt-neon.ll b/test/CodeGen/Thumb2/ifcvt-neon.ll
new file mode 100644
index 0000000..c667909
--- /dev/null
+++ b/test/CodeGen/Thumb2/ifcvt-neon.ll
@@ -0,0 +1,29 @@
+; RUN: llc < %s -march=thumb -mcpu=cortex-a8 | FileCheck %s
+; rdar://7368193
+
+@a = common global float 0.000000e+00             ; <float*> [#uses=2]
+@b = common global float 0.000000e+00             ; <float*> [#uses=1]
+
+define arm_apcscc float @t(i32 %c) nounwind {
+entry:
+  %0 = icmp sgt i32 %c, 1                         ; <i1> [#uses=1]
+  %1 = load float* @a, align 4                    ; <float> [#uses=2]
+  %2 = load float* @b, align 4                    ; <float> [#uses=2]
+  br i1 %0, label %bb, label %bb1
+
+bb:                                               ; preds = %entry
+; CHECK:      ite lt
+; CHECK:      vsublt.f32
+; CHECK-NEXT: vaddge.f32
+  %3 = fadd float %1, %2                          ; <float> [#uses=1]
+  br label %bb2
+
+bb1:                                              ; preds = %entry
+  %4 = fsub float %1, %2                          ; <float> [#uses=1]
+  br label %bb2
+
+bb2:                                              ; preds = %bb1, %bb
+  %storemerge = phi float [ %4, %bb1 ], [ %3, %bb ] ; <float> [#uses=2]
+  store float %storemerge, float* @a
+  ret float %storemerge
+}