Use fconsts and fconstd to materialize small fp constants.

llvm-svn: 85362

1 files changed, 33 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/ARM/fpconsts.ll b/llvm/test/CodeGen/ARM/fpconsts.ll
new file mode 100644
index 00000000000..6a3a6d815d8
--- /dev/null
+++ b/llvm/test/CodeGen/ARM/fpconsts.ll
@@ -0,0 +1,33 @@
+; RUN: llc < %s -march=arm -mattr=+vfp3 | FileCheck %s
+
+define arm_apcscc float @t1(float %x) nounwind readnone optsize {
+entry:
+; CHECK: t1:
+; CHECK: fconsts s1, 16
+  %0 = fadd float %x, 4.000000e+00
+  ret float %0
+}
+
+define arm_apcscc double @t2(double %x) nounwind readnone optsize {
+entry:
+; CHECK: t2:
+; CHECK: fconstd d1, 8
+  %0 = fadd double %x, 3.000000e+00
+  ret double %0
+}
+
+define arm_apcscc double @t3(double %x) nounwind readnone optsize {
+entry:
+; CHECK: t3:
+; CHECK: fconstd d1, 170
+  %0 = fmul double %x, -1.300000e+01
+  ret double %0
+}
+
+define arm_apcscc float @t4(float %x) nounwind readnone optsize {
+entry:
+; CHECK: t4:
+; CHECK: fconsts s1, 184
+  %0 = fmul float %x, -2.400000e+01
+  ret float %0
+}