add masked intrinsic tests to show missed opportunities

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@259083 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/InstCombine/masked_intrinsics.ll b/test/Transforms/InstCombine/masked_intrinsics.ll
new file mode 100644 (file)
index 0000000..a0330e8
--- /dev/null
+++ b/test/Transforms/InstCombine/masked_intrinsics.ll
@@ -0,0 +1,41 @@
+; RUN: opt -instcombine -S < %s | FileCheck %s
+
+declare <2 x double> @llvm.masked.load.v2f64(<2 x double>* %ptrs, i32, <2 x i1> %mask, <2 x double> %src0)
+
+; FIXME: All of these could be simplified.
+
+define <2 x double> @load_zeromask(<2 x double>* %ptr, <2 x double> %passthru)  {
+  %res = call <2 x double> @llvm.masked.load.v2f64(<2 x double>* %ptr, i32 1, <2 x i1> zeroinitializer, <2 x double> %passthru)
+  ret <2 x double> %res
+
+; CHECK-LABEL: @load_zeromask(
+; CHECK-NEXT:  %res = call <2 x double> @llvm.masked.load.v2f64(<2 x double>* %ptr, i32 1, <2 x i1> zeroinitializer, <2 x double> %passthru)
+; CHECK-NEXT   ret <2 x double> %res
+}
+
+define <2 x double> @load_onemask(<2 x double>* %ptr, <2 x double> %passthru)  {
+  %res = call <2 x double> @llvm.masked.load.v2f64(<2 x double>* %ptr, i32 2, <2 x i1> <i1 1, i1 1>, <2 x double> %passthru)
+  ret <2 x double> %res
+
+; CHECK-LABEL: @load_onemask(
+; CHECK-NEXT:  %res = call <2 x double> @llvm.masked.load.v2f64(<2 x double>* %ptr, i32 2, <2 x i1> <i1 true, i1 true>, <2 x double> %passthru)
+; CHECK-NEXT   ret <2 x double> %res
+}
+
+define <2 x double> @load_onesetbitmask1(<2 x double>* %ptr, <2 x double> %passthru)  {
+  %res = call <2 x double> @llvm.masked.load.v2f64(<2 x double>* %ptr, i32 3, <2 x i1> <i1 0, i1 1>, <2 x double> %passthru)
+  ret <2 x double> %res
+
+; CHECK-LABEL: @load_onesetbitmask1(
+; CHECK-NEXT:  %res = call <2 x double> @llvm.masked.load.v2f64(<2 x double>* %ptr, i32 3, <2 x i1> <i1 false, i1 true>, <2 x double> %passthru)
+; CHECK-NEXT   ret <2 x double> %res
+}
+
+define <2 x double> @load_onesetbitmask2(<2 x double>* %ptr, <2 x double> %passthru)  {
+  %res = call <2 x double> @llvm.masked.load.v2f64(<2 x double>* %ptr, i32 4, <2 x i1> <i1 1, i1 0>, <2 x double> %passthru)
+  ret <2 x double> %res
+
+; CHECK-LABEL: @load_onesetbitmask2(
+; CHECK-NEXT:  %res = call <2 x double> @llvm.masked.load.v2f64(<2 x double>* %ptr, i32 4, <2 x i1> <i1 true, i1 false>, <2 x double> %passthru)
+; CHECK-NEXT   ret <2 x double> %res
+}