Hexagon: Use TFR_cond with cmpb.[eq,gt,gtu] to handle

         zext( set[ne,eq,gt,ugt] (...) ) type of dag patterns.

llvm-svn: 174429

1 files changed, 92 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/Hexagon/cmpb_pred.ll b/llvm/test/CodeGen/Hexagon/cmpb_pred.ll
new file mode 100644
index 00000000000..1e6144701fe
--- /dev/null
+++ b/llvm/test/CodeGen/Hexagon/cmpb_pred.ll
@@ -0,0 +1,92 @@
+; RUN: llc -march=hexagon -mcpu=hexagonv5  < %s | FileCheck %s
+; Generate various cmpb instruction followed by if (p0) .. if (!p0)...
+target triple = "hexagon"
+
+@Enum_global = external global i8
+
+define i32 @Func_3(i32) nounwind readnone {
+entry:
+; CHECK-NOT: mux
+  %conv = and i32 %0, 255
+  %cmp = icmp eq i32 %conv, 2
+  %selv = zext i1 %cmp to i32
+  ret i32 %selv
+}
+
+define i32 @Func_3b(i32) nounwind readonly {
+entry:
+; CHECK-NOT: mux
+  %1 = load i8* @Enum_global, align 1, !tbaa !0
+  %2 = trunc i32 %0 to i8
+  %cmp = icmp ne i8 %1, %2
+  %selv = zext i1 %cmp to i32
+  ret i32 %selv
+}
+
+define i32 @Func_3c(i32) nounwind readnone {
+entry:
+; CHECK-NOT: mux
+  %conv = and i32 %0, 255
+  %cmp = icmp eq i32 %conv, 2
+  %selv = zext i1 %cmp to i32
+  ret i32 %selv
+}
+
+define i32 @Func_3d(i32) nounwind readonly {
+entry:
+; CHECK-NOT: mux
+  %1 = load i8* @Enum_global, align 1, !tbaa !0
+  %2 = trunc i32 %0 to i8
+  %cmp = icmp eq i8 %1, %2
+  %selv = zext i1 %cmp to i32
+  ret i32 %selv
+}
+
+define i32 @Func_3e(i32) nounwind readonly {
+entry:
+; CHECK-NOT: mux
+  %1 = load i8* @Enum_global, align 1, !tbaa !0
+  %2 = trunc i32 %0 to i8
+  %cmp = icmp eq i8 %1, %2
+  %selv = zext i1 %cmp to i32
+  ret i32 %selv
+}
+
+define i32 @Func_3f(i32) nounwind readnone {
+entry:
+; CHECK-NOT: mux
+  %conv = and i32 %0, 255
+  %cmp = icmp ugt i32 %conv, 2
+  %selv = zext i1 %cmp to i32
+  ret i32 %selv
+}
+
+define i32 @Func_3g(i32) nounwind readnone {
+entry:
+; CHECK: mux
+  %conv = and i32 %0, 255
+  %cmp = icmp ult i32 %conv, 3
+  %selv = zext i1 %cmp to i32
+  ret i32 %selv
+}
+
+define i32 @Func_3h(i32) nounwind readnone {
+entry:
+; CHECK-NOT: mux
+  %conv = and i32 %0, 254
+  %cmp = icmp ult i32 %conv, 2
+  %selv = zext i1 %cmp to i32
+  ret i32 %selv
+}
+
+define i32 @Func_3i(i32) nounwind readnone {
+entry:
+; CHECK-NOT: mux
+  %conv = and i32 %0, 254
+  %cmp = icmp ugt i32 %conv, 1
+  %selv = zext i1 %cmp to i32
+  ret i32 %selv
+}
+
+!0 = metadata !{metadata !"omnipotent char", metadata !1}
+!1 = metadata !{metadata !"Simple C/C++ TBAA"}