[FastISel][X86] - Add branch weights

[oota-llvm.git] / test / CodeGen / X86 / fast-isel-branch_weights.ll

diff --git a/test/CodeGen/X86/fast-isel-branch_weights.ll b/test/CodeGen/X86/fast-isel-branch_weights.ll
new file mode 100644 (file)
index 0000000..bc41395
--- /dev/null
+++ b/test/CodeGen/X86/fast-isel-branch_weights.ll
@@ -0,0 +1,19 @@
+; RUN: llc < %s                             -mtriple=x86_64-apple-darwin10 | FileCheck %s
+; RUN: llc < %s -fast-isel -fast-isel-abort -mtriple=x86_64-apple-darwin10 | FileCheck %s
+
+; Test if the BBs are reordred according to their branch weights.
+define i64 @branch_weights_test(i64 %a, i64 %b) {
+; CHECK-LABEL: branch_weights_test
+; CHECK-LABEL: success
+; CHECK-LABEL: fail
+  %1 = icmp ult i64 %a, %b
+  br i1 %1, label %fail, label %success, !prof !0
+
+fail:
+  ret i64 -1
+
+success:
+  ret i64 0
+}
+
+!0 = metadata !{metadata !"branch_weights", i32 0, i32 2147483647}