vendor/llvm/llvm-trunk-r178860

1 files changed, 21 insertions, 0 deletions

diff --git a/test/CodeGen/X86/fast-isel-expect.ll b/test/CodeGen/X86/fast-isel-expect.ll
new file mode 100644
index 000000000000..c4be7f364f30
--- /dev/null
+++ b/test/CodeGen/X86/fast-isel-expect.ll
@@ -0,0 +1,21 @@
+; RUN: llc < %s -O0 -march=x86 | FileCheck %s
+
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+@glbl = extern_weak constant i8
+
+declare i64 @llvm.expect.i64(i64, i64)
+
+define void @test() {
+; CHECK: movl $glbl
+  %tmp = call i64 @llvm.expect.i64(i64 zext (i1 icmp eq (i8* @glbl, i8* null) to i64), i64 0)
+  %tmp2 = icmp ne i64 %tmp, 0
+  br i1 %tmp2, label %bb1, label %bb2
+
+bb1:
+  unreachable
+
+bb2:
+  unreachable
+}