1 files changed, 14 insertions, 0 deletions
diff --git a/test/CodeGen/NVPTX/ldu-i8.ll b/test/CodeGen/NVPTX/ldu-i8.ll
new file mode 100644
index 0000000000..81a82b2c38
--- /dev/null
+++ b/test/CodeGen/NVPTX/ldu-i8.ll
@@ -0,0 +1,14 @@
+; RUN: llc < %s -march=nvptx -mcpu=sm_20 | FileCheck %s
+
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v16:16:16-v32:32:32-v64:64:64-v128:128:128-n16:32:64"
+
+declare i8 @llvm.nvvm.ldu.global.i.i8(i8*)
+
+define i8 @foo(i8* %a) {
+; Ensure we properly truncate off the high-order 24 bits
+; CHECK:        ldu.global.u8
+; CHECK:        cvt.u32.u16
+; CHECK:        and.b32         %r{{[0-9]+}}, %r{{[0-9]+}}, 255
+  %val = tail call i8 @llvm.nvvm.ldu.global.i.i8(i8* %a)
+  ret i8 %val
+}