[NVPTX] Use ABI alignment for parameters when alignment is not specified.

Affects SM 2.0+.  Fixes bug 13324.

llvm-svn: 167646

1 files changed, 25 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/NVPTX/param-align.ll b/llvm/test/CodeGen/NVPTX/param-align.ll
new file mode 100644
index 00000000000..84ccb650d40
--- /dev/null
+++ b/llvm/test/CodeGen/NVPTX/param-align.ll
@@ -0,0 +1,25 @@
+; RUN: llc < %s -march=nvptx -mcpu=sm_20 | FileCheck %s
+
+;;; Need 4-byte alignment on float* passed byval
+define ptx_device void @t1(float* byval %x) {
+; CHECK: .func t1
+; CHECK: .param .align 4 .b8 t1_param_0[4]
+  ret void
+}
+
+
+;;; Need 8-byte alignment on double* passed byval
+define ptx_device void @t2(double* byval %x) {
+; CHECK: .func t2
+; CHECK: .param .align 8 .b8 t2_param_0[8]
+  ret void
+}
+
+
+;;; Need 4-byte alignment on float2* passed byval
+%struct.float2 = type { float, float }
+define ptx_device void @t3(%struct.float2* byval %x) {
+; CHECK: .func t3
+; CHECK: .param .align 4 .b8 t3_param_0[8]
+  ret void
+}