Add preliminary v2i32 support for SPU backend. As there are no

such registers in SPU, this support boils down to "emulating" 
them by duplicating instructions on the general purpose registers. 

This adds the most basic operations on v2i32: passing parameters,
addition, subtraction, multiplication and a few others.

llvm-svn: 110035

1 files changed, 57 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/CellSPU/v2i32.ll b/llvm/test/CodeGen/CellSPU/v2i32.ll
new file mode 100644
index 00000000000..be3822a8d0c
--- /dev/null
+++ b/llvm/test/CodeGen/CellSPU/v2i32.ll
@@ -0,0 +1,57 @@
+;RUN: llc --march=cellspu %s -o - | FileCheck %s
+%vec = type <2 x i32>
+
+define %vec @test_ret(%vec %param)
+{
+;CHECK:	bi	$lr
+  ret %vec %param
+}
+
+define %vec @test_add(%vec %param)
+{
+;CHECK: a $3, $3, $3
+  %1 = add %vec %param, %param
+;CHECK: bi $lr
+  ret %vec %1
+}
+
+define %vec @test_sub(%vec %param)
+{
+;CHECK: sf $3, $4, $3
+  %1 = sub %vec %param, <i32 1, i32 1>
+
+;CHECK: bi $lr
+  ret %vec %1
+}
+
+define %vec @test_mul(%vec %param)
+{
+;CHECK: mpyu
+;CHECK: mpyh
+;CHECK: a
+;CHECK: a $3
+  %1 = mul %vec %param, %param
+
+;CHECK: bi $lr
+  ret %vec %1
+}
+
+define <2 x i32> @test_splat(i32 %param ) {
+;TODO insertelement transforms to a PREFSLOT2VEC, that trasforms to the 
+;     somewhat redundant: 
+;CHECK-NOT or $3, $3, $3
+;CHECK: lqa
+;CHECK: shufb
+  %sv = insertelement <1 x i32> undef, i32 %param, i32 0 
+  %rv = shufflevector <1 x i32> %sv, <1 x i32> undef, <2 x i32> zeroinitializer 
+;CHECK: bi $lr
+  ret <2 x i32> %rv
+}
+
+define i32 @test_extract() {
+;CHECK: shufb $3
+  %rv = extractelement <2 x i32> zeroinitializer, i32 undef ; <i32> [#uses=1]
+;CHECK: bi $lr
+  ret i32 %rv
+}
+