Add floating-point to and from integer conversion

This patch add altivec support for v4i32 to v4f32 and for v4f32 to
v4i32 vector rounding conversion.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165409 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 57 insertions, 0 deletions

diff --git a/test/CodeGen/PowerPC/vec_conv.ll b/test/CodeGen/PowerPC/vec_conv.ll
new file mode 100644
index 0000000..a475e94
--- /dev/null
+++ b/test/CodeGen/PowerPC/vec_conv.ll
@@ -0,0 +1,57 @@
+; RUN: llc -mattr=+altivec < %s | FileCheck %s
+
+; Check vector float/int conversion using altivec.
+
+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-v128:128:128-n32:64"
+target triple = "powerpc64-unknown-linux-gnu"
+
+@cte_float = global <4 x float> <float 6.5e+00, float 6.5e+00, float 6.5e+00, float 6.5e+00>, align 16
+@cte_int = global <4 x i32> <i32 6, i32 6, i32 6, i32 6>, align 16
+
+
+define void @v4f32_to_v4i32(<4 x float> %x, <4 x i32>* nocapture %y) nounwind {
+entry:
+  %0 = load <4 x float>* @cte_float, align 16
+  %mul = fmul <4 x float> %0, %x
+  %1 = fptosi <4 x float> %mul to <4 x i32>
+  store <4 x i32> %1, <4 x i32>* %y, align 16
+  ret void
+}
+;CHECK: v4f32_to_v4i32:
+;CHECK: vctsxs {{[0-9]+}}, {{[0-9]+}}, 0
+
+
+define void @v4f32_to_v4u32(<4 x float> %x, <4 x i32>* nocapture %y) nounwind {
+entry:
+  %0 = load <4 x float>* @cte_float, align 16
+  %mul = fmul <4 x float> %0, %x
+  %1 = fptoui <4 x float> %mul to <4 x i32>
+  store <4 x i32> %1, <4 x i32>* %y, align 16
+  ret void
+}
+;CHECK: v4f32_to_v4u32:
+;CHECK: vctuxs {{[0-9]+}}, {{[0-9]+}}, 0
+
+
+define void @v4i32_to_v4f32(<4 x i32> %x, <4 x float>* nocapture %y) nounwind {
+entry:
+  %0 = load <4 x i32>* @cte_int, align 16
+  %mul = mul <4 x i32> %0, %x
+  %1 = sitofp <4 x i32> %mul to <4 x float>
+  store <4 x float> %1, <4 x float>* %y, align 16
+  ret void
+}
+;CHECK: v4i32_to_v4f32:
+;CHECK: vcfsx {{[0-9]+}}, {{[0-9]+}}, 0
+
+
+define void @v4u32_to_v4f32(<4 x i32> %x, <4 x float>* nocapture %y) nounwind {
+entry:
+  %0 = load <4 x i32>* @cte_int, align 16
+  %mul = mul <4 x i32> %0, %x
+  %1 = uitofp <4 x i32> %mul to <4 x float>
+  store <4 x float> %1, <4 x float>* %y, align 16
+  ret void
+}
+;CHECK: v4u32_to_v4f32:
+;CHECK: vcfux {{[0-9]+}}, {{[0-9]+}}, 0