Check in LLVM r95781.

1 files changed, 85 insertions, 0 deletions

diff --git a/test/CodeGen/X86/vshift-4.ll b/test/CodeGen/X86/vshift-4.ll
new file mode 100644
index 0000000..9773cbe
--- /dev/null
+++ b/test/CodeGen/X86/vshift-4.ll
@@ -0,0 +1,85 @@
+; RUN: llc < %s -march=x86 -mattr=+sse2 -disable-mmx | FileCheck %s
+
+; test vector shifts converted to proper SSE2 vector shifts when the shift
+; amounts are the same when using a shuffle splat.
+
+define void @shift1a(<2 x i64> %val, <2 x i64>* %dst, <2 x i64> %sh) nounwind {
+entry:
+; CHECK: shift1a:
+; CHECK: psllq
+  %shamt = shufflevector <2 x i64> %sh, <2 x i64> undef, <2 x i32> <i32 0, i32 0>
+  %shl = shl <2 x i64> %val, %shamt
+  store <2 x i64> %shl, <2 x i64>* %dst
+  ret void
+}
+
+; shift1b can't use a packed shift
+define void @shift1b(<2 x i64> %val, <2 x i64>* %dst, <2 x i64> %sh) nounwind {
+entry:
+; CHECK: shift1b:
+; CHECK: shll
+  %shamt = shufflevector <2 x i64> %sh, <2 x i64> undef, <2 x i32> <i32 0, i32 1>
+  %shl = shl <2 x i64> %val, %shamt
+  store <2 x i64> %shl, <2 x i64>* %dst
+  ret void
+}
+
+define void @shift2a(<4 x i32> %val, <4 x i32>* %dst, <2 x i32> %amt) nounwind {
+entry:
+; CHECK: shift2a:
+; CHECK: pslld
+  %shamt = shufflevector <2 x i32> %amt, <2 x i32> undef, <4 x i32> <i32 1, i32 1, i32 1, i32 1>
+  %shl = shl <4 x i32> %val, %shamt
+  store <4 x i32> %shl, <4 x i32>* %dst
+  ret void
+}
+
+define void @shift2b(<4 x i32> %val, <4 x i32>* %dst, <2 x i32> %amt) nounwind {
+entry:
+; CHECK: shift2b:
+; CHECK: pslld
+  %shamt = shufflevector <2 x i32> %amt, <2 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 1, i32 1>
+  %shl = shl <4 x i32> %val, %shamt
+  store <4 x i32> %shl, <4 x i32>* %dst
+  ret void
+}
+
+define void @shift2c(<4 x i32> %val, <4 x i32>* %dst, <2 x i32> %amt) nounwind {
+entry:
+; CHECK: shift2c:
+; CHECK: pslld
+  %shamt = shufflevector <2 x i32> %amt, <2 x i32> undef, <4 x i32> <i32 1, i32 1, i32 1, i32 1>
+  %shl = shl <4 x i32> %val, %shamt
+  store <4 x i32> %shl, <4 x i32>* %dst
+  ret void
+}
+
+define void @shift3a(<8 x i16> %val, <8 x i16>* %dst, <8 x i16> %amt) nounwind {
+entry:
+; CHECK: shift3a:
+; CHECK: movzwl
+; CHECK: psllw
+  %shamt = shufflevector <8 x i16> %amt, <8 x i16> undef, <8 x i32> <i32 6, i32 6, i32 6, i32 6, i32 6, i32 6, i32 6, i32 6>
+  %shl = shl <8 x i16> %val, %shamt
+  store <8 x i16> %shl, <8 x i16>* %dst
+  ret void
+}
+
+define void @shift3b(<8 x i16> %val, <8 x i16>* %dst, i16 %amt) nounwind {
+entry:
+; CHECK: shift3b:
+; CHECK: movzwl
+; CHECK: psllw
+  %0 = insertelement <8 x i16> undef, i16 %amt, i32 0
+  %1 = insertelement <8 x i16> %0, i16 %amt, i32 1
+  %2 = insertelement <8 x i16> %0, i16 %amt, i32 2
+  %3 = insertelement <8 x i16> %0, i16 %amt, i32 3
+  %4 = insertelement <8 x i16> %0, i16 %amt, i32 4
+  %5 = insertelement <8 x i16> %0, i16 %amt, i32 5
+  %6 = insertelement <8 x i16> %0, i16 %amt, i32 6
+  %7 = insertelement <8 x i16> %0, i16 %amt, i32 7
+  %shl = shl <8 x i16> %val, %7
+  store <8 x i16> %shl, <8 x i16>* %dst
+  ret void
+}
+