[llvm] r225137 - [X86][SSE] Added vector integer truncation tests - based off pr15524

[Simon Pilgrim]

Author: rksimon
Date: Sun Jan  4 11:52:00 2015
New Revision: 225137

URL: http://llvm.org/viewvc/llvm-project?rev=225137&view=rev
Log:
[X86][SSE] Added vector integer truncation tests - based off pr15524


Added:
    llvm/trunk/test/CodeGen/X86/vector-trunc.ll

Added: llvm/trunk/test/CodeGen/X86/vector-trunc.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/vector-trunc.ll?rev=225137&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/X86/vector-trunc.ll (added)
+++ llvm/trunk/test/CodeGen/X86/vector-trunc.ll Sun Jan  4 11:52:00 2015
@@ -0,0 +1,90 @@
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=x86-64 -mattr=+sse2 | FileCheck %s --check-prefix=SSE --check-prefix=SSE2
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=x86-64 -mattr=+ssse3 | FileCheck %s --check-prefix=SSE --check-prefix=SSSE3
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=x86-64 -mattr=+sse4.1 | FileCheck %s --check-prefix=SSE --check-prefix=SSE41
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=x86-64 -mattr=+avx | FileCheck %s --check-prefix=AVX --check-prefix=AVX1
+
+define i64 @trunc2i64(<2 x i64> %inval) {
+; SSE-LABEL:  trunc2i64:
+; SSE:        # BB#0: # %entry
+; SSE-NEXT:   pshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
+; SSE-NEXT:   movd %xmm0, %rax
+; SSE-NEXT:   retq
+
+; AVX-LABEL:  trunc2i64:
+; AVX:        # BB#0: # %entry
+; AVX-NEXT:   vpshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
+; AVX-NEXT:   vmovq %xmm0, %rax
+; AVX-NEXT:   retq
+
+entry:
+  %0 = trunc <2 x i64> %inval to <2 x i32>
+  %1 = bitcast <2 x i32> %0 to i64
+  ret i64 %1
+}
+
+; PR15524 http://llvm.org/bugs/show_bug.cgi?id=15524
+define i64 @trunc4i32(<4 x i32> %inval) {
+; SSE2-LABEL:  trunc4i32:
+; SSE2:        # BB#0: # %entry
+; SSE2-NEXT:   pshuflw {{.*#+}} xmm0 = xmm0[0,2,2,3,4,5,6,7]
+; SSE2-NEXT:   pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,4,6,6,7]
+; SSE2-NEXT:   pshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
+; SSE2-NEXT:   movd %xmm0, %rax
+; SSE2-NEXT:   retq
+
+; SSSE3-LABEL: trunc4i32:
+; SSSE3:       # BB#0: # %entry
+; SSSE3-NEXT:  pshufb {{.*#+}} xmm0 = xmm0[0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15]
+; SSSE3-NEXT:  movd %xmm0, %rax
+; SSSE3-NEXT:  retq
+
+; SSE41-LABEL: trunc4i32:
+; SSE41:       # BB#0: # %entry
+; SSE41-NEXT:  pshufb {{.*#+}} xmm0 = xmm0[0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15]
+; SSE41-NEXT:  movd %xmm0, %rax
+; SSE41-NEXT:  retq
+
+; AVX-LABEL:  trunc4i32:
+; AVX:        # BB#0: # %entry
+; AVX-NEXT:   vpshufb {{.*#+}} xmm0 = xmm0[0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15]
+; AVX-NEXT:   vmovq %xmm0, %rax
+; AVX-NEXT:   retq
+
+entry:
+  %0 = trunc <4 x i32> %inval to <4 x i16>
+  %1 = bitcast <4 x i16> %0 to i64
+  ret i64 %1
+}
+
+; PR15524 http://llvm.org/bugs/show_bug.cgi?id=15524
+define i64 @trunc8i16(<8 x i16> %inval) {
+; SSE2-LABEL:  trunc8i16:
+; SSE2:        # BB#0: # %entry
+; SSE2-NEXT:   pand .LCP{{.*}}(%rip), %xmm0
+; SSE2-NEXT:   packuswb %xmm0, %xmm0
+; SSE2-NEXT:   movd %xmm0, %rax
+; SSE2-NEXT:   retq
+
+; SSSE3-LABEL: trunc8i16:
+; SSSE3:       # BB#0: # %entry
+; SSSE3-NEXT:  pshufb {{.*#+}} xmm0 = xmm0[0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u]
+; SSSE3-NEXT:  movd %xmm0, %rax
+; SSSE3-NEXT:  retq
+
+; SSE41-LABEL: trunc8i16:
+; SSE41:       # BB#0: # %entry
+; SSE41-NEXT:  pshufb {{.*#+}} xmm0 = xmm0[0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u]
+; SSE41-NEXT:  movd %xmm0, %rax
+; SSE41-NEXT:  retq
+
+; AVX-LABEL:  trunc8i16:
+; AVX:        # BB#0: # %entry
+; AVX-NEXT:   vpshufb {{.*#+}} xmm0 = xmm0[0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u]
+; AVX-NEXT:   vmovq %xmm0, %rax
+; AVX-NEXT:   retq
+
+entry:
+  %0 = trunc <8 x i16> %inval to <8 x i8>
+  %1 = bitcast <8 x i8> %0 to i64
+  ret i64 %1
+}