[llvm] r223792 - [PowerPC 4/4] Enable little-endian support for VSX.

[Bill Schmidt]

Author: wschmidt
Date: Tue Dec  9 10:59:57 2014
New Revision: 223792

URL: http://llvm.org/viewvc/llvm-project?rev=223792&view=rev
Log:
[PowerPC 4/4] Enable little-endian support for VSX.

With the foregoing three patches, VSX instructions can be used for
little endian.  This patch removes the restriction that prevented
this, and re-enables the test cases from the first three patches.




Modified:
    llvm/trunk/lib/Target/PowerPC/PPCSubtarget.cpp
    llvm/trunk/test/CodeGen/PowerPC/vsx-ldst-builtin-le.ll
    llvm/trunk/test/CodeGen/PowerPC/vsx-ldst.ll
    llvm/trunk/test/CodeGen/PowerPC/vsx_insert_extract_le.ll
    llvm/trunk/test/CodeGen/PowerPC/vsx_shuffle_le.ll

Modified: llvm/trunk/lib/Target/PowerPC/PPCSubtarget.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/PowerPC/PPCSubtarget.cpp?rev=223792&r1=223791&r2=223792&view=diff
==============================================================================
--- llvm/trunk/lib/Target/PowerPC/PPCSubtarget.cpp (original)
+++ llvm/trunk/lib/Target/PowerPC/PPCSubtarget.cpp Tue Dec  9 10:59:57 2014
@@ -154,13 +154,6 @@ void PPCSubtarget::initSubtargetFeatures
   // Determine endianness.
   IsLittleEndian = (TargetTriple.getArch() == Triple::ppc64le);
 
-  // FIXME: For now, we disable VSX in little-endian mode until endian
-  // issues in those instructions can be addressed.
-  if (IsLittleEndian) {
-    HasVSX = false;
-    HasP8Vector = false;
-  }
-
   // Determine default ABI.
   if (TargetABI == PPC_ABI_UNKNOWN) {
     if (!isDarwin() && IsPPC64) {

Modified: llvm/trunk/test/CodeGen/PowerPC/vsx-ldst-builtin-le.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/PowerPC/vsx-ldst-builtin-le.ll?rev=223792&r1=223791&r2=223792&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/PowerPC/vsx-ldst-builtin-le.ll (original)
+++ llvm/trunk/test/CodeGen/PowerPC/vsx-ldst-builtin-le.ll Tue Dec  9 10:59:57 2014
@@ -1,13 +1,7 @@
-;; Note: This test case disable VSX until LE support is enabled, as
-;; otherwise we fail trying to deal with the @llvm.ppc.vsx.* builtins
-;; for loads and stores.
-; RUN: llc -mcpu=pwr8 -O2 -mtriple=powerpc64-unknown-linux-gnu < %s
-;; FIXME: Delete this and above lines when VSX LE support enabled.
-
-; R;UN: llc -mcpu=pwr8 -mattr=+vsx -O2 -mtriple=powerpc64le-unknown-linux-gnu < %s > %t
-; R;UN: grep lxvd2x < %t | count 18
-; R;UN: grep stxvd2x < %t | count 18
-; R;UN: grep xxpermdi < %t | count 36
+; RUN: llc -mcpu=pwr8 -mattr=+vsx -O2 -mtriple=powerpc64le-unknown-linux-gnu < %s > %t
+; RUN: grep lxvd2x < %t | count 18
+; RUN: grep stxvd2x < %t | count 18
+; RUN: grep xxpermdi < %t | count 36
 
 @vf = global <4 x float> <float -1.500000e+00, float 2.500000e+00, float -3.500000e+00, float 4.500000e+00>, align 16
 @vd = global <2 x double> <double 3.500000e+00, double -7.500000e+00>, align 16

Modified: llvm/trunk/test/CodeGen/PowerPC/vsx-ldst.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/PowerPC/vsx-ldst.ll?rev=223792&r1=223791&r2=223792&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/PowerPC/vsx-ldst.ll (original)
+++ llvm/trunk/test/CodeGen/PowerPC/vsx-ldst.ll Tue Dec  9 10:59:57 2014
@@ -9,13 +9,10 @@
 ; RUN: grep stxvw4x < %t | count 3
 ; RUN: grep stxvd2x < %t | count 3
 
-;; Note: The LE test variant is disabled until LE support for VSX is enabled,
-;; as otherwise we fail to get the expected counts.
-
-; R;UN: llc -mcpu=pwr8 -mattr=+vsx -O2 -mtriple=powerpc64le-unknown-linux-gnu < %s > %t
-; R;UN: grep lxvd2x < %t | count 6
-; R;UN: grep stxvd2x < %t | count 6
-; R;UN: grep xxpermdi < %t | count 12
+; RUN: llc -mcpu=pwr8 -mattr=+vsx -O2 -mtriple=powerpc64le-unknown-linux-gnu < %s > %t
+; RUN: grep lxvd2x < %t | count 6
+; RUN: grep stxvd2x < %t | count 6
+; RUN: grep xxpermdi < %t | count 12
 
 @vsi = global <4 x i32> <i32 -1, i32 2, i32 -3, i32 4>, align 16
 @vui = global <4 x i32> <i32 0, i32 1, i32 2, i32 3>, align 16

Modified: llvm/trunk/test/CodeGen/PowerPC/vsx_insert_extract_le.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/PowerPC/vsx_insert_extract_le.ll?rev=223792&r1=223791&r2=223792&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/PowerPC/vsx_insert_extract_le.ll (original)
+++ llvm/trunk/test/CodeGen/PowerPC/vsx_insert_extract_le.ll Tue Dec  9 10:59:57 2014
@@ -1,9 +1,4 @@
-; Note: This test is disabled until VSX is enabled for LE, as otherwise
-; we don't get the correct code gen.
-; RUN: llc -mcpu=pwr8 -mtriple=powerpc64-unknown-linux-gnu < %s
-; FIXME: Remove this and all above lines when VSX is enabled for LE.
-
-; R;UN: llc -mcpu=pwr8 -mattr=+vsx -mtriple=powerpc64le-unknown-linux-gnu < %s | FileCheck %s
+; RUN: llc -mcpu=pwr8 -mattr=+vsx -mtriple=powerpc64le-unknown-linux-gnu < %s | FileCheck %s
 
 define <2 x double> @testi0(<2 x double>* %p1, double* %p2) {
   %v = load <2 x double>* %p1

Modified: llvm/trunk/test/CodeGen/PowerPC/vsx_shuffle_le.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/PowerPC/vsx_shuffle_le.ll?rev=223792&r1=223791&r2=223792&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/PowerPC/vsx_shuffle_le.ll (original)
+++ llvm/trunk/test/CodeGen/PowerPC/vsx_shuffle_le.ll Tue Dec  9 10:59:57 2014
@@ -1,9 +1,4 @@
-; Note: This test is disabled until VSX is enabled for LE, as otherwise
-; we don't get the correct code gen.
-; RUN: llc -mcpu=pwr8 -mtriple=powerpc64-unknown-linux-gnu < %s
-; FIXME: Remove this and all above lines when VSX is enabled for LE.
-
-; R;UN: llc -mcpu=pwr8 -mattr=+vsx -mtriple=powerpc64le-unknown-linux-gnu < %s | FileCheck %s
+; RUN: llc -mcpu=pwr8 -mattr=+vsx -mtriple=powerpc64le-unknown-linux-gnu < %s | FileCheck %s
 
 define <2 x double> @test00(<2 x double>* %p1, <2 x double>* %p2) {
   %v1 = load <2 x double>* %p1