[PPC] Adding the removed testcase again

This testcase was originally part of r284995, but I put it in a wrong directory.
So I removed it. Before adding it back I did some small enhancements. Also I
changed the assertions a little bit, to take into account the impact of some
changes performed since code review is done.

This is similar to changes done for another testcase in the original commit.
See: https://reviews.llvm.org/D23614#577749
Basically for instead of vxor we now generate xxlxor in some cases, which is
better.

llvm-svn: 285333

diff --git a/llvm/test/CodeGen/PowerPC/pzero-fp-xored.ll b/llvm/test/CodeGen/PowerPC/pzero-fp-xored.ll
new file mode 100644 (file)
index 0000000..dc258b8
--- /dev/null
+++ b/llvm/test/CodeGen/PowerPC/pzero-fp-xored.ll
@@ -0,0 +1,71 @@
+; RUN: llc -mtriple=powerpc64le-unknown-linux-gnu -mattr=+vsx -mcpu=pwr8 < %s |  \
+; RUN:   FileCheck %s --implicit-check-not lxvd2x --implicit-check-not lfs
+; RUN: llc -mtriple=powerpc64le-unknown-linux-gnu -mattr=-altivec -mcpu=pwr8 -mattr=-vsx < %s | \
+; RUN:   FileCheck %s --check-prefix=CHECK-NVSXALT --implicit-check-not xxlxor \
+; RUN:                                             --implicit-check-not vxor
+
+define signext i32 @t1(float %x) local_unnamed_addr #0 {
+entry:
+  %cmp = fcmp ogt float %x, 0.000000e+00
+  %tmp = select i1 %cmp, i32 43, i32 11
+  ret i32 %tmp
+
+; CHECK-LABEL: t1:
+; CHECK: xxlxor [[REG1:[0-9]+]], [[REG1]], [[REG1]]
+; CHECK: fcmpu {{[0-9]+}}, {{[0-9]+}}, [[REG1]]
+; CHECK: blr
+; CHECK-NVSXALT: lfs [[REG1:[0-9]+]]
+; CHECK-NVSXALT: fcmpu {{[0-9]+}}, {{[0-9]+}}, [[REG1]]
+; CHECK-NVSXALT: blr
+}
+
+define signext i32 @t2(double %x) local_unnamed_addr #0 {
+entry:
+  %cmp = fcmp ogt double %x, 0.000000e+00
+  %tmp = select i1 %cmp, i32 43, i32 11
+  ret i32 %tmp
+
+; CHECK-LABEL: t2:
+; CHECK: xxlxor [[REG2:[0-9]+]], [[REG2]], [[REG2]]
+; CHECK: xscmpudp {{[0-9]+}}, {{[0-9]+}}, [[REG2]]
+; CHECK: blr
+; CHECK-NVSXALT: lfs [[REG2:[0-9]+]]
+; CHECK-NVSXALT: fcmpu {{[0-9]+}}, {{[0-9]+}}, [[REG2]]
+; CHECK-NVSXALT: blr
+}
+
+define signext i32 @t3(ppc_fp128 %x) local_unnamed_addr #0 {
+entry:
+  %cmp = fcmp ogt ppc_fp128 %x, 0xM00000000000000000000000000000000
+  %tmp = select i1 %cmp, i32 43, i32 11
+  ret i32 %tmp
+
+; CHECK-LABEL: t3:
+; CHECK: xxlxor [[REG3:[0-9]+]], [[REG3]], [[REG3]]
+; CHECK: fcmpu {{[0-9]+}}, {{[0-9]+}}, [[REG3]]
+; CHECK: fcmpu {{[0-9]+}}, {{[0-9]+}}, [[REG3]]
+; CHECK: blr
+; CHECK-NVSXALT: lfs [[REG3:[0-9]+]]
+; CHECK-NVSXALT: fcmpu {{[0-9]+}}, {{[0-9]+}}, [[REG3]]
+; CHECK-NVSXALT: blr
+}
+
+define <2 x double> @t4() local_unnamed_addr #0 {
+  ret <2 x double> zeroinitializer
+; CHECK-LABEL: t4:
+; CHECK: xxlxor [[REG4:[0-9]+]], [[REG4]], [[REG4]]
+; CHECK: blr
+; CHECK-NVSXALT: lfs [[REG4:[0-9]+]]
+; CHECK-NVSXALT: fmr {{[0-9]+}}, [[REG4:[0-9]+]]
+; CHECK-NVSXALT: blr
+}
+
+define <2 x i64> @t5() local_unnamed_addr #0 {
+  ret <2 x i64> zeroinitializer
+; CHECK-LABEL: t5:
+; CHECK: xxlxor [[REG5:[0-9]+]], [[REG5]], [[REG5]]
+; CHECK: blr
+; CHECK-NVSXALT: li 3, 0
+; CHECK-NVSXALT-NEXT: li 4, 0
+; CHECK-NVSXALT-NEXT: blr
+}