[PowerPC][Power9]Legalize and emit code for quad-precision add/div/mul/sub

Legalize and emit code for quad-precision floating point operations:

  * xsaddqp
  * xssubqp
  * xsdivqp
  * xsmulqp

Differential Revision: https://reviews.llvm.org/D44506

llvm-svn: 327878

1 files changed, 73 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/PowerPC/f128-arith.ll b/llvm/test/CodeGen/PowerPC/f128-arith.ll
new file mode 100644
index 00000000000..540754d2f7b
--- /dev/null
+++ b/llvm/test/CodeGen/PowerPC/f128-arith.ll
@@ -0,0 +1,73 @@
+; RUN: llc -mcpu=pwr9 -mtriple=powerpc64le-unknown-unknown < %s | FileCheck %s
+
+; Function Attrs: norecurse nounwind
+define void @qpAdd(fp128* nocapture readonly %a, fp128* nocapture %res) {
+entry:
+  %0 = load fp128, fp128* %a, align 16
+  %add = fadd fp128 %0, %0
+  store fp128 %add, fp128* %res, align 16
+  ret void
+; CHECK-LABEL: qpAdd
+; CHECK-NOT bl __addtf3
+; CHECK xsaddqp
+; CHECK stxv
+; CHECK blr
+}
+
+; Function Attrs: norecurse nounwind
+define void @qpSub(fp128* nocapture readonly %a, fp128* nocapture %res) {
+entry:
+  %0 = load fp128, fp128* %a, align 16
+  %sub = fsub fp128 %0, %0
+  store fp128 %sub, fp128* %res, align 16
+  ret void
+; CHECK-LABEL: qpSub
+; CHECK-NOT bl __subtf3
+; CHECK xssubqp
+; CHECK stxv
+; CHECK blr
+}
+
+; Function Attrs: norecurse nounwind
+define void @qpMul(fp128* nocapture readonly %a, fp128* nocapture %res) {
+entry:
+  %0 = load fp128, fp128* %a, align 16
+  %mul = fmul fp128 %0, %0
+  store fp128 %mul, fp128* %res, align 16
+  ret void
+; CHECK-LABEL: qpMul
+; CHECK-NOT bl __multf3
+; CHECK xsmulqp
+; CHECK stxv
+; CHECK blr
+}
+
+; Function Attrs: norecurse nounwind
+define void @qpDiv(fp128* nocapture readonly %a, fp128* nocapture %res) {
+entry:
+  %0 = load fp128, fp128* %a, align 16
+  %div = fdiv fp128 %0, %0
+  store fp128 %div, fp128* %res, align 16
+  ret void
+; CHECK-LABEL: qpDiv
+; CHECK-NOT bl __divtf3
+; CHECK xsdivqp
+; CHECK stxv
+; CHECK blr
+}
+
+define void @testLdNSt(i8* nocapture readonly %PtrC, fp128* nocapture %PtrF) {
+entry:
+  %add.ptr = getelementptr inbounds i8, i8* %PtrC, i64 4
+  %0 = bitcast i8* %add.ptr to fp128*
+  %1 = load fp128, fp128* %0, align 16
+  %2 = bitcast fp128* %PtrF to i8*
+  %add.ptr1 = getelementptr inbounds i8, i8* %2, i64 8
+  %3 = bitcast i8* %add.ptr1 to fp128*
+  store fp128 %1, fp128* %3, align 16
+  ret void
+; CHECK-LABEL: testLdNSt
+; CHECK lxvx
+; CHECK stxvx
+; CHECK-NEXT blr
+}