[Power9] Add __float128 builtins for Rounding Operations

Added __float128 support for a number of rounding operations:

trunc
rint
nearbyint
round
floor
ceil

Differential Revision: https://reviews.llvm.org/D48415

llvm-svn: 336601

1 files changed, 76 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/PowerPC/f128-rounding.ll b/llvm/test/CodeGen/PowerPC/f128-rounding.ll
new file mode 100644
index 00000000000..ac0b3be9cd0
--- /dev/null
+++ b/llvm/test/CodeGen/PowerPC/f128-rounding.ll
@@ -0,0 +1,76 @@
+; RUN: llc -mcpu=pwr9 -mtriple=powerpc64le-unknown-unknown \
+; RUN:   -enable-ppc-quad-precision -verify-machineinstrs < %s | FileCheck %s
+
+
+define void @qp_trunc(fp128* nocapture readonly %a, fp128* nocapture %res) {
+entry:
+  %0 = load fp128, fp128* %a, align 16
+  %1 = tail call fp128 @llvm.trunc.f128(fp128 %0)
+  store fp128 %1, fp128* %res, align 16
+  ret void
+; CHECK-LABEL: qp_trunc
+; CHECK: xsrqpi 1, {{[0-9]+}}, {{[0-9]+}}, 1
+; CHECK: blr
+}
+declare fp128     @llvm.trunc.f128(fp128 %Val)
+
+define void @qp_rint(fp128* nocapture readonly %a, fp128* nocapture %res) {
+entry:
+  %0 = load fp128, fp128* %a, align 16
+  %1 = tail call fp128 @llvm.rint.f128(fp128 %0)
+  store fp128 %1, fp128* %res, align 16
+  ret void
+; CHECK-LABEL: qp_rint
+; CHECK: xsrqpix 0, {{[0-9]+}}, {{[0-9]+}}, 3
+; CHECK: blr
+}
+declare fp128     @llvm.rint.f128(fp128 %Val)
+
+define void @qp_nearbyint(fp128* nocapture readonly %a, fp128* nocapture %res) {
+entry:
+  %0 = load fp128, fp128* %a, align 16
+  %1 = tail call fp128 @llvm.nearbyint.f128(fp128 %0)
+  store fp128 %1, fp128* %res, align 16
+  ret void
+; CHECK-LABEL: qp_nearbyint
+; CHECK: xsrqpi 0, {{[0-9]+}}, {{[0-9]+}}, 3
+; CHECK: blr
+}
+declare fp128     @llvm.nearbyint.f128(fp128 %Val)
+
+define void @qp_round(fp128* nocapture readonly %a, fp128* nocapture %res) {
+entry:
+  %0 = load fp128, fp128* %a, align 16
+  %1 = tail call fp128 @llvm.round.f128(fp128 %0)
+  store fp128 %1, fp128* %res, align 16
+  ret void
+; CHECK-LABEL: qp_round
+; CHECK: xsrqpi 0, {{[0-9]+}}, {{[0-9]+}}, 0
+; CHECK: blr
+}
+declare fp128     @llvm.round.f128(fp128 %Val)
+
+define void @qp_floor(fp128* nocapture readonly %a, fp128* nocapture %res) {
+entry:
+  %0 = load fp128, fp128* %a, align 16
+  %1 = tail call fp128 @llvm.floor.f128(fp128 %0)
+  store fp128 %1, fp128* %res, align 16
+  ret void
+; CHECK-LABEL: qp_floor
+; CHECK: xsrqpi 1, {{[0-9]+}}, {{[0-9]+}}, 3
+; CHECK: blr
+}
+declare fp128     @llvm.floor.f128(fp128 %Val)
+
+define void @qp_ceil(fp128* nocapture readonly %a, fp128* nocapture %res) {
+entry:
+  %0 = load fp128, fp128* %a, align 16
+  %1 = tail call fp128 @llvm.ceil.f128(fp128 %0)
+  store fp128 %1, fp128* %res, align 16
+  ret void
+; CHECK-LABEL: qp_ceil
+; CHECK: xsrqpi 1, {{[0-9]+}}, {{[0-9]+}}, 2
+; CHECK: blr
+}
+declare fp128     @llvm.ceil.f128(fp128 %Val)
+