From 7b837d8c75f78fe55c9b348b9ec2281169a48d2a Mon Sep 17 00:00:00 2001
From: Tim Northover <tnorthover@apple.com>
Date: Sat, 29 Mar 2014 10:18:08 +0000
Subject: ARM64: initial backend import

This adds a second implementation of the AArch64 architecture to LLVM,
accessible in parallel via the "arm64" triple. The plan over the
coming weeks & months is to merge the two into a single backend,
during which time thorough code review should naturally occur.

Everything will be easier with the target in-tree though, hence this
commit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205090 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/CodeGen/ARM64/stp.ll | 101 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 test/CodeGen/ARM64/stp.ll

(limited to 'test/CodeGen/ARM64/stp.ll')

diff --git a/test/CodeGen/ARM64/stp.ll b/test/CodeGen/ARM64/stp.ll
new file mode 100644
index 0000000000..eacf093aad
--- /dev/null
+++ b/test/CodeGen/ARM64/stp.ll
@@ -0,0 +1,101 @@
+; RUN: llc < %s -march=arm64 -arm64-stp-suppress=false -verify-machineinstrs | FileCheck %s
+; RUN: llc < %s -march=arm64 -arm64-unscaled-mem-op=true\
+; RUN:   -verify-machineinstrs | FileCheck -check-prefix=STUR_CHK %s
+
+; CHECK: stp_int
+; CHECK: stp w0, w1, [x2]
+define void @stp_int(i32 %a, i32 %b, i32* nocapture %p) nounwind {
+  store i32 %a, i32* %p, align 4
+  %add.ptr = getelementptr inbounds i32* %p, i64 1
+  store i32 %b, i32* %add.ptr, align 4
+  ret void
+}
+
+; CHECK: stp_long
+; CHECK: stp x0, x1, [x2]
+define void @stp_long(i64 %a, i64 %b, i64* nocapture %p) nounwind {
+  store i64 %a, i64* %p, align 8
+  %add.ptr = getelementptr inbounds i64* %p, i64 1
+  store i64 %b, i64* %add.ptr, align 8
+  ret void
+}
+
+; CHECK: stp_float
+; CHECK: stp s0, s1, [x0]
+define void @stp_float(float %a, float %b, float* nocapture %p) nounwind {
+  store float %a, float* %p, align 4
+  %add.ptr = getelementptr inbounds float* %p, i64 1
+  store float %b, float* %add.ptr, align 4
+  ret void
+}
+
+; CHECK: stp_double
+; CHECK: stp d0, d1, [x0]
+define void @stp_double(double %a, double %b, double* nocapture %p) nounwind {
+  store double %a, double* %p, align 8
+  %add.ptr = getelementptr inbounds double* %p, i64 1
+  store double %b, double* %add.ptr, align 8
+  ret void
+}
+
+; Test the load/store optimizer---combine ldurs into a ldp, if appropriate
+define void @stur_int(i32 %a, i32 %b, i32* nocapture %p) nounwind {
+; STUR_CHK: stur_int
+; STUR_CHK: stp w{{[0-9]+}}, {{w[0-9]+}}, [x{{[0-9]+}}, #-8]
+; STUR_CHK-NEXT: ret
+  %p1 = getelementptr inbounds i32* %p, i32 -1
+  store i32 %a, i32* %p1, align 2
+  %p2 = getelementptr inbounds i32* %p, i32 -2
+  store i32 %b, i32* %p2, align 2
+  ret void
+}
+
+define void @stur_long(i64 %a, i64 %b, i64* nocapture %p) nounwind {
+; STUR_CHK: stur_long
+; STUR_CHK: stp x{{[0-9]+}}, {{x[0-9]+}}, [x{{[0-9]+}}, #-16]
+; STUR_CHK-NEXT: ret
+  %p1 = getelementptr inbounds i64* %p, i32 -1
+  store i64 %a, i64* %p1, align 2
+  %p2 = getelementptr inbounds i64* %p, i32 -2
+  store i64 %b, i64* %p2, align 2
+  ret void
+}
+
+define void @stur_float(float %a, float %b, float* nocapture %p) nounwind {
+; STUR_CHK: stur_float
+; STUR_CHK: stp s{{[0-9]+}}, {{s[0-9]+}}, [x{{[0-9]+}}, #-8]
+; STUR_CHK-NEXT: ret
+  %p1 = getelementptr inbounds float* %p, i32 -1
+  store float %a, float* %p1, align 2
+  %p2 = getelementptr inbounds float* %p, i32 -2
+  store float %b, float* %p2, align 2
+  ret void
+}
+
+define void @stur_double(double %a, double %b, double* nocapture %p) nounwind {
+; STUR_CHK: stur_double
+; STUR_CHK: stp d{{[0-9]+}}, {{d[0-9]+}}, [x{{[0-9]+}}, #-16]
+; STUR_CHK-NEXT: ret
+  %p1 = getelementptr inbounds double* %p, i32 -1
+  store double %a, double* %p1, align 2
+  %p2 = getelementptr inbounds double* %p, i32 -2
+  store double %b, double* %p2, align 2
+  ret void
+}
+
+define void @splat_v4i32(i32 %v, i32 *%p) {
+entry:
+
+; CHECK-LABEL: splat_v4i32
+; CHECK-DAG: stp w0, w0, [x1]
+; CHECK-DAG: stp w0, w0, [x1, #8]
+; CHECK: ret
+
+  %p17 = insertelement <4 x i32> undef, i32 %v, i32 0
+  %p18 = insertelement <4 x i32> %p17, i32 %v, i32 1
+  %p19 = insertelement <4 x i32> %p18, i32 %v, i32 2
+  %p20 = insertelement <4 x i32> %p19, i32 %v, i32 3
+  %p21 = bitcast i32* %p to <4 x i32>*
+  store <4 x i32> %p20, <4 x i32>* %p21, align 4
+  ret void
+}
-- 
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