From 1326c6f14bbd1e0b887320f30639cbab16cc1803 Mon Sep 17 00:00:00 2001
From: Robert Lytton <robert@xmos.com>
Date: Mon, 2 Dec 2013 10:18:14 +0000
Subject: XCore target: Enable frames larger than 65535 to be lowered

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196084 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/CodeGen/XCore/epilogue_prologue.ll | 125 ++++++++++++++++++++++++++++++++
 1 file changed, 125 insertions(+)

(limited to 'test')

diff --git a/test/CodeGen/XCore/epilogue_prologue.ll b/test/CodeGen/XCore/epilogue_prologue.ll
index 185565f4e2..ffbe7a1571 100644
--- a/test/CodeGen/XCore/epilogue_prologue.ll
+++ b/test/CodeGen/XCore/epilogue_prologue.ll
@@ -1,5 +1,15 @@
 ; RUN: llc < %s -march=xcore | FileCheck %s
+; RUN: llc < %s -march=xcore -disable-fp-elim | FileCheck %s -check-prefix=CHECKFP
 
+
+; CHECKFP-LABEL: f1
+; CHECKFP: entsp 2
+; CHECKFP-NEXT: stw r10, sp[1]
+; CHECKFP-NEXT: ldaw r10, sp[0]
+; CHECKFP: set sp, r10
+; CHECKFP-NEXT: ldw r10, sp[1]
+; CHECKFP-NEXT: retsp 2
+;
 ; CHECK-LABEL: f1
 ; CHECK: stw lr, sp[0]
 ; CHECK: ldw lr, sp[0]
@@ -10,6 +20,22 @@ entry:
   ret void
 }
 
+
+; CHECKFP-LABEL:f3
+; CHECKFP: entsp 3
+; CHECKFP-NEXT: stw r10, sp[1]
+; CHECKFP-NEXT: ldaw r10, sp[0]
+; CHECKFP-NEXT: stw [[REG:r[4-9]+]], r10[2]
+; CHECKFP-NEXT: mov [[REG]], r0
+; CHECKFP-NEXT: extsp 1
+; CHECKFP-NEXT: bl f2
+; CHECKFP-NEXT: ldaw sp, sp[1]
+; CHECKFP-NEXT: mov r0, [[REG]]
+; CHECKFP-NEXT: ldw [[REG]], r10[2]
+; CHECKFP-NEXT: set sp, r10
+; CHECKFP-NEXT: ldw r10, sp[1]
+; CHECKFP-NEXT: retsp 3
+;
 ; CHECK-LABEL: f3
 ; CHECK: entsp 2
 ; CHECK: stw [[REG:r[4-9]+]], sp[1]
@@ -24,3 +50,102 @@ entry:
   call void @f2()
   ret i32 %i
 }
+
+
+; CHECKFP-LABEL: f4
+; CHECKFP: extsp 65535
+; CHECKFP-NEXT: .Ltmp{{[0-9]+}}
+; CHECKFP-NEXT: .cfi_def_cfa_offset 262140
+; CHECKFP-NEXT: extsp 34467
+; CHECKFP-NEXT: .Ltmp{{[0-9]+}}
+; CHECKFP-NEXT: .cfi_def_cfa_offset 400008
+; CHECKFP-NEXT: stw r10, sp[1]
+; CHECKFP-NEXT: .Ltmp{{[0-9]+}}
+; CHECKFP-NEXT: .cfi_offset 10, -400004
+; CHECKFP-NEXT: ldaw r10, sp[0]
+; CHECKFP-NEXT: .Ltmp{{[0-9]+}}
+; CHECKFP-NEXT: .cfi_def_cfa_register 10
+; CHECKFP-NEXT: set sp, r10
+; CHECKFP-NEXT: ldw r10, sp[1]
+; CHECKFP-NEXT: ldaw sp, sp[65535]
+; CHECKFP-NEXT: ldaw sp, sp[34467]
+; CHECKFP-NEXT: retsp 0
+;
+; CHECK-LABEL: f4
+; CHECK: extsp 65535
+; CHECK-NEXT: .Ltmp{{[0-9]+}}
+; CHECK-NEXT: .cfi_def_cfa_offset 262140
+; CHECK-NEXT: extsp 34465
+; CHECK-NEXT: .Ltmp{{[0-9]+}}
+; CHECK-NEXT: .cfi_def_cfa_offset 400000
+; CHECK-NEXT: ldaw sp, sp[65535]
+; CHECK-NEXT: ldaw sp, sp[34465]
+; CHECK-NEXT: retsp 0
+define void @f4() {
+entry:
+  %0 = alloca [100000 x i32], align 4
+  ret void
+}
+
+
+; CHECKFP-LABEL: f6
+; CHECKFP: entsp 65535
+; CHECKFP-NEXT: .Ltmp{{[0-9]+}}
+; CHECKFP-NEXT: .cfi_def_cfa_offset 262140
+; CHECKFP-NEXT: .Ltmp{{[0-9]+}}
+; CHECKFP-NEXT: .cfi_offset 15, 0
+; CHECKFP-NEXT: extsp 65535
+; CHECKFP-NEXT: .Ltmp{{[0-9]+}}
+; CHECKFP-NEXT: .cfi_def_cfa_offset 524280
+; CHECKFP-NEXT: extsp 65535
+; CHECKFP-NEXT: .Ltmp{{[0-9]+}}
+; CHECKFP-NEXT: .cfi_def_cfa_offset 786420
+; CHECKFP-NEXT: extsp 3396
+; CHECKFP-NEXT: .Ltmp{{[0-9]+}}
+; CHECKFP-NEXT: .cfi_def_cfa_offset 800004
+; CHECKFP-NEXT: stw r10, sp[1]
+; CHECKFP-NEXT: .Ltmp{{[0-9]+}}
+; CHECKFP-NEXT: .cfi_offset 10, -800000
+; CHECKFP-NEXT: ldaw r10, sp[0]
+; CHECKFP-NEXT: .Ltmp{{[0-9]+}}
+; CHECKFP-NEXT: .cfi_def_cfa_register 10
+; CHECKFP-NEXT: extsp 1
+; CHECKFP-NEXT: ldaw r0, r10[2]
+; CHECKFP-NEXT: bl f5
+; CHECKFP-NEXT: ldaw sp, sp[1]
+; CHECKFP-NEXT: set sp, r10
+; CHECKFP-NEXT: ldw r10, sp[1]
+; CHECKFP-NEXT: ldaw sp, sp[65535]
+; CHECKFP-NEXT: ldaw sp, sp[65535]
+; CHECKFP-NEXT: ldaw sp, sp[65535]
+; CHECKFP-NEXT: retsp 3396
+;
+; CHECK-LABEL: f6
+; CHECK: entsp 65535
+; CHECK-NEXT: .Ltmp{{[0-9]+}}
+; CHECK-NEXT: .cfi_def_cfa_offset 262140
+; CHECK-NEXT: .Ltmp{{[0-9]+}}
+; CHECK-NEXT: .cfi_offset 15, 0
+; CHECK-NEXT: extsp 65535
+; CHECK-NEXT: .Ltmp{{[0-9]+}}
+; CHECK-NEXT: .cfi_def_cfa_offset 524280
+; CHECK-NEXT: extsp 65535
+; CHECK-NEXT: .Ltmp{{[0-9]+}}
+; CHECK-NEXT: .cfi_def_cfa_offset 786420
+; CHECK-NEXT: extsp 3395
+; CHECK-NEXT: .Ltmp{{[0-9]+}}
+; CHECK-NEXT: .cfi_def_cfa_offset 800000
+; CHECK-NEXT: ldaw r0, sp[1]
+; CHECK-NEXT: bl f5
+; CHECK-NEXT: ldaw sp, sp[65535]
+; CHECK-NEXT: ldaw sp, sp[65535]
+; CHECK-NEXT: ldaw sp, sp[65535]
+; CHECK-NEXT: retsp 3395
+declare void @f5(i32*)
+define void @f6() {
+entry:
+  %0 = alloca [199999 x i32], align 4
+  %1 = getelementptr inbounds [199999 x i32]* %0, i32 0, i32 0
+  call void @f5(i32* %1)
+  ret void
+}
-- 
cgit v1.2.3