From 4fb63d088bca9fc31e54eb1619e2cb448c3a4b53 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Wed, 15 Jul 2009 04:12:33 +0000
Subject: fix an arm codegen bug (the same as PR4482 on ppc) where
 available_externally symbols were not getting stubs.  While I'm at it, add a
 big testcase for stub generation to make sure I don't break anything.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75737 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/CodeGen/ARM/stubs.ll | 67 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 test/CodeGen/ARM/stubs.ll

(limited to 'test')

diff --git a/test/CodeGen/ARM/stubs.ll b/test/CodeGen/ARM/stubs.ll
new file mode 100644
index 0000000..7c9cc23
--- /dev/null
+++ b/test/CodeGen/ARM/stubs.ll
@@ -0,0 +1,67 @@
+; RUN: llvm-as < %s | llc -relocation-model=static | FileCheck %s -check-prefix=STATIC
+; RUN: llvm-as < %s | llc -relocation-model=pic | FileCheck %s -check-prefix=PIC
+; RUN: llvm-as < %s | llc -relocation-model=dynamic-no-pic | FileCheck %s -check-prefix=DYNAMIC
+; PR4482
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
+target triple = "armv6-apple-darwin2"
+
+define i32 @foo(i64 %x) nounwind {
+entry:
+; STATIC: _foo:
+; STATIC: bl _exact_log2
+; STATIC: ldmfd sp!, {r7, pc}
+; STATIC: .subsections_via_symbols
+
+; PIC: _foo:
+; PIC: bl L_exact_log2$stub
+; PIC: ldmfd sp!, {r7, pc}
+
+; DYNAMIC: _foo:
+; DYNAMIC: bl L_exact_log2$stub
+; DYNAMIC: ldmfd sp!, {r7, pc}
+
+ 	%A = call i32 @exact_log2(i64 %x)
+	ret i32 %A
+}
+
+define available_externally i32 @exact_log2(i64 %x) nounwind {
+  ret i32 4
+}
+
+
+; PIC: .section __TEXT,__picsymbolstub4,symbol_stubs,none,16
+; PIC: L_exact_log2$stub:
+; PIC: .indirect_symbol _exact_log2
+; PIC: ldr ip, L_exact_log2$slp
+; PIC: L_exact_log2$scv:
+; PIC: add ip, pc, ip
+; PIC: ldr pc, [ip, #0]
+; PIC: L_exact_log2$slp:
+; PIC: .long	L_exact_log2$lazy_ptr-(L_exact_log2$scv+8)
+
+; PIC: .lazy_symbol_pointer
+; PIC: L_exact_log2$lazy_ptr:
+; PIC: .indirect_symbol _exact_log2
+; PIC: .long	dyld_stub_binding_helper
+
+; PIC: .subsections_via_symbols
+
+
+; DYNAMIC: .section __TEXT,__symbol_stub4,symbol_stubs,none,12
+; DYNAMIC: L_exact_log2$stub:
+; DYNAMIC: .indirect_symbol _exact_log2
+; DYNAMIC: ldr ip, L_exact_log2$slp
+; DYNAMIC: ldr pc, [ip, #0]
+; DYNAMIC: L_exact_log2$slp:
+; DYNAMIC: .long	L_exact_log2$lazy_ptr
+
+; DYNAMIC: .lazy_symbol_pointer
+; DYNAMIC: L_exact_log2$lazy_ptr:
+; DYNAMIC: .indirect_symbol _exact_log2
+; DYNAMIC: .long	dyld_stub_binding_helper
+; DYNAMIC: .subsections_via_symbols
+
+
+
+
+
-- 
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