From ef762f2639825306f0fe0814e22d7139dfa88859 Mon Sep 17 00:00:00 2001
From: Rafael Espindola <rafael.espindola@gmail.com>
Date: Wed, 10 Feb 2016 23:29:38 +0000
Subject: Don't include NOBITS TLS in PT_LOAD.

They don't count for the memory or file size, so this is mostly just a
simplification.

The only noticeable difference should be fewer empty program headers.

llvm-svn: 260465
---
 lld/test/ELF/avoid-empty-program-headers.s | 78 ++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 lld/test/ELF/avoid-empty-program-headers.s

(limited to 'lld/test/ELF/avoid-empty-program-headers.s')

diff --git a/lld/test/ELF/avoid-empty-program-headers.s b/lld/test/ELF/avoid-empty-program-headers.s
new file mode 100644
index 00000000000..f7315677e1a
--- /dev/null
+++ b/lld/test/ELF/avoid-empty-program-headers.s
@@ -0,0 +1,78 @@
+// REQUIRES: x86
+// RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
+// RUN: ld.lld %t -o %tout
+// RUN: llvm-readobj -program-headers %tout | FileCheck %s
+
+.global _start
+_start:
+        retq
+
+.section .tbss,"awT",@nobits
+        .zero 4
+// FIXME: Test that we don't create unecessary empty PT_LOAD and PT_GNU_RELRO
+// for the .tbss section.
+
+// CHECK:      ProgramHeaders [
+// CHECK-NEXT:   ProgramHeader {
+// CHECK-NEXT:     Type: PT_PHDR (0x6)
+// CHECK-NEXT:     Offset: 0x40
+// CHECK-NEXT:     VirtualAddress: 0x10040
+// CHECK-NEXT:     PhysicalAddress: 0x10040
+// CHECK-NEXT:     FileSize: 280
+// CHECK-NEXT:     MemSize: 280
+// CHECK-NEXT:     Flags [ (0x4)
+// CHECK-NEXT:       PF_R (0x4)
+// CHECK-NEXT:     ]
+// CHECK-NEXT:     Alignment: 8
+// CHECK-NEXT:   }
+// CHECK-NEXT:   ProgramHeader {
+// CHECK-NEXT:     Type: PT_LOAD (0x1)
+// CHECK-NEXT:     Offset: 0x0
+// CHECK-NEXT:     VirtualAddress: 0x10000
+// CHECK-NEXT:     PhysicalAddress: 0x10000
+// CHECK-NEXT:     FileSize: 344
+// CHECK-NEXT:     MemSize: 344
+// CHECK-NEXT:     Flags [ (0x4)
+// CHECK-NEXT:       PF_R (0x4)
+// CHECK-NEXT:     ]
+// CHECK-NEXT:     Alignment: 4096
+// CHECK-NEXT:   }
+// CHECK-NEXT:   ProgramHeader {
+// CHECK-NEXT:     Type: PT_LOAD (0x1)
+// CHECK-NEXT:     Offset: 0x1000
+// CHECK-NEXT:     VirtualAddress: 0x11000
+// CHECK-NEXT:     PhysicalAddress: 0x11000
+// CHECK-NEXT:     FileSize: 1
+// CHECK-NEXT:     MemSize: 1
+// CHECK-NEXT:     Flags [ (0x5)
+// CHECK-NEXT:       PF_R (0x4)
+// CHECK-NEXT:       PF_X (0x1)
+// CHECK-NEXT:     ]
+// CHECK-NEXT:     Alignment: 4096
+// CHECK-NEXT:   }
+// CHECK-NEXT:   ProgramHeader {
+// CHECK-NEXT:     Type: PT_TLS (0x7)
+// CHECK-NEXT:     Offset: 0x1001
+// CHECK-NEXT:     VirtualAddress: 0x11001
+// CHECK-NEXT:     PhysicalAddress: 0x11001
+// CHECK-NEXT:     FileSize: 0
+// CHECK-NEXT:     MemSize: 4
+// CHECK-NEXT:     Flags [ (0x4)
+// CHECK-NEXT:       PF_R (0x4)
+// CHECK-NEXT:     ]
+// CHECK-NEXT:     Alignment: 1
+// CHECK-NEXT:   }
+// CHECK-NEXT:   ProgramHeader {
+// CHECK-NEXT:     Type: PT_GNU_STACK (0x6474E551)
+// CHECK-NEXT:     Offset: 0x0
+// CHECK-NEXT:     VirtualAddress: 0x0
+// CHECK-NEXT:     PhysicalAddress: 0x0
+// CHECK-NEXT:     FileSize: 0
+// CHECK-NEXT:     MemSize: 0
+// CHECK-NEXT:     Flags [ (0x6)
+// CHECK-NEXT:       PF_R (0x4)
+// CHECK-NEXT:       PF_W (0x2)
+// CHECK-NEXT:     ]
+// CHECK-NEXT:     Alignment: 0
+// CHECK-NEXT:   }
+// CHECK-NEXT: ]
-- 
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