[PATCH] [lld][LinkerScript] Add matching of output sections to segments

[Sean Silva]

================
Comment at: test/elf/linkerscript/phdrs-invalid.test:10-35
@@ +9,28 @@
+
+(command line clang -c simple.S -o simple.o)
+
+      .text
+      main:
+        mov $1, %eax
+        movq $1, %rdi
+        movq $msg, %rsi
+        movq $14, %rdx
+        syscall
+        ret
+
+        .globl _start
+      _start:
+        call  main
+        mov $60, %eax
+        syscall
+        ret
+
+      .data
+      msg: .asciz "Hello, World!\n"
+*/
+
+/*
+Prepare the object file to test on.
+
+RUN: yaml2obj -format=elf %p/Inputs/simple.o.yaml -o=%t.o
+*/
----------------
You can directly use llvm-mc instead of yaml2obj.

================
Comment at: test/elf/linkerscript/phdrs-invalid.test:41-62
@@ +40,24 @@
+
+RUN: not lld -flavor gnu -target x86_64 -T %p/phdrs/undef-no-phdrs.script %t.o -static -o %t1 &> %t1-error
+RUN: FileCheck -check-prefix UNDEF-NO-PHDRS %s < %t1-error
+
+UNDEF-NO-PHDRS: Linker script has wrong segments set for output section .text
+*/
+
+/*
+Test undefined header used when PHDRS is empty.
+
+RUN: not lld -flavor gnu -target x86_64 -T %p/phdrs/undef-empty-phdrs.script %t.o -static -o %t2 &> %t2-error
+RUN: FileCheck -check-prefix UNDEF-EMPTY-PHDRS %s < %t2-error
+
+UNDEF-EMPTY-PHDRS: Linker script has wrong segments set for output section .data
+*/
+
+/*
+Test undefined header used when PHDRS contains definitions.
+
+RUN: not lld -flavor gnu -target x86_64 -T %p/phdrs/undef-id-phdrs.script %t.o -static -o %t3 &> %t3-error
+RUN: FileCheck -check-prefix UNDEF-ID-PHDRS %s < %t3-error
+
+UNDEF-ID-PHDRS: Linker script has wrong segments set for output section .text
+*/
----------------
Can you put the `RUN:` lines and check lines in the corresponding files?
(you might need to add a lit.local.cfg that identifies the interesting suffixes as tests)

http://reviews.llvm.org/D10359

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