Get text align in elf writer from the target asm method instead.

Rather than hard code 32.

BUG= https://code.google.com/p/nativeclient/issues/detail?id=4080
R=stichnot@chromium.org

Review URL: https://codereview.chromium.org/948343007

src/IceELFObjectWriter.cpp

diff --git a/src/IceELFObjectWriter.cpp b/src/IceELFObjectWriter.cpp
index 4e56d85..b8f678e 100644
--- a/src/IceELFObjectWriter.cpp
+++ b/src/IceELFObjectWriter.cpp
@@ -225,8 +225,7 @@
       SectionName += "." + FuncName;
     bool IsELF64 = isELF64(Ctx.getTargetArch());
     const Elf64_Xword ShFlags = SHF_ALLOC | SHF_EXECINSTR;
-    // TODO(jvoung): Should be bundle size. Grab it from that target?
-    const Elf64_Xword ShAlign = 32;
+    const Elf64_Xword ShAlign = 1 << Asm->getBundleAlignLog2Bytes();
     Section = createSection<ELFTextSection>(SectionName, SHT_PROGBITS, ShFlags,
                                             ShAlign, 0);
     Elf64_Off OffsetInFile = alignFileOffset(Section->getSectionAlign());