Convert indirect calls to direct when possible.

Please see patch discussion:
https://www.sourceware.org/ml/binutils/2016-05/msg00322.html

2016-06-28  Sriraman Tallam  <tmsriram@google.com>

	* x86_64.cc (Lazy_view): New class.
	(can_convert_mov_to_lea): Templatize function.  Make the function
	check for appropriate relocation types and use the view parameter
	to get section contents.
	(can_convert_callq_to_direct): New function.
	(Target_x86_64<size>::Scan::global): Refactor.
	(Target_x86_64<size>::Relocate::relocate): Refactor. Change any indirect
	call via GOT that can be converted.
	* testsuite/Makefile.am (x86_64_indirect_call_to_direct.sh): New test.
	* testsuite/Makefile.in: Regenerate.
	* testsuite/x86_64_indirect_call_to_direct1.s: New file.
	* testsuite/x86_64_indirect_jump_to_direct1.s: New file.

1 files changed, 20 insertions, 0 deletions

diff --git a/gold/testsuite/Makefile.in b/gold/testsuite/Makefile.in
index 5b66c9c..894e6dd 100644
--- a/gold/testsuite/Makefile.in
+++ b/gold/testsuite/Makefile.in
@@ -223,6 +223,7 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
 @GCC_TRUE@@HAVE_STATIC_TRUE@@NATIVE_LINKER_TRUE@@STATIC_TLS_TRUE@@TLS_TRUE@	tls_static_pic_test
 @FN_PTRS_IN_SO_WITHOUT_PIC_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@@TLS_TRUE@am__append_26 = tls_shared_nonpic_test
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_27 = x86_64_mov_to_lea.sh \
+@DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	x86_64_indirect_call_to_direct.sh \
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	x86_64_overflow_pc32.sh \
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	x32_overflow_pc32.sh
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_28 = x86_64_mov_to_lea1.stdout \
@@ -239,6 +240,8 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	x86_64_mov_to_lea12.stdout \
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	x86_64_mov_to_lea13.stdout \
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	x86_64_mov_to_lea14.stdout \
+@DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	x86_64_indirect_call_to_direct1.stdout \
+@DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	x86_64_indirect_jump_to_direct1.stdout \
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	x86_64_overflow_pc32.err \
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	x32_overflow_pc32.err
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_29 = x86_64_mov_to_lea1 \
@@ -255,6 +258,8 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	x86_64_mov_to_lea12 \
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	x86_64_mov_to_lea13 \
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	x86_64_mov_to_lea14 \
+@DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	x86_64_indirect_call_to_direct1 \
+@DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	x86_64_indirect_jump_to_direct1 \
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	x86_64_overflow_pc32.err \
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	x32_overflow_pc32.err
 @DEFAULT_TARGET_I386_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_30 = i386_mov_to_lea.sh
@@ -4564,6 +4569,8 @@ tls_pie_test.sh.log: tls_pie_test.sh
 	@p='tls_pie_test.sh'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
 x86_64_mov_to_lea.sh.log: x86_64_mov_to_lea.sh
 	@p='x86_64_mov_to_lea.sh'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
+x86_64_indirect_call_to_direct.sh.log: x86_64_indirect_call_to_direct.sh
+	@p='x86_64_indirect_call_to_direct.sh'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
 x86_64_overflow_pc32.sh.log: x86_64_overflow_pc32.sh
 	@p='x86_64_overflow_pc32.sh'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
 x32_overflow_pc32.sh.log: x32_overflow_pc32.sh
@@ -5641,6 +5648,19 @@ uninstall-am:
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	$(TEST_OBJDUMP) -dw $< > $@
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@x86_64_mov_to_lea14.stdout: x86_64_mov_to_lea14
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	$(TEST_OBJDUMP) -dw $< > $@
+
+@DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@x86_64_indirect_call_to_direct1.o: x86_64_indirect_call_to_direct1.s
+@DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	$(TEST_AS) --64 -mrelax-relocations=yes -o $@ $<
+@DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@x86_64_indirect_call_to_direct1: x86_64_indirect_call_to_direct1.o gcctestdir/ld
+@DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	gcctestdir/ld -o $@ $<
+@DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@x86_64_indirect_call_to_direct1.stdout: x86_64_indirect_call_to_direct1
+@DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	$(TEST_OBJDUMP) -dw $< > $@
+@DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@x86_64_indirect_jump_to_direct1.o: x86_64_indirect_jump_to_direct1.s
+@DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	$(TEST_AS) --64 -mrelax-relocations=yes -o $@ $<
+@DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@x86_64_indirect_jump_to_direct1: x86_64_indirect_jump_to_direct1.o gcctestdir/ld
+@DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	gcctestdir/ld -o $@ $<
+@DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@x86_64_indirect_jump_to_direct1.stdout: x86_64_indirect_jump_to_direct1
+@DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	$(TEST_OBJDUMP) -dw $< > $@
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@x86_64_overflow_pc32.o: x86_64_overflow_pc32.s
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	$(TEST_AS) -o $@ $<
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@x86_64_overflow_pc32.err: x86_64_overflow_pc32.o gcctestdir/ld