Align function starts to target-specific bundle alignment.

tests_lit/llvm2ice_tests/function_aligned.ll

Index: tests_lit/llvm2ice_tests/function_aligned.ll
diff --git a/tests_lit/llvm2ice_tests/function_aligned.ll b/tests_lit/llvm2ice_tests/function_aligned.ll
new file mode 100644
index 0000000000000000000000000000000000000000..fcb4699b014b9cb52b205acbe0dafa0a4745e783
--- /dev/null
+++ b/tests_lit/llvm2ice_tests/function_aligned.ll
@@ -0,0 +1,21 @@
+; Test that functions are aligned to the NaCl bundle alignment.
+; We could be smarter and only do this for indirect call targets
+; but typically you want to align functions anyway.
+; Also, we are currently using hlts for non-executable padding.
+
+; RUN: %llvm2ice -O2 --verbose none %s \
+; RUN:   | llvm-mc -triple=i686-none-nacl -x86-asm-syntax=intel -filetype=obj \
+; RUN:   | llvm-objdump -d --symbolize -x86-asm-syntax=intel - | FileCheck %s
+
+define void @foo() {
+  ret void
+}
+; CHECK-LABEL: foo
+; CHECK-NEXT: 0: {{.*}} ret
+; CHECK-NEXT: 1: {{.*}} hlt
+
+define void @bar() {
+  ret void
+}
+; CHECK-LABEL: bar
+; CHECK-NEXT: 20: {{.*}} ret