Add a test for explicitly exercising the mc-relax-all flag.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169764 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/MC/ELF/relax-all-flag.s b/test/MC/ELF/relax-all-flag.s
new file mode 100644 (file)
index 0000000..4c1c78c
--- /dev/null
+++ b/test/MC/ELF/relax-all-flag.s
@@ -0,0 +1,19 @@
+// By default, the jmp here does not need relaxation (so the 0xeb opdoce can be
+// used).
+// However, with -mc-relax-all passed to MC, all jumps are relaxed and we
+// expect to see a different instruction.
+
+// RUN: llvm-mc -filetype=obj -mc-relax-all -triple x86_64-pc-linux-gnu %s -o - \
+// RUN:  | llvm-objdump -disassemble - | FileCheck -check-prefix=RELAXALL %s
+
+// RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - \
+// RUN:  | llvm-objdump -disassemble - | FileCheck %s
+
+.text
+foo:
+  mov %rax, %rax
+  jmp foo
+
+// RELAXALL:    3:  e9
+// CHECK:       3:  eb
+