Convert lit tests to check disassembled assembly.

tests_lit/llvm2ice_tests/bitcast.ll

 ; Trivial smoke test of bitcast between integer and FP types.
 
-; RUN: %llvm2ice -O2 --verbose none %s | FileCheck %s
-; RUN: %llvm2ice -O2 --verbose none %s \
-; RUN:     | llvm-mc -triple=i686-none-nacl -x86-asm-syntax=intel -filetype=obj
-; RUN: %llvm2ice -Om1 --verbose none %s \
-; RUN:     | llvm-mc -triple=i686-none-nacl -x86-asm-syntax=intel -filetype=obj
+; TODO(jvoung): remove -ffunction-sections. Sadly... diassembling some
+; "ret" within a section are broken in llvm-objdump for LLVM 3.4, and 3.5.
+; It was only fixed in 3.6.
+
+; RUN: %llvm2ice -O2 --verbose none -ffunction-sections %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
+; RUN: %llvm2ice -Om1 --verbose none -ffunction-sections %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
 ; RUN: %llvm2ice --verbose none %s | FileCheck --check-prefix=ERRORS %s
 ; RUN: %llvm2iceinsts %s | %szdiff %s | FileCheck --check-prefix=DUMP %s
 ; RUN: %llvm2iceinsts --pnacl %s | %szdiff %s \
 ; RUN:                           | FileCheck --check-prefix=DUMP %s
 
 define internal i32 @cast_f2i(float %f) {
 entry:
   %v0 = bitcast float %f to i32
   ret i32 %v0
 }
@@ skipping 18 matching lines @@
 ; CHECK-LABEL: cast_d2ll
 ; CHECK: mov edx
 ; CHECK: ret
 
 define internal i64 @cast_d2ll_const() {
 entry:
   %v0 = bitcast double 0x12345678901234 to i64
   ret i64 %v0
 }
 ; CHECK-LABEL: cast_d2ll_const
-; CHECK: movsd xmm{{.*}}, {{.*}}L$double
+; CHECK: movsd xmm{{.*}}, qword ptr
 ; CHECK: mov edx
 ; CHECK: ret
 
 define internal double @cast_ll2d(i64 %ll) {
 entry:
   %v0 = bitcast i64 %ll to double
   ret double %v0
 }
 ; CHECK-LABEL: cast_ll2d
 ; CHECK: fld qword ptr
 ; CHECK: ret
 
 define internal double @cast_ll2d_const() {
 entry:
   %v0 = bitcast i64 12345678901234 to double
   ret double %v0
 }
 ; CHECK-LABEL: cast_ll2d_const
 ; CHECK: mov {{.*}}, 1942892530
 ; CHECK: mov {{.*}}, 2874
 ; CHECK: fld qword ptr
 ; CHECK: ret
 
 ; ERRORS-NOT: ICE translation error
 ; DUMP-NOT: SZ