Subzero: Clean up function header emission.

tests_lit/llvm2ice_tests/vector-icmp.ll

 ; This file checks support for comparing vector values with the icmp
 ; instruction.
 
-; RUN: %p2i -i %s --assemble --disassemble --args -O2 --verbose none \
-; RUN:   | FileCheck %s
-; RUN: %p2i -i %s --assemble --disassemble --args -Om1 --verbose none \
-; RUN:   | FileCheck %s
+; RUN: %p2i -i %s --filetype=obj --disassemble --args -O2 | FileCheck %s
+; RUN: %p2i -i %s --filetype=obj --disassemble --args -Om1 | FileCheck %s
 
 ; Check that sext elimination occurs when the result of the comparison
 ; instruction is alrady sign extended.  Sign extension to 4 x i32 uses
 ; the pslld instruction.
 define <4 x i32> @test_sext_elimination(<4 x i32> %a, <4 x i32> %b) {
 entry:
   %res.trunc = icmp eq <4 x i32> %a, %b
   %res = sext <4 x i1> %res.trunc to <4 x i32>
   ret <4 x i32> %res
 ; CHECK-LABEL: test_sext_elimination
@@ skipping 472 matching lines @@
 }
 
 define <16 x i1> @test_icmp_v16i1_ult(<16 x i1> %a, <16 x i1> %b) {
 entry:
   %res = icmp ult <16 x i1> %a, %b
   ret <16 x i1> %res
 ; CHECK-LABEL: test_icmp_v16i1_ult
 ; CHECK: pxor
 ; CHECK: pcmpgtb
 }