Start adding an integrated assembler.

tests_lit/llvm2ice_tests/fp.pnacl.ll

 ; This tries to be a comprehensive test of f32 and f64 operations.
 ; The CHECK lines are only checking for basic instruction patterns
 ; that should be present regardless of the optimization level, so
 ; there are no special OPTM1 match lines.
 
 ; TODO(jvoung): fix extra "CALLTARGETS" run. The llvm-objdump symbolizer
 ; doesn't know how to symbolize non-section-local functions.
 ; The newer LLVM 3.6 one does work, but watch out for other bugs.
 
 ; RUN: %llvm2ice -O2 --verbose none %s \
@@ skipping 106 matching lines @@
 
 define internal float @addFloat(float %a, float %b) {
 entry:
   %add = fadd float %a, %b
   ret float %add
 }
 ; CHECK-LABEL: addFloat
 ; CHECK: addss
 ; CHECK: fld
 
+define internal float @addFloatImm(float %a) {
+entry:
+  %add = fadd float %a, 1.0
+  ret float %add
+}
+; CHECK-LABEL: addFloatImm
+; CHECK: addss
+; CHECK: fld
+
 define internal double @addDouble(double %a, double %b) {
 entry:
   %add = fadd double %a, %b
   ret double %add
 }
 ; CHECK-LABEL: addDouble
 ; CHECK: addsd
 ; CHECK: fld
 
+define internal double @addDoubleImm(double %a) {
+entry:
+  %add = fadd double %a, 1.0
+  ret double %add
+}
+; CHECK-LABEL: addDoubleImm
+; CHECK: addsd
+; CHECK: fld
+
+
 define internal float @subFloat(float %a, float %b) {
 entry:
   %sub = fsub float %a, %b
   ret float %sub
 }
 ; CHECK-LABEL: subFloat
 ; CHECK: subss
 ; CHECK: fld
 
 define internal double @subDouble(double %a, double %b) {
@@ skipping 1027 matching lines @@
   %cond = select i1 %cmp, double %a, double %b
   ret double %cond
 }
 ; CHECK-LABEL: selectDoubleVarVar
 ; CHECK: ucomisd
 ; CHECK: ja {{[0-9]}}
 ; CHECK: fld
 
 ; ERRORS-NOT: ICE translation error
 ; DUMP-NOT: SZ