Modify pnacl subzero to be able to read pnacl bitcode files.

tests_lit/llvm2ice_tests/fp.pnacl.ll

 ; RUIN: %llvm2ice --verbose none %s | FileCheck %s
 ; RUIN: %llvm2ice --verbose none %s | FileCheck --check-prefix=ERRORS %s
-; RUN: %szdiff --llvm2ice=%llvm2ice %s | FileCheck --check-prefix=DUMP %s
+; RUN: %llvm2iceinsts %s | %szdiff %s | FileCheck --check-prefix=DUMP %s
+; RUN: %llvm2iceinsts --pnacl %s | %szdiff %s \
+; RUN:                           | FileCheck --check-prefix=DUMP %s
 
 @__init_array_start = internal constant [0 x i8] zeroinitializer, align 4
 @__fini_array_start = internal constant [0 x i8] zeroinitializer, align 4
 @__tls_template_start = internal constant [0 x i8] zeroinitializer, align 8
 @__tls_template_alignment = internal constant [4 x i8] c"\01\00\00\00", align 4
 
 define internal i32 @doubleArgs(double %a, i32 %b, double %c) {
 entry:
   ret i32 %b
 }
@@ skipping 996 matching lines @@
 entry:
   %cmp = fcmp true double %a, %b
   %cmp.ret_ext = zext i1 %cmp to i32
   ret i32 %cmp.ret_ext
 }
 ; CHECK: fcmpTrueDouble:
 ; CHECK: mov {{.*}}, 1
 
 define internal float @loadFloat(i32 %a) {
 entry:
-  %a.asptr = inttoptr i32 %a to float*
-  %v0 = load float* %a.asptr, align 4
+  %__1 = inttoptr i32 %a to float*
+  %v0 = load float* %__1, align 4
   ret float %v0
 }
 ; CHECK: loadFloat:
 ; CHECK: movss
 ; CHECK: fld
 
 define internal double @loadDouble(i32 %a) {
 entry:
-  %a.asptr = inttoptr i32 %a to double*
-  %v0 = load double* %a.asptr, align 8
+  %__1 = inttoptr i32 %a to double*
+  %v0 = load double* %__1, align 8
   ret double %v0
 }
 ; CHECK: loadDouble:
 ; CHECK: movsd
 ; CHECK: fld
 
 define internal void @storeFloat(i32 %a, float %value) {
 entry:
-  %a.asptr = inttoptr i32 %a to float*
-  store float %value, float* %a.asptr, align 4
+  %__2 = inttoptr i32 %a to float*
+  store float %value, float* %__2, align 4
   ret void
 }
 ; CHECK: storeFloat:
 ; CHECK: movss
 
 define internal void @storeDouble(i32 %a, double %value) {
 entry:
-  %a.asptr = inttoptr i32 %a to double*
-  store double %value, double* %a.asptr, align 8
+  %__2 = inttoptr i32 %a to double*
+  store double %value, double* %__2, align 8
   ret void
 }
 ; CHECK: storeDouble:
 ; CHECK: movsd
 
 define internal void @storeFloatConst(i32 %a) {
 entry:
   %a.asptr = inttoptr i32 %a to float*
   store float 0x3FF3AE1480000000, float* %a.asptr, align 4
   ret void
@@ skipping 29 matching lines @@
   %cond = select i1 %cmp, double %a, double %b
   ret double %cond
 }
 ; CHECK: selectDoubleVarVar:
 ; CHECK: ucomisd
 ; CHECK: ja .
 ; CHECK: fld
 
 ; ERRORS-NOT: ICE translation error
 ; DUMP-NOT: SZ