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

tests_lit/llvm2ice_tests/shift.ll

Index: tests_lit/llvm2ice_tests/shift.ll
diff --git a/tests_lit/llvm2ice_tests/shift.ll b/tests_lit/llvm2ice_tests/shift.ll
index 45d295d97f0a6de3506749c61806e5ad49078cce..674f4db75ec7e73238f51f74105966f6d8336084 100644
--- a/tests_lit/llvm2ice_tests/shift.ll
+++ b/tests_lit/llvm2ice_tests/shift.ll
@@ -1,18 +1,21 @@
 ; RUIN: %llvm2ice -verbose inst %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
 
-@i1 = common global i32 0, align 4
-@i2 = common global i32 0, align 4
-@u1 = common global i32 0, align 4
-@u2 = common global i32 0, align 4
+@i1 = global [4 x i8] zeroinitializer, align 4
+@i2 = global [4 x i8] zeroinitializer, align 4
+@u1 = global [4 x i8] zeroinitializer, align 4
 
 define void @conv1() {
 entry:
-  %v0 = load i32* @u1, align 1
+  %__0 = bitcast [4 x i8]* @u1 to i32*
+  %v0 = load i32* %__0, align 1
   %sext = shl i32 %v0, 24
   %v1 = ashr i32 %sext, 24
-  store i32 %v1, i32* @i1, align 1
+  %__4 = bitcast [4 x i8]* @i1 to i32*
+  store i32 %v1, i32* %__4, align 1
   ret void
   ; CHECK: shl eax, 24
   ; CHECK-NEXT: sar eax, 24
@@ -20,10 +23,12 @@ entry:
 
 define void @conv2() {
 entry:
-  %v0 = load i32* @u1, align 1
+  %__0 = bitcast [4 x i8]* @u1 to i32*
+  %v0 = load i32* %__0, align 1
   %sext1 = shl i32 %v0, 16
   %v1 = ashr i32 %sext1, 16
-  store i32 %v1, i32* @i2, align 1
+  %__4 = bitcast [4 x i8]* @i2 to i32*
+  store i32 %v1, i32* %__4, align 1
   ret void
   ; CHECK: shl eax, 16
   ; CHECK-NEXT: sar eax, 16