Add select instruction to Subzero bitcode reader.

tests_lit/reader_tests/select.ll

+; Tests if we can read select instrutions.
+
+; RUN: llvm-as < %s | pnacl-freeze \
+; RUN:              | %llvm2ice -notranslate -verbose=inst -build-on-read \
+; RUN:                -allow-pnacl-reader-error-recovery \
+; RUN:              | FileCheck %s
+
+define void @Seli1(i32 %p) {
+  %vc = trunc i32 %p to i1
+  %vt = trunc i32 %p to i1
+  %ve = trunc i32 %p to i1
+  %r = select i1 %vc, i1 %vt, i1 %ve
+  ret void
+}
+
+; CHECK:      define void @Seli1(i32 %__0) {
+; CHECK-NEXT: __0:
+; CHECK-NEXT:   %__1 = trunc i32 %__0 to i1
+; CHECK-NEXT:   %__2 = trunc i32 %__0 to i1
+; CHECK-NEXT:   %__3 = trunc i32 %__0 to i1
+; CHECK-NEXT:   %__4 = select i1 %__1, i1 %__2, i1 %__3
+; CHECK-NEXT:   ret void
+; CHECK-NEXT: }
+
+define void @Seli8(i32 %p) {
+  %vc = trunc i32 %p to i1
+  %vt = trunc i32 %p to i8
+  %ve = trunc i32 %p to i8
+  %r = select i1 %vc, i8 %vt, i8 %ve
+  ret void
+}
+
+; CHECK-NEXT: define void @Seli8(i32 %__0) {
+; CHECK-NEXT: __0:
+; CHECK-NEXT:   %__1 = trunc i32 %__0 to i1
+; CHECK-NEXT:   %__2 = trunc i32 %__0 to i8
+; CHECK-NEXT:   %__3 = trunc i32 %__0 to i8
+; CHECK-NEXT:   %__4 = select i1 %__1, i8 %__2, i8 %__3
+; CHECK-NEXT:   ret void
+; CHECK-NEXT: }
+
+define void @Seli16(i32 %p) {
+  %vc = trunc i32 %p to i1
+  %vt = trunc i32 %p to i16
+  %ve = trunc i32 %p to i16
+  %r = select i1 %vc, i16 %vt, i16 %ve
+  ret void
+}
+
+; CHECK-NEXT: define void @Seli16(i32 %__0) {
+; CHECK-NEXT: __0:
+; CHECK-NEXT:   %__1 = trunc i32 %__0 to i1
+; CHECK-NEXT:   %__2 = trunc i32 %__0 to i16
+; CHECK-NEXT:   %__3 = trunc i32 %__0 to i16
+; CHECK-NEXT:   %__4 = select i1 %__1, i16 %__2, i16 %__3
+; CHECK-NEXT:   ret void
+; CHECK-NEXT: }
+
+define void @Seli32(i32 %pc, i32 %pt, i32 %pe) {
+  %vc = trunc i32 %pc to i1
+  %r = select i1 %vc, i32 %pt, i32 %pe
+  ret void
+}
+
+; CHECK-NEXT: define void @Seli32(i32 %__0, i32 %__1, i32 %__2) {
+; CHECK-NEXT: __0:
+; CHECK-NEXT:   %__3 = trunc i32 %__0 to i1
+; CHECK-NEXT:   %__4 = select i1 %__3, i32 %__1, i32 %__2
+; CHECK-NEXT:   ret void
+; CHECK-NEXT: }
+
+define void @Seli64(i64 %pc, i64 %pt, i64 %pe) {
+  %vc = trunc i64 %pc to i1
+  %r = select i1 %vc, i64 %pt, i64 %pe
+  ret void
+}
+
+; CHECK-NEXT: define void @Seli64(i64 %__0, i64 %__1, i64 %__2) {
+; CHECK-NEXT: __0:
+; CHECK-NEXT:   %__3 = trunc i64 %__0 to i1
+; CHECK-NEXT:   %__4 = select i1 %__3, i64 %__1, i64 %__2
+; CHECK-NEXT:   ret void
+; CHECK-NEXT: }
+
+
+define void @SelFloat(i32 %pc, float %pt, float %pe) {
+  %vc = trunc i32 %pc to i1
+  %r = select i1 %vc, float %pt, float %pe
+  ret void
+}
+
+; CHECK-NEXT: define void @SelFloat(i32 %__0, float %__1, float %__2) {
+; CHECK-NEXT: __0:
+; CHECK-NEXT:   %__3 = trunc i32 %__0 to i1
+; CHECK-NEXT:   %__4 = select i1 %__3, float %__1, float %__2
+; CHECK-NEXT:   ret void
+; CHECK-NEXT: }
+
+define void @SelDouble(i32 %pc, double %pt, double %pe) {
+  %vc = trunc i32 %pc to i1
+  %r = select i1 %vc, double %pt, double %pe
+  ret void
+}
+
+; CHECK-NEXT: define void @SelDouble(i32 %__0, double %__1, double %__2) {
+; CHECK-NEXT: __0:
+; CHECK-NEXT:   %__3 = trunc i32 %__0 to i1
+; CHECK-NEXT:   %__4 = select i1 %__3, double %__1, double %__2
+; CHECK-NEXT:   ret void
+; CHECK-NEXT: }
+
+; Note: Only showing tests for vectors <16 x i8>, <4 x i32> and <4 x float>.
+
+define void @SelV16x8(i32 %pc, <16 x i8> %pt, <16 x i8> %pe) {
+  %vc = trunc i32 %pc to i1
+  %r = select i1 %vc, <16 x i8> %pt, <16 x i8> %pe
+  ret void
+}
+
+; CHECK-NEXT: define void @SelV16x8(i32 %__0, <16 x i8> %__1, <16 x i8> %__2) {
+; CHECK-NEXT: __0:
+; CHECK-NEXT:   %__3 = trunc i32 %__0 to i1
+; CHECK-NEXT:   %__4 = select i1 %__3, <16 x i8> %__1, <16 x i8> %__2
+; CHECK-NEXT:   ret void
+; CHECK-NEXT: }
+
+define void @SelV4x32(i32 %pc, <4 x i32> %pt, <4 x i32> %pe) {
+  %vc = trunc i32 %pc to i1
+  %r = select i1 %vc, <4 x i32> %pt, <4 x i32> %pe
+  ret void
+}
+
+; CHECK-NEXT: define void @SelV4x32(i32 %__0, <4 x i32> %__1, <4 x i32> %__2) {
+; CHECK-NEXT: __0:
+; CHECK-NEXT:   %__3 = trunc i32 %__0 to i1
+; CHECK-NEXT:   %__4 = select i1 %__3, <4 x i32> %__1, <4 x i32> %__2
+; CHECK-NEXT:   ret void
+; CHECK-NEXT: }
+
+define void @SelV4xfloat(i32 %pc, <4 x float> %pt, <4 x float> %pe) {
+  %vc = trunc i32 %pc to i1
+  %r = select i1 %vc, <4 x float> %pt, <4 x float> %pe
+  ret void
+}
+
+; CHECK-NEXT: define void @SelV4xfloat(i32 %__0, <4 x float> %__1, <4 x float> %__2) {
+; CHECK-NEXT: __0:
+; CHECK-NEXT:   %__3 = trunc i32 %__0 to i1
+; CHECK-NEXT:   %__4 = select i1 %__3, <4 x float> %__1, <4 x float> %__2
+; CHECK-NEXT:   ret void
+; CHECK-NEXT: }