PNaCl: Handle nested structure types in -expand-struct-regs.

test/Transforms/NaCl/expand-struct-regs.ll

 ; RUN: opt %s -expand-struct-regs -S | FileCheck %s
 ; RUN: opt %s -expand-struct-regs -S | FileCheck %s -check-prefix=CLEANUP
 
 ; These two instructions should not appear in the output:
 ; CLEANUP-NOT: extractvalue
 ; CLEANUP-NOT: insertvalue
 
+target datalayout = "p:32:32:32"
+
 %struct = type { i8, i32 }
 
 
 define void @struct_load(%struct* %p, i8* %out0, i32* %out1) {
   %val = load %struct* %p
   %field0 = extractvalue %struct %val, 0
   %field1 = extractvalue %struct %val, 1
   store i8 %field0, i8* %out0
   store i32 %field1, i32* %out1
   ret void
 }
 ; CHECK: define void @struct_load
 ; CHECK-NEXT: %val.index{{.*}} = getelementptr %struct* %p, i32 0, i32 0
-; CHECK-NEXT: %val.field{{.*}} = load i8* %val.index{{.*}}, align 1
+; CHECK-NEXT: %val.field{{.*}} = load i8* %val.index{{.*}}
 ; CHECK-NEXT: %val.index{{.*}} = getelementptr %struct* %p, i32 0, i32 1
-; CHECK-NEXT: %val.field{{.*}} = load i32* %val.index{{.*}}, align 1
+; CHECK-NEXT: %val.field{{.*}} = load i32* %val.index{{.*}}
 ; CHECK-NEXT: store i8 %val.field{{.*}}, i8* %out0
 ; CHECK-NEXT: store i32 %val.field{{.*}}, i32* %out1
 
 
 define void @struct_store(%struct* %in_ptr, %struct* %out_ptr) {
   %val = load %struct* %in_ptr
   store %struct %val, %struct* %out_ptr
   ret void
 }
 ; CHECK: define void @struct_store
 ; CHECK-NEXT: %val.index{{.*}} = getelementptr %struct* %in_ptr, i32 0, i32 0
-; CHECK-NEXT: %val.field{{.*}} = load i8* %val.index{{.*}}, align 1
+; CHECK-NEXT: %val.field{{.*}} = load i8* %val.index{{.*}}
 ; CHECK-NEXT: %val.index{{.*}} = getelementptr %struct* %in_ptr, i32 0, i32 1
-; CHECK-NEXT: %val.field{{.*}} = load i32* %val.index{{.*}}, align 1
+; CHECK-NEXT: %val.field{{.*}} = load i32* %val.index{{.*}}
 ; CHECK-NEXT: %out_ptr.index{{.*}} = getelementptr %struct* %out_ptr, i32 0, i32 0
-; CHECK-NEXT: store i8 %val.field{{.*}}, i8* %out_ptr.index{{.*}}, align 1
+; CHECK-NEXT: store i8 %val.field{{.*}}, i8* %out_ptr.index{{.*}}
 ; CHECK-NEXT: %out_ptr.index{{.*}} = getelementptr %struct* %out_ptr, i32 0, i32 1
-; CHECK-NEXT: store i32 %val.field{{.*}}, i32* %out_ptr.index{{.*}}, align 1
+; CHECK-NEXT: store i32 %val.field{{.*}}, i32* %out_ptr.index{{.*}}
 
 
 ; Ensure that the pass works correctly across basic blocks.
 define void @across_basic_block(%struct* %in_ptr, %struct* %out_ptr) {
   %val = load %struct* %in_ptr
   br label %bb
 bb:
   store %struct %val, %struct* %out_ptr
   ret void
 }
@@ skipping 65 matching lines @@
 ; CHECK-NEXT: store i32 200, i32* %out1
 ; CHECK-NEXT: ret void
 
 
 define i32 @extract_from_constant() {
   %ev = extractvalue %struct { i8 99, i32 888 }, 1
   ret i32 %ev
 }
 ; CHECK: define i32 @extract_from_constant() {
 ; CHECK-NEXT: ret i32 888
+
+define void @nested_structs() {
+  %a1 = alloca i64
+  %a2 = alloca i32
+  %a3 = alloca { { i32, i64 } }
+  %a = insertvalue { i32, i64 } undef, i32 5, 0
+  %b = insertvalue { i32, i64 } %a, i64 6, 1
+  %c = insertvalue { { i32, i64 } } undef, { i32, i64 } %b, 0
+  %d = insertvalue { { { i32, i64 } }, i64 } undef, { { i32, i64 } } %c, 0
+  %e = insertvalue { { { i32, i64 } }, i64 } undef, { i32, i64 } %b, 0, 0
+
+  %f = extractvalue { { { i32, i64 } }, i64 } %d, 0, 0, 1
+  %g = extractvalue { { { i32, i64 } }, i64 } %e, 0, 0, 0
+  %h = extractvalue { { { i32, i64 } }, i64 } %e, 0
+  store i64 %f, i64* %a1
+  store i32 %g, i32* %a2
+  store { { i32, i64 } } %h, { { i32, i64 } }* %a3
+  ret void
+}
+; CHECK-LABEL: define void @nested_structs()
+; CHECK-NEXT:    %a1 = alloca i64
+; CHECK-NEXT:    %a2 = alloca i32
+; CHECK-NEXT:    %a3 = alloca { { i32, i64 } }
+; CHECK-NEXT:    store i64 6, i64* %a1
+; CHECK-NEXT:    store i32 5, i32* %a2
+; CHECK-NEXT:    %a3.index = getelementptr { { i32, i64 } }* %a3, i32 0, i32 0
+; CHECK-NEXT:    %a3.index.index = getelementptr { i32, i64 }* %a3.index, i32 0, i32 0
+; CHECK-NEXT:    store i32 5, i32* %a3.index.index
+; CHECK-NEXT:    %a3.index.index1 = getelementptr { i32, i64 }* %a3.index, i32 0, i32 1
+; CHECK-NEXT:    store i64 6, i64* %a3.index.index1
+
+define void @load_another_pass() {
+  %a = alloca { { i8, i64 } }
+  %b = load { { i8, i64 } }* %a
+  %c = load { { i8, i64 } }* %a, align 16
+  ret void
+}
+; CHECK-LABEL: define void @load_another_pass()
+; CHECK:         %b.field.field = load i8* %b.field.index
+; CHECK:         %b.field.field{{.*}} = load i64* %b.field.index{{.*}}
+; CHECK:         %c.field.field = load i8* %c.field.index, align 16
+; CHECK:         %c.field.field{{.*}} = load i64* %c.field.index{{.*}}, align 4
+
+define void @store_another_pass() {
+  %a = alloca { { i16, i64 } }
+  store { { i16, i64 } } undef, { { i16, i64 } }* %a
+  store { { i16, i64 } } undef, { { i16, i64 } }* %a, align 16
+  ret void
+}
+; CHECK-LABEL: define void @store_another_pass()
+; CHECK:         store i16 undef, i16* %a.index.index
+; CHECK:         store i64 undef, i64* %a.index.index{{.*}}
+; CHECK:         store i16 undef, i16* %a.index1.index, align 16
+; CHECK:         store i64 undef, i64* %a.index1.index{{.*}}, align 4
+
+define void @select_another_pass() {
+  %a = load { { i8, i64 } }* null
+  %b = load { { i8, i64 } }* null
+  %c = select i1 undef, { { i8, i64 } } %a, { { i8, i64 } } %b
+  store { { i8, i64 } } %c, { { i8, i64 } }* null
+  ret void
+}
+; CHECK-LABEL: define void @select_another_pass()
+; CHECK-NEXT:    %a.index = getelementptr { { i8, i64 } }* null, i32 0, i32 0
+; CHECK-NEXT:    %a.field.index = getelementptr { i8, i64 }* %a.index, i32 0, i32 0
+; CHECK-NEXT:    %a.field.field = load i8* %a.field.index
+; CHECK-NEXT:    %a.field.index2 = getelementptr { i8, i64 }* %a.index, i32 0, i32 1
+; CHECK-NEXT:    %a.field.field3 = load i64* %a.field.index2
+; CHECK-NEXT:    %b.index = getelementptr { { i8, i64 } }* null, i32 0, i32 0
+; CHECK-NEXT:    %b.field.index = getelementptr { i8, i64 }* %b.index, i32 0, i32 0
+; CHECK-NEXT:    %b.field.field = load i8* %b.field.index
+; CHECK-NEXT:    %b.field.index5 = getelementptr { i8, i64 }* %b.index, i32 0, i32 1
+; CHECK-NEXT:    %b.field.field6 = load i64* %b.field.index5
+; CHECK-NEXT:    %c.index.index = select i1 undef, i8 %a.field.field, i8 %b.field.field
+; CHECK-NEXT:    %c.index.index11 = select i1 undef, i64 %a.field.field3, i64 %b.field.field6
+; CHECK-NEXT:    %.index = getelementptr { { i8, i64 } }* null, i32 0, i32 0
+; CHECK-NEXT:    %.index.index = getelementptr { i8, i64 }* %.index, i32 0, i32 0
+; CHECK-NEXT:    store i8 %c.index.index, i8* %.index.index
+; CHECK-NEXT:    %.index.index13 = getelementptr { i8, i64 }* %.index, i32 0, i32 1
+; CHECK-NEXT:    store i64 %c.index.index11, i64* %.index.index13
+; CHECK-NEXT:    ret void
+
+define void @phi_another_pass() {
+entry:
+  br i1 false, label %next, label %not_next
+
+not_next:
+  %a = alloca { { i64, i16 }, i8* }
+  %b = load { { i64, i16 }, i8* }* %a
+  br label %next
+
+next:
+  %c = phi { { i64, i16 }, i8* } [ undef, %entry ], [ %b, %not_next ]
+  store { { i64, i16 }, i8* } %c, { { i64, i16 }, i8* }* null
+  ret void
+}
+; CHECK-LABEL: define void @phi_another_pass()
+; CHECK:         %c.index.index = phi i64 [ undef, %entry ], [ %b.field.field, %not_next ]
+; CHECK:         %c.index.index{{.*}} = phi i16 [ undef, %entry ], [ %b.field.field{{.*}}, %not_next ]
+; CHECK:         %c.index{{.*}} = phi i8* [ undef, %entry ], [ %b.field{{.*}}, %not_next ]