Rebased PNaCl localmods in LLVM to 223109

test/Transforms/NaCl/expand-tls.ll

Index: test/Transforms/NaCl/expand-tls.ll
diff --git a/test/Transforms/NaCl/expand-tls.ll b/test/Transforms/NaCl/expand-tls.ll
new file mode 100644
index 0000000000000000000000000000000000000000..76859194eb9ff74bb6860ba3418d9f079a51e6fe
--- /dev/null
+++ b/test/Transforms/NaCl/expand-tls.ll
@@ -0,0 +1,86 @@
+; RUN: opt < %s -nacl-expand-tls -S | FileCheck %s
+
+; All thread-local variables should be removed
+; RUN: opt < %s -nacl-expand-tls -S | FileCheck %s -check-prefix=NO_TLS
+
+; NO_TLS-NOT: thread_local
+
+@tvar1 = thread_local global i64 123
+@tvar2 = thread_local global i32 456
+
+
+; CHECK: %tls_init_template = type <{ i64, i32 }>
+; CHECK: %tls_struct = type <{ %tls_init_template, %tls_bss_template }>
+; CHECK: %tls_bss_template = type <{ [4 x i8] }>
+
+
+; CHECK: @__tls_template_start = internal constant %tls_init_template <{ i64 123, i32 456 }>
+
+; CHECK: @__tls_template_alignment = internal constant i32 8
+
+
+define i64* @get_tvar1() {
+  ret i64* @tvar1
+}
+; CHECK: define i64* @get_tvar1()
+; CHECK: %tls_raw = call i8* @llvm.nacl.read.tp()
+; CHECK: %tls_struct = bitcast i8* %tls_raw to %tls_struct*
+; CHECK: %field = getelementptr %tls_struct* %tls_struct, i32 -1, i32 0, i32 0
+; CHECK: ret i64* %field
+
+
+define i32* @get_tvar2() {
+  ret i32* @tvar2
+}
+; Much the same as for get_tvar1.
+; CHECK: define i32* @get_tvar2()
+; CHECK: %field = getelementptr %tls_struct* %tls_struct, i32 -1, i32 0, i32 1
+
+
+; Check that we define global variables for TLS templates
+
+@__tls_template_start = external global i8
+@__tls_template_tdata_end = external global i8
+@__tls_template_end = external global i8
+
+define i8* @get_tls_template_start() {
+  ret i8* @__tls_template_start
+}
+; CHECK: define i8* @get_tls_template_start()
+; CHECK: ret i8* bitcast (%tls_init_template* @__tls_template_start to i8*)
+
+define i8* @get_tls_template_tdata_end() {
+  ret i8* @__tls_template_tdata_end
+}
+; CHECK: define i8* @get_tls_template_tdata_end()
+; CHECK: ret i8* bitcast (%tls_init_template* getelementptr inbounds (%tls_init_template* @__tls_template_start, i32 1) to i8*)
+
+define i8* @get_tls_template_end() {
+  ret i8* @__tls_template_end
+}
+; CHECK: define i8* @get_tls_template_end()
+; CHECK: ret i8* bitcast (%tls_struct* getelementptr (%tls_struct* bitcast (%tls_init_template* @__tls_template_start to %tls_struct*), i32 1) to i8*)
+
+
+; Check that we define the TLS layout functions
+
+declare i32 @__nacl_tp_tls_offset(i32)
+declare i32 @__nacl_tp_tdb_offset(i32)
+
+define i32 @test_get_tp_tls_offset(i32 %tls_size) {
+  %offset = call i32 @__nacl_tp_tls_offset(i32 %tls_size)
+  ret i32 %offset
+}
+; Uses of the intrinsic are replaced with uses of a regular function.
+; CHECK: define i32 @test_get_tp_tls_offset
+; CHECK: call i32 @nacl_tp_tls_offset
+; NO_TLS-NOT: __nacl_tp_tls_offset
+
+define i32 @test_get_tp_tdb_offset(i32 %tdb_size) {
+  %offset = call i32 @__nacl_tp_tdb_offset(i32 %tdb_size)
+  ret i32 %offset
+}
+; Uses of the intrinsic are replaced with uses of a regular function.
+; CHECK: define i32 @test_get_tp_tdb_offset
+; CHECK: call i32 @nacl_tp_tdb_offset
+; NO_TLS-NOT: __nacl_tp_tdb_offset