Vendor import of llvm trunk r178860:vendor/llvm/llvm-trunk-r178860

http://llvm.org/svn/llvm-project/llvm/trunk@178860

1 files changed, 121 insertions, 0 deletions

diff --git a/test/CodeGen/AArch64/tls-dynamics.ll b/test/CodeGen/AArch64/tls-dynamics.ll
new file mode 100644
index 000000000000..cdfd11783c23
--- /dev/null
+++ b/test/CodeGen/AArch64/tls-dynamics.ll
@@ -0,0 +1,121 @@
+; RUN: llc -mtriple=aarch64-none-linux-gnu -relocation-model=pic -verify-machineinstrs < %s | FileCheck %s
+; RUN: llc -mtriple=aarch64-none-linux-gnu -relocation-model=pic -filetype=obj < %s | llvm-objdump -r - | FileCheck --check-prefix=CHECK-RELOC %s
+
+@general_dynamic_var = external thread_local global i32
+
+define i32 @test_generaldynamic() {
+; CHECK: test_generaldynamic:
+
+  %val = load i32* @general_dynamic_var
+  ret i32 %val
+
+; CHECK: adrp x[[TLSDESC_HI:[0-9]+]], :tlsdesc:general_dynamic_var
+; CHECK: add x0, x[[TLSDESC_HI]], #:tlsdesc_lo12:general_dynamic_var
+; CHECK: ldr [[CALLEE:x[0-9]+]], [x[[TLSDESC_HI]], #:tlsdesc_lo12:general_dynamic_var]
+; CHECK: .tlsdesccall general_dynamic_var
+; CHECK-NEXT: blr [[CALLEE]]
+
+; CHECK: mrs x[[TP:[0-9]+]], tpidr_el0
+; CHECK: ldr w0, [x[[TP]], x0]
+
+; CHECK-RELOC: R_AARCH64_TLSDESC_ADR_PAGE
+; CHECK-RELOC: R_AARCH64_TLSDESC_ADD_LO12_NC
+; CHECK-RELOC: R_AARCH64_TLSDESC_LD64_LO12_NC
+; CHECK-RELOC: R_AARCH64_TLSDESC_CALL
+
+}
+
+define i32* @test_generaldynamic_addr() {
+; CHECK: test_generaldynamic_addr:
+
+  ret i32* @general_dynamic_var
+
+; CHECK: adrp x[[TLSDESC_HI:[0-9]+]], :tlsdesc:general_dynamic_var
+; CHECK: add x0, x[[TLSDESC_HI]], #:tlsdesc_lo12:general_dynamic_var
+; CHECK: ldr [[CALLEE:x[0-9]+]], [x[[TLSDESC_HI]], #:tlsdesc_lo12:general_dynamic_var]
+; CHECK: .tlsdesccall general_dynamic_var
+; CHECK-NEXT: blr [[CALLEE]]
+
+; CHECK: mrs [[TP:x[0-9]+]], tpidr_el0
+; CHECK: add x0, [[TP]], x0
+
+; CHECK-RELOC: R_AARCH64_TLSDESC_ADR_PAGE
+; CHECK-RELOC: R_AARCH64_TLSDESC_ADD_LO12_NC
+; CHECK-RELOC: R_AARCH64_TLSDESC_LD64_LO12_NC
+; CHECK-RELOC: R_AARCH64_TLSDESC_CALL
+
+}
+
+@local_dynamic_var = external thread_local(localdynamic) global i32
+
+define i32 @test_localdynamic() {
+; CHECK: test_localdynamic:
+
+  %val = load i32* @local_dynamic_var
+  ret i32 %val
+
+; CHECK: adrp x[[TLSDESC_HI:[0-9]+]], :tlsdesc:_TLS_MODULE_BASE_
+; CHECK: add x0, x[[TLSDESC_HI]], #:tlsdesc_lo12:_TLS_MODULE_BASE_
+; CHECK: ldr [[CALLEE:x[0-9]+]], [x[[TLSDESC_HI]], #:tlsdesc_lo12:_TLS_MODULE_BASE_]
+; CHECK: .tlsdesccall _TLS_MODULE_BASE_
+; CHECK-NEXT: blr [[CALLEE]]
+
+; CHECK: movz [[DTP_OFFSET:x[0-9]+]], #:dtprel_g1:local_dynamic_var
+; CHECK: movk [[DTP_OFFSET]], #:dtprel_g0_nc:local_dynamic_var
+
+; CHECK: ldr w0, [x0, [[DTP_OFFSET]]]
+
+; CHECK-RELOC: R_AARCH64_TLSDESC_ADR_PAGE
+; CHECK-RELOC: R_AARCH64_TLSDESC_ADD_LO12_NC
+; CHECK-RELOC: R_AARCH64_TLSDESC_LD64_LO12_NC
+; CHECK-RELOC: R_AARCH64_TLSDESC_CALL
+
+}
+
+define i32* @test_localdynamic_addr() {
+; CHECK: test_localdynamic_addr:
+
+  ret i32* @local_dynamic_var
+
+; CHECK: adrp x[[TLSDESC_HI:[0-9]+]], :tlsdesc:_TLS_MODULE_BASE_
+; CHECK: add x0, x[[TLSDESC_HI]], #:tlsdesc_lo12:_TLS_MODULE_BASE_
+; CHECK: ldr [[CALLEE:x[0-9]+]], [x[[TLSDESC_HI]], #:tlsdesc_lo12:_TLS_MODULE_BASE_]
+; CHECK: .tlsdesccall _TLS_MODULE_BASE_
+; CHECK-NEXT: blr [[CALLEE]]
+
+; CHECK: movz [[DTP_OFFSET:x[0-9]+]], #:dtprel_g1:local_dynamic_var
+; CHECK: movk [[DTP_OFFSET]], #:dtprel_g0_nc:local_dynamic_var
+
+; CHECK: add x0, x0, [[DTP_OFFSET]]
+
+; CHECK-RELOC: R_AARCH64_TLSDESC_ADR_PAGE
+; CHECK-RELOC: R_AARCH64_TLSDESC_ADD_LO12_NC
+; CHECK-RELOC: R_AARCH64_TLSDESC_LD64_LO12_NC
+; CHECK-RELOC: R_AARCH64_TLSDESC_CALL
+
+}
+
+; The entire point of the local-dynamic access model is to have a single call to
+; the expensive resolver. Make sure we achieve that goal.
+
+@local_dynamic_var2 = external thread_local(localdynamic) global i32
+
+define i32 @test_localdynamic_deduplicate() {
+; CHECK: test_localdynamic_deduplicate:
+
+  %val = load i32* @local_dynamic_var
+  %val2 = load i32* @local_dynamic_var2
+
+  %sum = add i32 %val, %val2
+  ret i32 %sum
+
+; CHECK: adrp x[[TLSDESC_HI:[0-9]+]], :tlsdesc:_TLS_MODULE_BASE_
+; CHECK: add x0, x[[TLSDESC_HI]], #:tlsdesc_lo12:_TLS_MODULE_BASE_
+; CHECK: ldr [[CALLEE:x[0-9]+]], [x[[TLSDESC_HI]], #:tlsdesc_lo12:_TLS_MODULE_BASE_]
+; CHECK: .tlsdesccall _TLS_MODULE_BASE_
+; CHECK-NEXT: blr [[CALLEE]]
+
+; CHECK-NOT: _TLS_MODULE_BASE_
+
+; CHECK: ret
+}