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-rw-r--r--llvm/test/CodeGen/SPARC/tls-sp.ll105
1 files changed, 105 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/SPARC/tls-sp.ll b/llvm/test/CodeGen/SPARC/tls-sp.ll
new file mode 100644
index 0000000..de9af01
--- /dev/null
+++ b/llvm/test/CodeGen/SPARC/tls-sp.ll
@@ -0,0 +1,105 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc -mtriple=sparc -relocation-model=pic < %s | FileCheck --check-prefix=SPARC %s
+; RUN: llc -mtriple=sparc64 -relocation-model=pic < %s | FileCheck --check-prefix=SPARC64 %s
+
+@x = external thread_local global i8
+
+;; Test that we don't over-allocate stack space when calling __tls_get_addr
+;; with the call frame pseudos able to be eliminated.
+define ptr @no_alloca() nounwind {
+; SPARC-LABEL: no_alloca:
+; SPARC: ! %bb.0: ! %entry
+; SPARC-NEXT: save %sp, -96, %sp
+; SPARC-NEXT: .Ltmp0:
+; SPARC-NEXT: call .Ltmp1
+; SPARC-NEXT: .Ltmp2:
+; SPARC-NEXT: sethi %hi(_GLOBAL_OFFSET_TABLE_+(.Ltmp2-.Ltmp0)), %i0
+; SPARC-NEXT: .Ltmp1:
+; SPARC-NEXT: or %i0, %lo(_GLOBAL_OFFSET_TABLE_+(.Ltmp1-.Ltmp0)), %i0
+; SPARC-NEXT: add %i0, %o7, %i0
+; SPARC-NEXT: sethi %tgd_hi22(x), %i1
+; SPARC-NEXT: add %i1, %tgd_lo10(x), %i1
+; SPARC-NEXT: add %i0, %i1, %o0, %tgd_add(x)
+; SPARC-NEXT: call __tls_get_addr, %tgd_call(x)
+; SPARC-NEXT: nop
+; SPARC-NEXT: ret
+; SPARC-NEXT: restore %g0, %o0, %o0
+;
+; SPARC64-LABEL: no_alloca:
+; SPARC64: ! %bb.0: ! %entry
+; SPARC64-NEXT: save %sp, -128, %sp
+; SPARC64-NEXT: .Ltmp0:
+; SPARC64-NEXT: rd %pc, %o7
+; SPARC64-NEXT: .Ltmp2:
+; SPARC64-NEXT: sethi %hi(_GLOBAL_OFFSET_TABLE_+(.Ltmp2-.Ltmp0)), %i0
+; SPARC64-NEXT: .Ltmp1:
+; SPARC64-NEXT: or %i0, %lo(_GLOBAL_OFFSET_TABLE_+(.Ltmp1-.Ltmp0)), %i0
+; SPARC64-NEXT: add %i0, %o7, %i0
+; SPARC64-NEXT: sethi %tgd_hi22(x), %i1
+; SPARC64-NEXT: add %i1, %tgd_lo10(x), %i1
+; SPARC64-NEXT: add %i0, %i1, %o0, %tgd_add(x)
+; SPARC64-NEXT: call __tls_get_addr, %tgd_call(x)
+; SPARC64-NEXT: nop
+; SPARC64-NEXT: ret
+; SPARC64-NEXT: restore %g0, %o0, %o0
+entry:
+ %0 = call ptr @llvm.threadlocal.address.p0(ptr @x)
+ ret ptr %0
+}
+
+;; Test that %sp is valid for the call to __tls_get_addr. We store to a dynamic
+;; alloca in order to prevent eliminating any call frame pseudos from the call.
+define ptr @dynamic_alloca(i64 %n) nounwind {
+; SPARC-LABEL: dynamic_alloca:
+; SPARC: ! %bb.0: ! %entry
+; SPARC-NEXT: save %sp, -96, %sp
+; SPARC-NEXT: .Ltmp3:
+; SPARC-NEXT: call .Ltmp4
+; SPARC-NEXT: .Ltmp5:
+; SPARC-NEXT: sethi %hi(_GLOBAL_OFFSET_TABLE_+(.Ltmp5-.Ltmp3)), %i0
+; SPARC-NEXT: .Ltmp4:
+; SPARC-NEXT: or %i0, %lo(_GLOBAL_OFFSET_TABLE_+(.Ltmp4-.Ltmp3)), %i0
+; SPARC-NEXT: add %i0, %o7, %i0
+; SPARC-NEXT: sethi %tgd_hi22(x), %i2
+; SPARC-NEXT: add %i2, %tgd_lo10(x), %i2
+; SPARC-NEXT: add %i0, %i2, %o0, %tgd_add(x)
+; SPARC-NEXT: call __tls_get_addr, %tgd_call(x)
+; SPARC-NEXT: nop
+; SPARC-NEXT: add %i1, 7, %i0
+; SPARC-NEXT: and %i0, -8, %i0
+; SPARC-NEXT: sub %sp, %i0, %i0
+; SPARC-NEXT: add %i0, -8, %sp
+; SPARC-NEXT: mov 1, %i1
+; SPARC-NEXT: stb %i1, [%i0+88]
+; SPARC-NEXT: ret
+; SPARC-NEXT: restore %g0, %o0, %o0
+;
+; SPARC64-LABEL: dynamic_alloca:
+; SPARC64: ! %bb.0: ! %entry
+; SPARC64-NEXT: save %sp, -128, %sp
+; SPARC64-NEXT: .Ltmp3:
+; SPARC64-NEXT: rd %pc, %o7
+; SPARC64-NEXT: .Ltmp5:
+; SPARC64-NEXT: sethi %hi(_GLOBAL_OFFSET_TABLE_+(.Ltmp5-.Ltmp3)), %i1
+; SPARC64-NEXT: .Ltmp4:
+; SPARC64-NEXT: or %i1, %lo(_GLOBAL_OFFSET_TABLE_+(.Ltmp4-.Ltmp3)), %i1
+; SPARC64-NEXT: add %i1, %o7, %i1
+; SPARC64-NEXT: sethi %tgd_hi22(x), %i2
+; SPARC64-NEXT: add %i2, %tgd_lo10(x), %i2
+; SPARC64-NEXT: add %i1, %i2, %o0, %tgd_add(x)
+; SPARC64-NEXT: call __tls_get_addr, %tgd_call(x)
+; SPARC64-NEXT: nop
+; SPARC64-NEXT: add %i0, 15, %i0
+; SPARC64-NEXT: and %i0, -16, %i0
+; SPARC64-NEXT: sub %sp, %i0, %i0
+; SPARC64-NEXT: mov %i0, %sp
+; SPARC64-NEXT: mov 1, %i1
+; SPARC64-NEXT: stb %i1, [%i0+2175]
+; SPARC64-NEXT: ret
+; SPARC64-NEXT: restore %g0, %o0, %o0
+entry:
+ %0 = call ptr @llvm.threadlocal.address.p0(ptr @x)
+ %1 = alloca i8, i64 %n
+ store i8 1, ptr %1
+ ret ptr %0
+}