Author: Jessica Clarke Date: 2025-07-28T09:33:39+02:00 New Revision: 509ec13f268df6f1b56602df0421b8d9cf3a0227
URL: https://github.com/llvm/llvm-project/commit/509ec13f268df6f1b56602df0421b8d9cf3a0227 DIFF: https://github.com/llvm/llvm-project/commit/509ec13f268df6f1b56602df0421b8d9cf3a0227.diff LOG: [NFC][Sparc] Pre-commit a test showing inefficient and broken LD/GD TLS (cherry picked from commit dd36a6901249796a175c3058a50d97cc3a7ba52c) Added: llvm/test/CodeGen/SPARC/tls-sp.ll Modified: Removed: ################################################################################ diff --git a/llvm/test/CodeGen/SPARC/tls-sp.ll b/llvm/test/CodeGen/SPARC/tls-sp.ll new file mode 100644 index 0000000000000..928d1dcbe8300 --- /dev/null +++ b/llvm/test/CodeGen/SPARC/tls-sp.ll @@ -0,0 +1,111 @@ +; 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 + +;; TODO: Fix the code generation for these functions. + +@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, -144, %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: add %sp, -1, %sp +; 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 %sp, 1, %sp +; 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: add %sp, -1, %sp +; 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 %sp, 1, %sp +; 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 +} _______________________________________________ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits
