diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/aarch64/aarch64-builtins.c | 35 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/aarch64/simd/lowering_tbaa.c | 30 |
2 files changed, 47 insertions, 18 deletions
diff --git a/gcc/config/aarch64/aarch64-builtins.c b/gcc/config/aarch64/aarch64-builtins.c index 5053bf0..416b4fc 100644 --- a/gcc/config/aarch64/aarch64-builtins.c +++ b/gcc/config/aarch64/aarch64-builtins.c @@ -2670,18 +2670,18 @@ aarch64_general_gimple_fold_builtin (unsigned int fcode, gcall *stmt, = get_mem_type_for_load_store(fcode); aarch64_simd_type_info simd_type = aarch64_simd_types[mem_type]; - tree elt_ptr_type = build_pointer_type (simd_type.eltype); + tree elt_ptr_type = build_pointer_type_for_mode (simd_type.eltype, + VOIDmode, true); tree zero = build_zero_cst (elt_ptr_type); - gimple_seq stmts = NULL; - tree base = gimple_convert (&stmts, elt_ptr_type, - args[0]); - if (stmts) - gsi_insert_seq_before (gsi, stmts, GSI_SAME_STMT); + /* Use element type alignment. */ + tree access_type + = build_aligned_type (simd_type.itype, + TYPE_ALIGN (simd_type.eltype)); new_stmt = gimple_build_assign (gimple_get_lhs (stmt), fold_build2 (MEM_REF, - simd_type.itype, - base, zero)); + access_type, + args[0], zero)); } break; @@ -2692,18 +2692,17 @@ aarch64_general_gimple_fold_builtin (unsigned int fcode, gcall *stmt, = get_mem_type_for_load_store(fcode); aarch64_simd_type_info simd_type = aarch64_simd_types[mem_type]; - tree elt_ptr_type = build_pointer_type (simd_type.eltype); + tree elt_ptr_type = build_pointer_type_for_mode (simd_type.eltype, + VOIDmode, true); tree zero = build_zero_cst (elt_ptr_type); - gimple_seq stmts = NULL; - tree base = gimple_convert (&stmts, elt_ptr_type, - args[0]); - if (stmts) - gsi_insert_seq_before (gsi, stmts, GSI_SAME_STMT); + /* Use element type alignment. */ + tree access_type + = build_aligned_type (simd_type.itype, + TYPE_ALIGN (simd_type.eltype)); new_stmt - = gimple_build_assign (fold_build2 (MEM_REF, - simd_type.itype, - base, - zero), args[1]); + = gimple_build_assign (fold_build2 (MEM_REF, access_type, + args[0], zero), + args[1]); } break; diff --git a/gcc/testsuite/gcc.target/aarch64/simd/lowering_tbaa.c b/gcc/testsuite/gcc.target/aarch64/simd/lowering_tbaa.c new file mode 100644 index 0000000..eaeae21 --- /dev/null +++ b/gcc/testsuite/gcc.target/aarch64/simd/lowering_tbaa.c @@ -0,0 +1,30 @@ +/* Tests the TBAA information of lowered AArch64 SIMD loads. */ +/* { dg-do run } */ +/* { dg-options "-save-temps -O2" } */ + +#include <arm_neon.h> + +void __attribute__((noipa)) +g (float *) +{ +} + +int32x4_t __attribute__((noipa)) +f (void) +{ + float a[4] = { 1, 2, 3, 4 }; + g (a); + a[0] = a[1] = a[2] = a[3] = 0; + void *volatile ptr = a; + return vld1q_s32 ((int32_t *) ptr); +} + +int +main (void) +{ + int32x4_t x = f (); + int32x4_t y = vdupq_n_s32 (0); + if (__builtin_memcmp (&x, &y, 16) != 0) + __builtin_abort (); + return 0; +} |