From 624c82977b9f9b282fdafba776bfd8948afa448e Mon Sep 17 00:00:00 2001 From: Christophe Lyon Date: Mon, 3 Apr 2017 12:56:48 +0000 Subject: gcc/ Backport from trunk r246419. 2017-03-23 Kyrylo Tkachov PR target/71436 * config/arm/arm.md (*load_multiple): Add reload_completed to matching condition. gcc/testsuite/ Backport from trunk r246419. 2017-03-23 Kyrylo Tkachov PR target/71436 * gcc.c-torture/compile/pr71436.c: New test. Change-Id: Ia02c434b2f33a91344a496e3ae83fa932ed3e963 --- gcc/config/arm/arm.md | 5 +++- gcc/testsuite/gcc.c-torture/compile/pr71436.c | 35 +++++++++++++++++++++++++++ 2 files changed, 39 insertions(+), 1 deletion(-) create mode 100644 gcc/testsuite/gcc.c-torture/compile/pr71436.c (limited to 'gcc') diff --git a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md index 5cc69974388..b097f48d7f6 100644 --- a/gcc/config/arm/arm.md +++ b/gcc/config/arm/arm.md @@ -11827,12 +11827,15 @@ ;; Patterns in ldmstm.md don't cover more than 4 registers. This pattern covers ;; large lists without explicit writeback generated for APCS_FRAME epilogue. +;; The operands are validated through the load_multiple_operation +;; match_parallel predicate rather than through constraints so enable it only +;; after reload. (define_insn "*load_multiple" [(match_parallel 0 "load_multiple_operation" [(set (match_operand:SI 2 "s_register_operand" "=rk") (mem:SI (match_operand:SI 1 "s_register_operand" "rk"))) ])] - "TARGET_32BIT" + "TARGET_32BIT && reload_completed" "* { arm_output_multireg_pop (operands, /*return_pc=*/false, diff --git a/gcc/testsuite/gcc.c-torture/compile/pr71436.c b/gcc/testsuite/gcc.c-torture/compile/pr71436.c new file mode 100644 index 00000000000..ab08d5d369c --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/pr71436.c @@ -0,0 +1,35 @@ +/* PR target/71436. */ + +#pragma pack(1) +struct S0 +{ + volatile int f0; + short f2; +}; + +void foo (struct S0 *); +int a, d; +static struct S0 b[5]; +static struct S0 c; +void fn1 (); +void +main () +{ + { + struct S0 e; + for (; d; fn1 ()) + { + { + a = 3; + for (; a >= 0; a -= 1) + { + { + e = c; + } + b[a] = e; + } + } + } + } + foo (b); +} -- cgit v1.2.3