From 5d4c34aaade8422c8289daa8a5c95fab7830de37 Mon Sep 17 00:00:00 2001 From: Claudiu Zissulescu Date: Thu, 30 Nov 2017 15:42:01 +0100 Subject: [PATCH] [ARC] Update uses for hw-loop labels. Make sure we mark the hw-loop labels as beeing used. gcc/ 2017-09-19 Claudiu Zissulescu * config/arc/arc.c (hwloop_optimize): Update hw-loop's end/start labels number of usages. gcc/testsuite 2017-09-19 Claudiu Zissulescu * gcc.target/arc/loop-2.cpp: New test. From-SVN: r255274 --- gcc/ChangeLog | 5 +++++ gcc/config/arc/arc.c | 3 +++ gcc/testsuite/ChangeLog | 4 ++++ gcc/testsuite/gcc.target/arc/loop-2.cpp | 18 ++++++++++++++++++ 4 files changed, 30 insertions(+) create mode 100644 gcc/testsuite/gcc.target/arc/loop-2.cpp diff --git a/gcc/ChangeLog b/gcc/ChangeLog index ddcd9832f52..945490947df 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2017-11-30 Claudiu Zissulescu + + * config/arc/arc.c (hwloop_optimize): Update hw-loop's end/start + labels number of usages. + 2017-11-30 Claudiu Zissulescu * config/arc/arc.c (arc_cannot_substitue_mem_equiv_p): New diff --git a/gcc/config/arc/arc.c b/gcc/config/arc/arc.c index e739d60a64a..57ea502db4a 100644 --- a/gcc/config/arc/arc.c +++ b/gcc/config/arc/arc.c @@ -7501,6 +7501,9 @@ hwloop_optimize (hwloop_info loop) /* Insert the loop end label before the last instruction of the loop. */ emit_label_after (end_label, loop->last_insn); + /* Make sure we mark the begining and end label as used. */ + LABEL_NUSES (loop->end_label)++; + LABEL_NUSES (loop->start_label)++; return true; } diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index f12d075a1e6..1b5359d319e 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2017-11-30 Claudiu Zissulescu + + * gcc.target/arc/loop-2.cpp: New test. + 2017-11-30 Claudiu Zissulescu * gcc.target/arc/lra-1.c: New test. diff --git a/gcc/testsuite/gcc.target/arc/loop-2.cpp b/gcc/testsuite/gcc.target/arc/loop-2.cpp new file mode 100644 index 00000000000..d1dc917ba47 --- /dev/null +++ b/gcc/testsuite/gcc.target/arc/loop-2.cpp @@ -0,0 +1,18 @@ +/* { dg-options "-O2" } * +/* { dg-do assemble } */ + +/* This file fails to assemble if we forgot to increase the number of + uses for loop's start and end labels. */ +int a, c, d; +int *b; +void fn1(int p1) { + if (d == 5) + for (int i; i < p1; ++i) + if (c) + b[i] = c; + else + int t = a = t; + else + for (int i; i < p1; ++i) + b[i] = 0; +} -- 2.30.2