From 8df5e205235716010acf9dc446eae06fd7d26223 Mon Sep 17 00:00:00 2001 From: ktkachov Date: Wed, 25 Jan 2017 11:10:30 +0000 Subject: [PATCH] [ARM] PR target/79145 Fix xordi3 expander for immediate operands in iWMMXt PR target/79145 * config/arm/arm.md (xordi3): Force constant operand into a register for TARGET_IWMMXT. * gcc.target/arm/pr79145.c: New test. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@244894 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/ChangeLog | 6 ++++++ gcc/config/arm/arm.md | 9 ++++++++- gcc/testsuite/ChangeLog | 5 +++++ gcc/testsuite/gcc.target/arm/pr79145.c | 16 ++++++++++++++++ 4 files changed, 35 insertions(+), 1 deletion(-) create mode 100644 gcc/testsuite/gcc.target/arm/pr79145.c diff --git a/gcc/ChangeLog b/gcc/ChangeLog index c648e574896..6bd1c69982f 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,11 @@ 2016-01-25 Kyrylo Tkachov + PR target/79145 + * config/arm/arm.md (xordi3): Force constant operand into a register + for TARGET_IWMMXT. + +2016-01-25 Kyrylo Tkachov + * doc/invoke.texi (-fstore-merging): Correct default optimization levels at which it is enabled. (-O): Move -fstore-merging from list to... diff --git a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md index 446fb226f6a..8720a7178d3 100644 --- a/gcc/config/arm/arm.md +++ b/gcc/config/arm/arm.md @@ -3313,7 +3313,14 @@ (xor:DI (match_operand:DI 1 "s_register_operand" "") (match_operand:DI 2 "arm_xordi_operand" "")))] "TARGET_32BIT" - "" + { + /* The iWMMXt pattern for xordi3 accepts only register operands but we want + to reuse this expander for all TARGET_32BIT targets so just force the + constants into a register. Unlike for the anddi3 and iordi3 there are + no NEON instructions that take an immediate. */ + if (TARGET_IWMMXT && !REG_P (operands[2])) + operands[2] = force_reg (DImode, operands[2]); + } ) (define_insn_and_split "*xordi3_insn" diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 65cae6f3837..9eb748f9fde 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2016-01-25 Kyrylo Tkachov + + PR target/79145 + * gcc.target/arm/pr79145.c: New test. + 2017-01-25 Richard Biener PR debug/78363 diff --git a/gcc/testsuite/gcc.target/arm/pr79145.c b/gcc/testsuite/gcc.target/arm/pr79145.c new file mode 100644 index 00000000000..66782440039 --- /dev/null +++ b/gcc/testsuite/gcc.target/arm/pr79145.c @@ -0,0 +1,16 @@ +/* { dg-do compile } */ +/* { dg-skip-if "Test is specific to the iWMMXt" { arm*-*-* } { "-mcpu=*" } { "-mcpu=iwmmxt" } } */ +/* { dg-skip-if "Test is specific to the iWMMXt" { arm*-*-* } { "-mabi=*" } { "-mabi=iwmmxt" } } */ +/* { dg-skip-if "Test is specific to the iWMMXt" { arm*-*-* } { "-march=*" } { "-march=iwmmxt" } } */ +/* { dg-skip-if "Test is specific to ARM mode" { arm*-*-* } { "-mthumb" } { "" } } */ +/* { dg-require-effective-target arm32 } */ +/* { dg-require-effective-target arm_iwmmxt_ok } */ +/* { dg-options "-mcpu=iwmmxt" } */ + +int +main (void) +{ + volatile long long t1; + t1 ^= 0x55; + return 0; +} -- 2.11.4.GIT