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| author | Jakub Jelinek <jakub@redhat.com> | 2012-09-01 21:09:02 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2012-09-01 21:09:02 +0200 |
| commit | e89f93f66a38c13fc856a88d2929800c4f36b9d3 (patch) | |
| tree | 4b1a87a00d117046f7724c58b018d003fbdccbd2 /gcc | |
| parent | dcf8468f1cad977c1f82aa008aecc74f5c858161 (diff) | |
| download | gcc-e89f93f66a38c13fc856a88d2929800c4f36b9d3.zip gcc-e89f93f66a38c13fc856a88d2929800c4f36b9d3.tar.gz gcc-e89f93f66a38c13fc856a88d2929800c4f36b9d3.tar.bz2 | |
re PR target/54436 (Compiling some regular C++ code gives assembler '700415 shortened to 255' warning)
PR target/54436
* config/i386/i386.md (*mov<mode>_insv_1_rex64, *movsi_insv_1): If
operands[1] is CONST_INT_P, convert it to QImode before printing.
* gcc.dg/torture/pr54436.c: New test.
From-SVN: r190849
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/i386/i386.md | 12 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/torture/pr54436.c | 38 |
4 files changed, 59 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 45325cb..c9790e8 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2012-09-01 Jakub Jelinek <jakub@redhat.com> + + PR target/54436 + * config/i386/i386.md (*mov<mode>_insv_1_rex64, *movsi_insv_1): If + operands[1] is CONST_INT_P, convert it to QImode before printing. + 2012-09-01 Andrew Pinski <apinski@cavium.com> * simplify-rtx.c (simplify_unary_operation_1 <case TRUNCATE>): diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index 3300017..16cee7a 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -2690,7 +2690,11 @@ (const_int 8)) (match_operand:SWI48x 1 "nonmemory_operand" "Qn"))] "TARGET_64BIT" - "mov{b}\t{%b1, %h0|%h0, %b1}" +{ + if (CONST_INT_P (operands[1])) + operands[1] = simplify_gen_subreg (QImode, operands[1], <MODE>mode, 0); + return "mov{b}\t{%b1, %h0|%h0, %b1}"; +} [(set_attr "type" "imov") (set_attr "mode" "QI")]) @@ -2700,7 +2704,11 @@ (const_int 8)) (match_operand:SI 1 "general_operand" "Qmn"))] "!TARGET_64BIT" - "mov{b}\t{%b1, %h0|%h0, %b1}" +{ + if (CONST_INT_P (operands[1])) + operands[1] = simplify_gen_subreg (QImode, operands[1], SImode, 0); + return "mov{b}\t{%b1, %h0|%h0, %b1}"; +} [(set_attr "type" "imov") (set_attr "mode" "QI")]) diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 648b014..6c43305 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2012-09-01 Jakub Jelinek <jakub@redhat.com> + + PR target/54436 + * gcc.dg/torture/pr54436.c: New test. + 2012-09-01 Andrew Pinski <apinski@cavium.com> * gcc.target/mips/truncate-8.c: New testcase. diff --git a/gcc/testsuite/gcc.dg/torture/pr54436.c b/gcc/testsuite/gcc.dg/torture/pr54436.c new file mode 100644 index 0000000..4bce324 --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/pr54436.c @@ -0,0 +1,38 @@ +/* PR target/54436 */ +/* { dg-do assemble } */ + +#if __SIZEOF_SHORT__ == 2 && __SIZEOF_LONG_LONG__ == 8 +static inline unsigned short +baz (unsigned short *x) +{ + union U { unsigned short a; unsigned char b[2]; } u = { *x }; + u.b[0] = ((u.b[0] * 0x0802ULL & 0x22110ULL) + | (u.b[0] * 0x8020ULL & 0x88440ULL)) * 0x10101ULL >> 16; + u.b[1] = ((u.b[1] * 0x0802ULL & 0x22110ULL) + | (u.b[1] * 0x8020ULL & 0x88440ULL)) * 0x10101ULL >> 16; + unsigned char t = u.b[0]; + u.b[0] = u.b[1]; + u.b[1] = t; + return u.a; +} + +static inline unsigned long long +bar (unsigned long long *x) +{ + union U { unsigned long long a; unsigned short b[4]; } u = { *x }; + u.b[0] = baz (&u.b[0]); + return u.a; +} + +void +foo (void) +{ + unsigned long long l = -1ULL; + __asm volatile ("" : : "r" (bar (&l))); +} +#else +void +foo (void) +{ +} +#endif |