[ARM] PR target/68648: Fold NOT of CONST_INT in andsi_iorsi3_notsi splitter
PR target/68648 * config/arm/arm.md (*andsi_iorsi3_notsi): Try to simplify the complement of operands[3] during splitting. * gcc.c-torture/execute/pr68648.c: New test. From-SVN: r231675
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2015-12-16 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
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PR target/68648
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* config/arm/arm.md (*andsi_iorsi3_notsi): Try to simplify
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the complement of operands[3] during splitting.
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2015-12-16 Richard Biener <rguenther@suse.de>
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2015-12-16 Richard Biener <rguenther@suse.de>
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PR tree-optimization/68892
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PR tree-optimization/68892
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@ -3228,8 +3228,22 @@
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"#" ; "orr%?\\t%0, %1, %2\;bic%?\\t%0, %0, %3"
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"#" ; "orr%?\\t%0, %1, %2\;bic%?\\t%0, %0, %3"
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"&& reload_completed"
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"&& reload_completed"
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[(set (match_dup 0) (ior:SI (match_dup 1) (match_dup 2)))
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[(set (match_dup 0) (ior:SI (match_dup 1) (match_dup 2)))
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(set (match_dup 0) (and:SI (not:SI (match_dup 3)) (match_dup 0)))]
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(set (match_dup 0) (and:SI (match_dup 4) (match_dup 5)))]
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""
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{
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/* If operands[3] is a constant make sure to fold the NOT into it
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to avoid creating a NOT of a CONST_INT. */
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rtx not_rtx = simplify_gen_unary (NOT, SImode, operands[3], SImode);
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if (CONST_INT_P (not_rtx))
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{
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operands[4] = operands[0];
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operands[5] = not_rtx;
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}
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else
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{
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operands[5] = operands[0];
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operands[4] = not_rtx;
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}
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}
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[(set_attr "length" "8")
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[(set_attr "length" "8")
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(set_attr "ce_count" "2")
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(set_attr "ce_count" "2")
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(set_attr "predicable" "yes")
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(set_attr "predicable" "yes")
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@ -1,3 +1,8 @@
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2015-12-16 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
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PR target/68648
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* gcc.c-torture/execute/pr68648.c: New test.
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2015-12-16 Richard Biener <rguenther@suse.de>
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2015-12-16 Richard Biener <rguenther@suse.de>
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PR tree-optimization/68892
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PR tree-optimization/68892
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20
gcc/testsuite/gcc.c-torture/execute/pr68648.c
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20
gcc/testsuite/gcc.c-torture/execute/pr68648.c
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int __attribute__ ((noinline))
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foo (void)
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{
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return 123;
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}
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int __attribute__ ((noinline))
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bar (void)
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{
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int c = 1;
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c |= 4294967295 ^ (foo () | 4073709551608);
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return c;
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}
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int
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main ()
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{
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if (bar () != 0x83fd4005)
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__builtin_abort ();
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}
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