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From: "ubizjak at gmail dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/53346] [4.6/4.7/4.8 Regression] Bad vectorization in the proc cptrf2 of rnflow.f90 Date: Thu, 17 May 2012 20:47:00 -0000 [thread overview] Message-ID: <bug-53346-4-WjdmbboQio@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-53346-4@http.gcc.gnu.org/bugzilla/> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53346 --- Comment #4 from Uros Bizjak <ubizjak at gmail dot com> 2012-05-17 20:09:42 UTC --- Instead of this: .L228: movl $0, -4(%rdx,%rax,4) addq $1, %rax cmpq %rax, %rsi jge .L228 vectorization generates following: movq %rdx, %rax movq %r9, %r8 andl $15, %eax shrq $2, %rax negq %rax andl $3, %eax cmpq %r9, %rax cmovbe %rax, %r8 cmpq $6, %r9 cmovbe %r9, %r8 testq %r8, %r8 je .L233 leaq 1(%r8), %rsi movl $1, %eax .p2align 4,,10 .p2align 3 .L176: movl $0, -4(%rdx,%rax,4) addq $1, %rax cmpq %rsi, %rax jne .L176 cmpq %r9, %r8 je .L182 .L174: movq %r9, %rbp subq %r8, %rbp movq %rbp, %r11 shrq $2, %r11 leaq 0(,%r11,4), %rbx testq %rbx, %rbx je .L181 pxor %xmm0, %xmm0 leaq (%rdx,%r8,4), %r8 xorl %esi, %esi .p2align 4,,10 .p2align 3 .L183: addq $1, %rsi movdqa %xmm0, (%r8) addq $16, %r8 cmpq %rsi, %r11 ja .L183 addq %rbx, %rax cmpq %rbx, %rbp je .L182 .p2align 4,,10 .p2align 3 .L181: movl $0, -4(%rdx,%rax,4) addq $1, %rax cmpq %rax, %r9 jge .L181 Whoa.
next prev parent reply other threads:[~2012-05-17 20:46 UTC|newest] Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-05-14 15:44 [Bug tree-optimization/53346] New: " dominiq at lps dot ens.fr 2012-05-15 9:54 ` [Bug tree-optimization/53346] " rguenth at gcc dot gnu.org 2012-05-15 12:55 ` dominiq at lps dot ens.fr 2012-05-17 18:35 ` ubizjak at gmail dot com 2012-05-17 20:47 ` ubizjak at gmail dot com [this message] 2012-05-18 11:49 ` rguenth at gcc dot gnu.org 2012-05-18 14:28 ` rguenth at gcc dot gnu.org 2012-05-18 14:32 ` rguenth at gcc dot gnu.org 2012-05-18 14:49 ` ubizjak at gmail dot com 2012-05-18 14:52 ` dominiq at lps dot ens.fr 2012-05-18 15:13 ` ubizjak at gmail dot com 2012-05-18 17:32 ` ubizjak at gmail dot com 2012-05-18 17:34 ` ubizjak at gmail dot com 2012-05-18 17:46 ` ubizjak at gmail dot com 2012-05-18 17:48 ` ubizjak at gmail dot com 2012-05-18 17:56 ` pinskia at gcc dot gnu.org 2012-05-18 18:27 ` hjl.tools at gmail dot com 2012-05-18 18:27 ` ubizjak at gmail dot com 2012-05-18 19:45 ` dominiq at lps dot ens.fr 2012-05-19 23:50 ` dominiq at lps dot ens.fr 2012-09-07 11:59 ` [Bug target/53346] " rguenth at gcc dot gnu.org 2012-11-14 22:19 ` hubicka at gcc dot gnu.org 2012-11-14 22:38 ` hubicka at gcc dot gnu.org 2012-12-31 9:20 ` [Bug target/53346] [4.6/4.7/4.8 Regression] Bad if conversion in " pinskia at gcc dot gnu.org 2012-12-31 9:41 ` pinskia at gcc dot gnu.org 2022-09-26 3:22 ` cvs-commit at gcc dot gnu.org 2022-09-26 3:24 ` crazylht at gmail dot com
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