Hi, Gentle ping this: https://gcc.gnu.org/pipermail/gcc-patches/2022-February/590958.html Thanks
On 15/3/2022 上午 10:06, HAO CHEN GUI wrote: > Hi, > Gentle ping this: > https://gcc.gnu.org/pipermail/gcc-patches/2022-February/590958.html > Thanks > > On 28/2/2022 上午 11:17, HAO CHEN GUI wrote: >> Hi, >> This patch corrects the match pattern in pr56605.c. The former pattern >> is wrong and test case fails with GCC11. It should match following insn on >> each subtarget after mode promotion is disabled. The patch need to be >> backported to GCC11. >> >> //gimple >> _17 = (unsigned int) _20; >> prolog_loop_niters.4_23 = _17 & 3; >> >> //rtl >> (insn 19 18 20 2 (parallel [ >> (set (reg:CC 208) >> (compare:CC (and:SI (subreg:SI (reg:DI 207) 0) >> (const_int 3 [0x3])) >> (const_int 0 [0]))) >> (set (reg:SI 129 [ prolog_loop_niters.5 ]) >> (and:SI (subreg:SI (reg:DI 207) 0) >> (const_int 3 [0x3]))) >> ]) 197 {*andsi3_imm_mask_dot2} >> >> >> Bootstrapped and tested on powerpc64-linux BE/LE and AIX with no >> regressions. >> Is this okay for trunk and GCC11? Any recommendations? Thanks a lot. >> >> ChangeLog >> 2022-02-28 Haochen Gui <guih...@linux.ibm.com> >> >> gcc/testsuite/ >> PR target/102146 >> * gcc.target/powerpc/pr56605.c: Correct match pattern in combine pass. >> >> >> patch.diff >> diff --git a/gcc/testsuite/gcc.target/powerpc/pr56605.c >> b/gcc/testsuite/gcc.target/powerpc/pr56605.c >> index fdedbfc573d..231d808aa99 100644 >> --- a/gcc/testsuite/gcc.target/powerpc/pr56605.c >> +++ b/gcc/testsuite/gcc.target/powerpc/pr56605.c >> @@ -11,5 +11,5 @@ void foo (short* __restrict sb, int* __restrict ia) >> ia[i] = (int) sb[i]; >> } >> >> -/* { dg-final { scan-rtl-dump-times {\(compare:CC >> \((?:and|zero_extend):(?:DI) \((?:sub)?reg:[SD]I} 1 "combine" } } */ >> +/* { dg-final { scan-rtl-dump-times {\(compare:CC \(and:SI \(subreg:SI >> \(reg:DI} 1 "combine" } } */ >>
