| Message ID | 54482653.5060805@linaro.org |
|---|---|
| State | New |
| Headers | show |
On Wed, Oct 22, 2014 at 10:49 PM, Michael Collison <michael.collison@linaro.org> wrote: > > Patch that removes extraneous comment attached. > > The CLZ_DEFINED_VALUE_AT_ZERO macro is hard coded to return 32. For the > vector intrinsic vclz this is incorrect and should return the value vclz_{s,u}8 ... > eight. The CTZ_DEFINED_VALUE_AT_ZERO has the same issue. The patch is ok . Sorry about the delay in reviewing this. Ramana > > Tested on arm-linux-gnueabihf, arm-linux-gnueabi. > > 2014-10-08 Michael Collison <michael.collison@linaro.com> > > * config/arm/arm.h (CLZ_DEFINED_VALUE_AT_ZERO) : Update > to support vector modes > (CTZ_DEFINED_VALUE_AT_ZERO): Ditto > > On 10/09/2014 12:55 AM, Tejas Belagod wrote: >> >> On 09/10/14 08:05, Michael Collison wrote: >>> >>> >>> The CLZ_DEFINED_VALUE_AT_ZERO macro is harded to return 32. For the >>> vector intrinsic vclz this is incorrect and should return the value >>> eight. The CTZ_DEFINED_VALUE_AT_ZERO has the same issue. >>> >>> Tested on arm-linux-gnueabihf, arm-linux-gnueabi. >>> >>> 2014-10-08 Michael Collison <michael.collison@linaro.com> >>> >>> * config/arm/arm.h (CLZ_DEFINED_VALUE_AT_ZERO) : Update >>> to support vector modes >>> (CTZ_DEFINED_VALUE_AT_ZERO): Ditto >>> >> >> Update comment? >> >> /* The arm5 clz instruction returns 32. */ >> >> >> Thanks, >> Tejas. >> > > -- > Michael Collison > Linaro Toolchain Working Group > michael.collison@linaro.org >
> On Wed, Oct 22, 2014 at 10:49 PM, Michael Collison <michael.collison@linaro.org> > wrote: > > > > Patch that removes extraneous comment attached. > > > > The CLZ_DEFINED_VALUE_AT_ZERO macro is hard coded to return 32. For > > the vector intrinsic vclz this is incorrect and should return the > > value > > vclz_{s,u}8 ... > > > eight. The CTZ_DEFINED_VALUE_AT_ZERO has the same issue. > > The patch is ok . Sorry about the delay in reviewing this. > > Ramana > Hello, Can anybody backport this patch for the 4.8/4.9 branch? They have the same issue too. Thanks.
On 12 November 2014 04:50, Yangfei (Felix) <felix.yang@huawei.com> wrote: >> On Wed, Oct 22, 2014 at 10:49 PM, Michael Collison <michael.collison@linaro.org> >> wrote: >> > >> > Patch that removes extraneous comment attached. >> > >> > The CLZ_DEFINED_VALUE_AT_ZERO macro is hard coded to return 32. For >> > the vector intrinsic vclz this is incorrect and should return the >> > value >> >> vclz_{s,u}8 ... >> >> > eight. The CTZ_DEFINED_VALUE_AT_ZERO has the same issue. >> >> The patch is ok . Sorry about the delay in reviewing this. >> >> Ramana >> > > > Hello, > > Can anybody backport this patch for the 4.8/4.9 branch? They have the same issue too. Thanks. > If it does not reach FSF 4.8/4.9 branches, we'll probably backport it to linaro-4.9 in our December release. Christophe.
On 12 November 2014 04:50, Yangfei (Felix) <felix.yang@huawei.com> wrote: >> On Wed, Oct 22, 2014 at 10:49 PM, Michael Collison <michael.collison@linaro.org> >> wrote: >> > >> > Patch that removes extraneous comment attached. >> > >> > The CLZ_DEFINED_VALUE_AT_ZERO macro is hard coded to return 32. For >> > the vector intrinsic vclz this is incorrect and should return the >> > value >> >> vclz_{s,u}8 ... >> >> > eight. The CTZ_DEFINED_VALUE_AT_ZERO has the same issue. >> >> The patch is ok . Sorry about the delay in reviewing this. >> >> Ramana >> > > > Hello, > > Can anybody backport this patch for the 4.8/4.9 branch? They have the same issue too. Thanks. > Hi, I can take care of the backport, provided a maintainer such as Ramana approves it first. The original PR (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63365) is against 4.9.2, but the bug was present in 4.8 too. OK to backport it to 4.8 and 4.9? Thanks, Christophe.
On 12/11/14 13:06, Christophe Lyon wrote: > On 12 November 2014 04:50, Yangfei (Felix) <felix.yang@huawei.com> wrote: >>> On Wed, Oct 22, 2014 at 10:49 PM, Michael Collison <michael.collison@linaro.org> >>> wrote: >>>> >>>> Patch that removes extraneous comment attached. >>>> >>>> The CLZ_DEFINED_VALUE_AT_ZERO macro is hard coded to return 32. For >>>> the vector intrinsic vclz this is incorrect and should return the >>>> value >>> >>> vclz_{s,u}8 ... >>> >>>> eight. The CTZ_DEFINED_VALUE_AT_ZERO has the same issue. >>> >>> The patch is ok . Sorry about the delay in reviewing this. >>> >>> Ramana >>> >> >> >> Hello, >> >> Can anybody backport this patch for the 4.8/4.9 branch? They have the same issue too. Thanks. >> > > Hi, > > I can take care of the backport, provided a maintainer such as Ramana > approves it first. > > The original PR (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63365) > is against 4.9.2, but the bug was present in 4.8 too. > > OK to backport it to 4.8 and 4.9? > Ok by me unless an RM objects in the next 24 hours. Ramana > Thanks, > > Christophe. >
On 12 November 2014 14:46, Ramana Radhakrishnan <ramana.radhakrishnan@arm.com> wrote: > > > On 12/11/14 13:06, Christophe Lyon wrote: >> >> On 12 November 2014 04:50, Yangfei (Felix) <felix.yang@huawei.com> wrote: >>>> >>>> On Wed, Oct 22, 2014 at 10:49 PM, Michael Collison >>>> <michael.collison@linaro.org> >>>> wrote: >>>>> >>>>> >>>>> Patch that removes extraneous comment attached. >>>>> >>>>> The CLZ_DEFINED_VALUE_AT_ZERO macro is hard coded to return 32. For >>>>> the vector intrinsic vclz this is incorrect and should return the >>>>> value >>>> >>>> >>>> vclz_{s,u}8 ... >>>> >>>>> eight. The CTZ_DEFINED_VALUE_AT_ZERO has the same issue. >>>> >>>> >>>> The patch is ok . Sorry about the delay in reviewing this. >>>> >>>> Ramana >>>> >>> >>> >>> Hello, >>> >>> Can anybody backport this patch for the 4.8/4.9 branch? They have >>> the same issue too. Thanks. >>> >> >> Hi, >> >> I can take care of the backport, provided a maintainer such as Ramana >> approves it first. >> >> The original PR (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63365) >> is against 4.9.2, but the bug was present in 4.8 too. >> >> OK to backport it to 4.8 and 4.9? >> > > Ok by me unless an RM objects in the next 24 hours. > Committed: - 4.9 branch: r217488. - 4.8 branch: r217490. > Ramana > > >> Thanks, >> >> Christophe. >> >
--- ../../../../linaro-gcc4_9_git/gcc/config/arm/arm.h 2014-10-08 13:49:01.109819957 -0700 +++ ./arm.h 2014-10-22 14:41:10.767130430 -0700 @@ -2137,9 +2137,10 @@ ? reverse_condition_maybe_unordered (code) \ : reverse_condition (code)) -/* The arm5 clz instruction returns 32. */ -#define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) ((VALUE) = 32, 1) -#define CTZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) ((VALUE) = 32, 1) +#define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) \ + ((VALUE) = GET_MODE_UNIT_BITSIZE (MODE)) +#define CTZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) \ + ((VALUE) = GET_MODE_UNIT_BITSIZE (MODE)) #define CC_STATUS_INIT \ do { cfun->machine->thumb1_cc_insn = NULL_RTX; } while (0)
Patch that removes extraneous comment attached. The CLZ_DEFINED_VALUE_AT_ZERO macro is hard coded to return 32. For the vector intrinsic vclz this is incorrect and should return the value eight. The CTZ_DEFINED_VALUE_AT_ZERO has the same issue. Tested on arm-linux-gnueabihf, arm-linux-gnueabi. 2014-10-08 Michael Collison <michael.collison@linaro.com> * config/arm/arm.h (CLZ_DEFINED_VALUE_AT_ZERO) : Update to support vector modes (CTZ_DEFINED_VALUE_AT_ZERO): Ditto On 10/09/2014 12:55 AM, Tejas Belagod wrote: > On 09/10/14 08:05, Michael Collison wrote: >> >> The CLZ_DEFINED_VALUE_AT_ZERO macro is harded to return 32. For the >> vector intrinsic vclz this is incorrect and should return the value >> eight. The CTZ_DEFINED_VALUE_AT_ZERO has the same issue. >> >> Tested on arm-linux-gnueabihf, arm-linux-gnueabi. >> >> 2014-10-08 Michael Collison <michael.collison@linaro.com> >> >> * config/arm/arm.h (CLZ_DEFINED_VALUE_AT_ZERO) : Update >> to support vector modes >> (CTZ_DEFINED_VALUE_AT_ZERO): Ditto >> > > Update comment? > > /* The arm5 clz instruction returns 32. */ > > > Thanks, > Tejas. >