Re: [PATCH] Optimize store_expr from STRING_CST [PR95052]

2020-05-15 Thread Jeff Law via Gcc-patches
On Thu, 2020-05-14 at 18:51 +0200, Jakub Jelinek wrote: > On Thu, May 14, 2020 at 10:10:55AM -0600, Jeff Law wrote: > > On Tue, 2020-05-12 at 10:12 +0200, Jakub Jelinek wrote: > > > Hi! > > > > > > In the following testcase, store_expr of e.g. 97 bytes long string literal > > > into 1MB long array

Re: [PATCH] Optimize store_expr from STRING_CST [PR95052]

2020-05-14 Thread Jakub Jelinek via Gcc-patches
On Thu, May 14, 2020 at 10:10:55AM -0600, Jeff Law wrote: > On Tue, 2020-05-12 at 10:12 +0200, Jakub Jelinek wrote: > > Hi! > > > > In the following testcase, store_expr of e.g. 97 bytes long string literal > > into 1MB long array is implemented by copying the 97 bytes from .rodata > > section, fo

Re: [PATCH] Optimize store_expr from STRING_CST [PR95052]

2020-05-14 Thread Jeff Law via Gcc-patches
On Tue, 2020-05-12 at 10:12 +0200, Jakub Jelinek wrote: > Hi! > > In the following testcase, store_expr of e.g. 97 bytes long string literal > into 1MB long array is implemented by copying the 97 bytes from .rodata > section, followed by clearing the remaining bytes. But, as the STRING_CST > has