[Bug tree-optimization/118344] [15 regression] Crash at -O3 in ifcombine

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118344 Alexandre Oliva changed: What|Removed |Added URL||https://gcc.gnu.org/piperma

[Bug tree-optimization/118206] [15 regression] libdeflate miscompiled by ifcombine since r15-6360-g6d5df5133c5dd8

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118206 Alexandre Oliva changed: What|Removed |Added URL||https://gcc.gnu.org/piperma

[Bug tree-optimization/118572] [15 regression] wrong code for expression ((0x80 & c) != 0) && ((0xc0 & c) == 0x80)) since r15-6893

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118572 Alexandre Oliva changed: What|Removed |Added Assignee|unassigned at gcc dot gnu.org |aoliva at gcc dot gnu.org

[Bug tree-optimization/118572] [15 regression] wrong code for expression ((0x80 & c) != 0) && ((0xc0 & c) == 0x80)) since r15-6893

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118572 Alexandre Oliva changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution|---

[Bug tree-optimization/118514] [15 regression] wrong code at -O{1,s,3} on x86_64-linux-gnu since r15-6360-g6d5df5133c5dd8

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118514 Alexandre Oliva changed: What|Removed |Added Resolution|--- |FIXED Status|ASSIGNED

[Bug tree-optimization/118456] [15 Regression] wrong code due to ifcombine since r15-6773

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118456 Alexandre Oliva changed: What|Removed |Added Attachment #60141|0 |1 is obsolete|

[Bug tree-optimization/118409] [15 regression] gas miscompiled by ifcombine ("Unsupported broadcast" assemble failure) since r15-6774-g740c84975ceb74

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118409 --- Comment #25 from Alexandre Oliva --- Created attachment 60132 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=60132&action=edit candidate patch Here's what I'm testing.

[Bug tree-optimization/118409] [15 regression] gas miscompiled by ifcombine ("Unsupported broadcast" assemble failure) since r15-6774-g740c84975ceb74

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118409 Alexandre Oliva changed: What|Removed |Added Assignee|unassigned at gcc dot gnu.org |aoliva at gcc dot gnu.org

[Bug tree-optimization/118456] [15 Regression] wrong code due to ifcombine since r15-6773

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118456 --- Comment #5 from Alexandre Oliva --- Created attachment 60141 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=60141&action=edit candidate patch under testing This may be too blunt, and the unrelated robustification may be unwelcome at t

[Bug tree-optimization/118267] Suboptimal code for bool bitfield tests

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118267 --- Comment #3 from Alexandre Oliva --- The blocks are ineligible for ifcombine because the dereferences could trap. Some flow-dependent information could enable us to conclude that only the first dereference could trap, and it would remain in

[Bug tree-optimization/118456] [15 Regression] wrong code due to ifcombine since r15-6773

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118456 Alexandre Oliva changed: What|Removed |Added Assignee|unassigned at gcc dot gnu.org |aoliva at gcc dot gnu.org

[Bug tree-optimization/88443] [meta-bug] bogus/missing -Wstringop-overflow warnings

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88443 Bug 88443 depends on bug 113026, which changed state. Bug 113026 Summary: Bogus -Wstringop-overflow warning on simple memcpy type loop https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113026 What|Removed |Added

[Bug tree-optimization/118504] New: Bogus -Wstringop-overflow warning on simple memcpy type loop

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118504 Bug ID: 118504 Summary: Bogus -Wstringop-overflow warning on simple memcpy type loop Product: gcc Version: 14.0 Status: UNCONFIRMED Severity: normal

[Bug tree-optimization/113026] Bogus -Wstringop-overflow warning on simple memcpy type loop

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113026 Alexandre Oliva changed: What|Removed |Added Status|RESOLVED|REOPENED Resolution|FIXED

[Bug tree-optimization/118186] [15 regression] FAIL: gcc.dg/field-merge-16.c scan-tree-dump-times ifcombine "optimizing" 6

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118186 --- Comment #2 from Alexandre Oliva --- I've just confirmed that that's the fix indeed.

[Bug tree-optimization/118206] [15 regression] libdeflate miscompiled by ifcombine since r15-6360-g6d5df5133c5dd8

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118206 Alexandre Oliva changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution|---

[Bug testsuite/118025] [15 Regression] gcc.dg/field-merge-9.c FAILs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118025 Alexandre Oliva changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution|---

[Bug middle-end/113506] ICE: RTL check: expected elt 2 type 'B', have '0' (rtx barrier) in BLOCK_FOR_INSN, at rtl.h:1495 with -Os -fno-tree-coalesce-vars -finline-stringops

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113506 Alexandre Oliva changed: What|Removed |Added Resolution|--- |FIXED Status|ASSIGNED

[Bug tree-optimization/118186] [15 regression] FAIL: gcc.dg/field-merge-16.c scan-tree-dump-times ifcombine "optimizing" 6

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118186 Alexandre Oliva changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution|---

[Bug tree-optimization/118344] [15 regression] Crash at -O3 in ifcombine

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118344 Alexandre Oliva changed: What|Removed |Added Resolution|--- |FIXED Status|ASSIGNED

[Bug tree-optimization/118514] [15 regression] wrong code at -O{1,s,3} on x86_64-linux-gnu since r15-6360-g6d5df5133c5dd8

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118514 Alexandre Oliva changed: What|Removed |Added Assignee|unassigned at gcc dot gnu.org |aoliva at gcc dot gnu.org

[Bug tree-optimization/118514] [15 regression] wrong code at -O{1,s,3} on x86_64-linux-gnu since r15-6360-g6d5df5133c5dd8

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118514 --- Comment #5 from Alexandre Oliva --- Interesting. Without ifcombine, we optimize the loop body to the same, but the load from b doesn't get pulled out to the loop header. I suppose ifcombine may need to propagate some annotation that the lo

[Bug tree-optimization/118456] [15 Regression] wrong code due to ifcombine since r15-6773

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118456 Alexandre Oliva changed: What|Removed |Added Resolution|--- |FIXED Status|ASSIGNED

[Bug tree-optimization/118805] [15 Regression] wrong code at -O1 with "-fno-tree-ccp -fno-tree-copy-prop -fno-tree-forwprop -fno-tree-fre" on x86_64-linux-gnu since r15-6173

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118805 Alexandre Oliva changed: What|Removed |Added Status|NEW |ASSIGNED --- Comment #5 from Alexandr

[Bug target/119629] mismatch between [power9-64] builtins and their instructions

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119629 --- Comment #14 from Alexandre Oliva --- ack, patch combining the patchlets in commits 7 and 9 looking good in gcc-14 ppc-elf test results. I'll point out that this report was not so much about this specific mismatch between ppc builtins and th

[Bug tree-optimization/113524] FAIL: gcc.dg/torture/pr113026-1.c -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions (test for bogus messages, line 10)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113524 --- Comment #7 from Alexandre Oliva --- ... and riscv*-elf, powerpc-elf.

[Bug target/119629] mismatch between [power9-64] builtins and their instructions

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119629 --- Comment #10 from Alexandre Oliva --- >> - instructions and expanders for these builtins don't have their conditions >> tested, so they must necessarily follow from the builtin conditions, and >> this case clearly isn't > "They don't have th

[Bug target/119629] mismatch between [power9-64] builtins and their instructions

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119629 --- Comment #11 from Alexandre Oliva --- >> On a powerpc-elf standard build, TARGET_POWERPC64 is enabled, but >> TARGET_64BIT isn't, and so gcc.target/powerpc/byte-in-set-2.c fails >> to compile with an ICE (instruction not recognized) instead o

[Bug target/119629] mismatch between [power9-64] builtins and their instructions

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119629 --- Comment #12 from Alexandre Oliva --- Peter, Segher, thanks for the patches and the feedback. I'll give them a try and report back.

[Bug target/118182] RISC-V: Miscompile for 410.bwaves, 416.gamess and 465.tonto from spec2006

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118182 Alexandre Oliva changed: What|Removed |Added CC||aoliva at gcc dot gnu.org --- Comment

[Bug target/118182] RISC-V: Miscompile for 410.bwaves, 416.gamess and 465.tonto from spec2006

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118182 --- Comment #7 from Alexandre Oliva --- bisection with this PR's patch led me to the patch that added the late-combine pass as the one that enables the intended result. That's all I know so far.

[Bug target/118182] RISC-V: Miscompile for 410.bwaves, 416.gamess and 465.tonto from spec2006

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118182 --- Comment #8 from Alexandre Oliva --- The problem is that the @pred_broadcast pattern expands to _zvfh insns even when _zero or _imm would do. The scalar constant gets allocated to a register, and vec_duplicated in the pred_broadcast insn, on

[Bug target/118182] RISC-V: Miscompile for 410.bwaves, 416.gamess and 465.tonto from spec2006

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118182 --- Comment #9 from Alexandre Oliva --- https://gcc.gnu.org/pipermail/gcc-patches/2025-April/680824.html

[Bug tree-optimization/118805] [15 Regression] wrong code at -O1 with "-fno-tree-ccp -fno-tree-copy-prop -fno-tree-forwprop -fno-tree-fre" on x86_64-linux-gnu since r15-6173

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118805 Alexandre Oliva changed: What|Removed |Added Resolution|--- |FIXED Status|ASSIGNED

[Bug target/119629] New: mismatch between [power9-64] builtins and their instructions

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119629 Bug ID: 119629 Summary: mismatch between [power9-64] builtins and their instructions Product: gcc Version: 14.2.1 Status: UNCONFIRMED Severity: normal

[Bug target/119609] New: [powerpc-elf] load_toc_v4_pic_si may clobber r12 and crt

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119609 Bug ID: 119609 Summary: [powerpc-elf] load_toc_v4_pic_si may clobber r12 and crt Product: gcc Version: 14.2.1 Status: UNCONFIRMED Severity: normal Pr

[Bug target/120424] New: [arm] -fnon-call-exceptions -fstack-clash-protection triggers lra-eliminations bug

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120424 Bug ID: 120424 Summary: [arm] -fnon-call-exceptions -fstack-clash-protection triggers lra-eliminations bug Product: gcc Version: 14.2.1 Status: UNCONFIRMED Sev

[Bug target/120424] [arm] -fnon-call-exceptions -fstack-clash-protection triggers lra-eliminations bug

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120424 --- Comment #2 from Alexandre Oliva --- Created attachment 61516 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=61516&action=edit candidate patch This patch likely fixes bug 118929 as well.

[Bug middle-end/118939] [14/15/16 Regression] ada: executable segfaults on arm-linux-gnueabi when assigning an access to controlled type since r14-2653-g2971ff7b1d564a

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118939 Alexandre Oliva changed: What|Removed |Added CC||aoliva at gcc dot gnu.org --- Comment

[Bug target/120424] [arm] -fnon-call-exceptions -fstack-clash-protection triggers lra-eliminations bug

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120424 --- Comment #3 from Alexandre Oliva --- err, make that PR118939

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