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From: "patrick at rivosinc dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug target/114200] New: [14] RISC-V fixed-length vector miscompile at -O3 Date: Sat, 02 Mar 2024 01:15:18 +0000 [thread overview] Message-ID: <bug-114200-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114200 Bug ID: 114200 Summary: [14] RISC-V fixed-length vector miscompile at -O3 Product: gcc Version: 14.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: patrick at rivosinc dot com Target Milestone: --- Testcase: int printf(const char *, ...); short a, e = 1; _Bool b, d; short c[300]; int main() { for (int f = 0; f < 19; f++) { for (int g = 0; g < 14; g++) for (int h = 0; h < 10; h++) a += c[g] + e; b += d; } printf("%d\n", a); } Commands: > /scratch/tc-testing/tc-feb-20/build-rv64gcv/bin/riscv64-unknown-linux-gnu-gcc -march=rv64gcv -O3 --param=riscv-autovec-preference=fixed-vlmax red.c -o red.out > /scratch/tc-testing/tc-feb-20-llvm/build/bin/qemu-riscv64 red.out 2318 > /scratch/tc-testing/tc-feb-20/build-rv64gcv/bin/riscv64-unknown-linux-gnu-gcc -march=rv64gcv -O2 --param=riscv-autovec-preference=fixed-vlmax red.c -o red.out > /scratch/tc-testing/tc-feb-20-llvm/build/bin/qemu-riscv64 red.out 2660 Tested/found using r14-9084-g61ab046a327 (not bisected) Found using fuzzer
next reply other threads:[~2024-03-02 1:15 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-03-02 1:15 patrick at rivosinc dot com [this message] 2024-03-06 12:55 ` [Bug target/114200] " rdapp at gcc dot gnu.org 2024-03-06 19:42 ` cvs-commit at gcc dot gnu.org 2024-03-06 19:43 ` rdapp at gcc dot gnu.org 2024-03-07 0:31 ` patrick at rivosinc dot com 2024-03-07 5:39 ` pinskia at gcc dot gnu.org
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