Hi Christoph: Ooops, I thought Philipp will push those patches, does here any other patches got approved but not committed? I can help to push those patches tomorrow.
On Tue, Jul 11, 2023 at 11:42 PM Christoph Müllner <christoph.muell...@vrull.eu> wrote: > > Hi Cooper, > > I addressed this in April this year. > It even got an "ok", but nobody pushed it: > https://gcc.gnu.org/pipermail/gcc-patches/2023-April/616972.html > > BR > Christoph > > On Tue, Jul 11, 2023 at 5:39 PM Xianmiao Qu <cooper...@linux.alibaba.com> > wrote: > > > > The frame related load/store instructions should not been > > scheduled bewteen echo other, and the REG_FRAME_RELATED_EXPR > > expression note should should be added to those instructions > > to prevent this. > > This bug cause ICE during GCC bootstap, and it will also ICE > > in the simplified case mempair-4.c, compilation fails with: > > during RTL pass: dwarf2 > > theadmempair-4.c:20:1: internal compiler error: in > > dwarf2out_frame_debug_cfa_offset, at dwarf2cfi.cc:1376 > > 0xa8c017 dwarf2out_frame_debug_cfa_offset > > ../../../gcc/gcc/dwarf2cfi.cc:1376 > > 0xa8c017 dwarf2out_frame_debug > > ../../../gcc/gcc/dwarf2cfi.cc:2285 > > 0xa8c017 scan_insn_after > > ../../../gcc/gcc/dwarf2cfi.cc:2726 > > 0xa8cc97 scan_trace > > ../../../gcc/gcc/dwarf2cfi.cc:2893 > > 0xa8d84d create_cfi_notes > > ../../../gcc/gcc/dwarf2cfi.cc:2933 > > 0xa8d84d execute_dwarf2_frame > > ../../../gcc/gcc/dwarf2cfi.cc:3309 > > 0xa8d84d execute > > ../../../gcc/gcc/dwarf2cfi.cc:3799 > > > > gcc/ChangeLog: > > > > * config/riscv/thead.cc (th_mempair_save_regs): Add > > REG_FRAME_RELATED_EXPR note for mempair instuctions. > > > > gcc/testsuite/ChangeLog: > > * gcc.target/riscv/xtheadmempair-4.c: New test. > > --- > > gcc/config/riscv/thead.cc | 6 +++-- > > .../gcc.target/riscv/xtheadmempair-4.c | 26 +++++++++++++++++++ > > 2 files changed, 30 insertions(+), 2 deletions(-) > > create mode 100644 gcc/testsuite/gcc.target/riscv/xtheadmempair-4.c > > > > diff --git a/gcc/config/riscv/thead.cc b/gcc/config/riscv/thead.cc > > index 75203805310..2df709226f9 100644 > > --- a/gcc/config/riscv/thead.cc > > +++ b/gcc/config/riscv/thead.cc > > @@ -366,10 +366,12 @@ th_mempair_save_regs (rtx operands[4]) > > { > > rtx set1 = gen_rtx_SET (operands[0], operands[1]); > > rtx set2 = gen_rtx_SET (operands[2], operands[3]); > > + rtx dwarf = gen_rtx_SEQUENCE (VOIDmode, rtvec_alloc (2)); > > rtx insn = emit_insn (gen_rtx_PARALLEL (VOIDmode, gen_rtvec (2, set1, > > set2))); > > RTX_FRAME_RELATED_P (insn) = 1; > > - add_reg_note (insn, REG_CFA_OFFSET, copy_rtx (set1)); > > - add_reg_note (insn, REG_CFA_OFFSET, copy_rtx (set2)); > > + XVECEXP (dwarf, 0, 0) = copy_rtx (set1); > > + XVECEXP (dwarf, 0, 1) = copy_rtx (set2); > > + add_reg_note (insn, REG_FRAME_RELATED_EXPR, dwarf); > > } > > > > /* Similar like riscv_restore_reg, but restores two registers from memory > > diff --git a/gcc/testsuite/gcc.target/riscv/xtheadmempair-4.c > > b/gcc/testsuite/gcc.target/riscv/xtheadmempair-4.c > > new file mode 100644 > > index 00000000000..d653f056ef4 > > --- /dev/null > > +++ b/gcc/testsuite/gcc.target/riscv/xtheadmempair-4.c > > @@ -0,0 +1,26 @@ > > +/* { dg-do compile } */ > > +/* { dg-skip-if "" { *-*-* } { "-O0" "-O1" "-g" "-Oz" "-Os" "-flto" } } */ > > +/* { dg-options "-march=rv64gc_xtheadmempair -O2 -g -mtune=thead-c906" { > > target { rv64 } } } */ > > +/* { dg-options "-march=rv32gc_xtheadmempair -O2 -g -mtune=thead-c906" { > > target { rv32 } } } */ > > + > > +void a(); > > +void b(char *); > > +void m_fn1(int); > > +int e; > > + > > +int foo(int ee, int f, int g) { > > + char *h = (char *)__builtin_alloca(1); > > + b(h); > > + b(""); > > + int i = ee; > > + e = g; > > + m_fn1(f); > > + a(); > > + e = i; > > +} > > + > > +/* { dg-final { scan-assembler-times "th.ldd\t" 3 { target { rv64 } } } } > > */ > > +/* { dg-final { scan-assembler-times "th.sdd\t" 3 { target { rv64 } } } } > > */ > > + > > +/* { dg-final { scan-assembler-times "th.lwd\t" 3 { target { rv32 } } } } > > */ > > +/* { dg-final { scan-assembler-times "th.swd\t" 3 { target { rv32 } } } } > > */ > > -- > > 2.17.1 > >
