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jsonn opened this issue Aug 16, 2012 · 2 comments
Closed

Stack overflow in -basicaa #13993

jsonn opened this issue Aug 16, 2012 · 2 comments
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@jsonn
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jsonn commented Aug 16, 2012

Bugzilla Link 13621
Resolution FIXED
Resolved on Aug 17, 2012 09:16
Version trunk
OS Linux
Attachments Test case
CC @d0k,@DimitryAndric

Extended Description

Run the attached test case with -basicaa -loop-rotate -jump-threading -dse,
it should fall apart easily. Reduce stack size with ulimit -s might help.
@DimitryAndric
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Bisecting shows that r158919 makes this particular testcase start crashing with a stack overflow. The revision just before that is still OK.

@d0k
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d0k commented Aug 17, 2012

Fixed in r162098.

@llvmbot llvmbot transferred this issue from llvm/llvm-bugzilla-archive Dec 3, 2021
djtodoro pushed a commit to djtodoro/llvm-project that referenced this issue Apr 24, 2025
@djolertrk @djtodoro
Add attorv32 cpu
bc8ba1c 
$ cat test.s
// llvm-mc -triple=riscv32 -mattr=+Xsecure test.s -show-inst
// llvm-mc -triple=riscv32 -mattr=+Xsecure test.s -filetype=obj -o test.o
// llvm-objdump -d --mattr=+Xsecure test.o

        .text
        .globl _start
_start:
        # Test the new instructions:
        openstealth.rol   x5, x6, x7
        openstealth.ror   x5, x6, x7
        openstealth.rori  x5, x6, 13

        # Return or jump to an infinite loop to avoid crashing
        ret

$ llvm-mc -triple=riscv32 -mattr=+Xsecure test.s -show-inst

	.text
	.globl	_start
_start:
	openstealth.rol	t0, t1, t2                      # <MCInst llvm#13993 XSECURE_ROL
                                        #  <MCOperand Reg:48>
                                        #  <MCOperand Reg:49>
                                        #  <MCOperand Reg:50>>
	openstealth.ror	t0, t1, t2                      # <MCInst llvm#13994 XSECURE_ROR
                                        #  <MCOperand Reg:48>
                                        #  <MCOperand Reg:49>
                                        #  <MCOperand Reg:50>>
	openstealth.rori	t0, t1, 13                      # <MCInst llvm#13995 XSECURE_RORI
                                        #  <MCOperand Reg:48>
                                        #  <MCOperand Reg:49>
                                        #  <MCOperand Imm:13>>

	ret                                     # <MCInst llvm#12777 JALR
                                        #  <MCOperand Reg:43>
                                        #  <MCOperand Reg:44>
                                        #  <MCOperand Imm:0>>

$ llvm-objdump -d --mattr=+Xsecure test.o

test.o:	file format elf32-littleriscv

Disassembly of section .text:

00000000 <_start>:
       0: 607312b3     	openstealth.rol	t0, t1, t2
       4: 607352b3     	openstealth.ror	t0, t1, t2
       8: 60d35293     	openstealth.rori	t0, t1, 0xd
       c: 00008067     	ret
djtodoro pushed a commit to djtodoro/llvm-project that referenced this issue Apr 24, 2025
@djolertrk @djtodoro
Add attorv32 cpu
7868c94 
$ cat test.s
// llvm-mc -triple=riscv32 -mattr=+Xsecure test.s -show-inst
// llvm-mc -triple=riscv32 -mattr=+Xsecure test.s -filetype=obj -o test.o
// llvm-objdump -d --mattr=+Xsecure test.o

        .text
        .globl _start
_start:
        # Test the new instructions:
        openstealth.rol   x5, x6, x7
        openstealth.ror   x5, x6, x7
        openstealth.rori  x5, x6, 13

        # Return or jump to an infinite loop to avoid crashing
        ret

$ llvm-mc -triple=riscv32 -mattr=+Xsecure test.s -show-inst

	.text
	.globl	_start
_start:
	openstealth.rol	t0, t1, t2                      # <MCInst llvm#13993 XSECURE_ROL
                                        #  <MCOperand Reg:48>
                                        #  <MCOperand Reg:49>
                                        #  <MCOperand Reg:50>>
	openstealth.ror	t0, t1, t2                      # <MCInst llvm#13994 XSECURE_ROR
                                        #  <MCOperand Reg:48>
                                        #  <MCOperand Reg:49>
                                        #  <MCOperand Reg:50>>
	openstealth.rori	t0, t1, 13                      # <MCInst llvm#13995 XSECURE_RORI
                                        #  <MCOperand Reg:48>
                                        #  <MCOperand Reg:49>
                                        #  <MCOperand Imm:13>>

	ret                                     # <MCInst llvm#12777 JALR
                                        #  <MCOperand Reg:43>
                                        #  <MCOperand Reg:44>
                                        #  <MCOperand Imm:0>>

$ llvm-objdump -d --mattr=+Xsecure test.o

test.o:	file format elf32-littleriscv

Disassembly of section .text:

00000000 <_start>:
       0: 607312b3     	openstealth.rol	t0, t1, t2
       4: 607352b3     	openstealth.ror	t0, t1, t2
       8: 60d35293     	openstealth.rori	t0, t1, 0xd
       c: 00008067     	ret

$ clang --target=riscv32 -mcpu=attorv32 test.s -c
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@d0k @jsonn @DimitryAndric