Bug#891802: marked as done (llvm-6.0: LLVM ERROR: Cannot select: 0x582f0b00: f32 = X86ISD::FNMSUB 0x582f8740, 0x583805f0, 0x582fde50)

[Debian Bug Tracking System]

Your message dated Sun, 11 Mar 2018 06:52:03 +0100
with message-id <dbad84de-ec64-ca00-9ee5-46e4401d0...@debian.org>
and subject line Re: Bug#891802: llvm-6.0: LLVM ERROR: Cannot select: 
0x582f0b00: f32 = X86ISD::FNMSUB 0x582f8740, 0x583805f0, 0x582fde50
has caused the Debian Bug report #891802,
regarding llvm-6.0: LLVM ERROR: Cannot select: 0x582f0b00: f32 = X86ISD::FNMSUB 
0x582f8740, 0x583805f0, 0x582fde50
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

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-- 
891802: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=891802
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems

--- Begin Message ---

Package: llvm-6.0
Version: 1:6.0~+rc3-1
Severity: important

Hi,

this is a regression from llvm-5.0 to llvm-6.0 on i386.

I'm attaching two .bc files from a pocl selftest, one generated with
llvm-5.0, one with llvm-6.0. 

llc-5.0 successfully compiles both, llc-6.0 fails to compile both:

$ llc-5.0 -O2 -mcpu=i686  pocl.trig.llvm5.bc

$ llc-5.0 -O2 -mcpu=i686  pocl.trig.llvm6.bc


$ llc-6.0 -O2 -mcpu=i686  pocl.trig.llvm5.bc
LLVM ERROR: Cannot select: 0x582f0b00: f32 = X86ISD::FNMSUB 0x582f8740, 
0x583805f0, 0x582fde50
  0x582f8740: f32 = fsub 0x58314d20, 0x58329d00
    0x58314d20: f32,ch = load<LD4[FixedStack0(align=16)+12](align=4)> 
0x583150e0, 0x58322db0, undef:i32
      0x58322db0: i32 = or FrameIndex:i32<0>, Constant:i32<12>
        0x5837f620: i32 = FrameIndex<0>
        0x582c0e40: i32 = Constant<12>
      0x58326f60: i32 = undef
    0x58329d00: f32,ch = load<LD4[FixedStack1]> 0x58329c80, FrameIndex:i32<1>, 
undef:i32
      0x582f8180: i32 = FrameIndex<1>
      0x58326f60: i32 = undef
  0x583805f0: f32,ch = load<LD4[ConstantPool]> 0x58223a80, 0x58318150, undef:i32
    0x58318150: i32 = X86ISD::Wrapper TargetConstantPool:i32<float 
0x3C23100000000000> 0
      0x582bbbe0: i32 = TargetConstantPool<float 0x3C23100000000000> 0
    0x58326f60: i32 = undef
  0x582fde50: f32,ch,glue = CopyFromReg 0x5831d6a0, Register:f32 %fp0, 
0x5831d6a0:1
    0x58309fe0: f32 = Register %fp0
    0x5831d6a0: ch,glue = callseq_end 0x58320a90, TargetConstant:i32<12>, 
TargetConstant:i32<0>, 0x58320a90:1
      0x58315ef0: i32 = TargetConstant<12>
      0x5837f5e0: i32 = TargetConstant<0>
      0x58320a90: ch,glue = X86ISD::CALL 0x583189d0, 
TargetExternalSymbol:i32'fmaf', RegisterMask:Untyped
        0x582eff80: i32 = TargetExternalSymbol'fmaf'
        0x58327420: Untyped = RegisterMask
In function: _Z20__pocl_argReductionSPDv4_fS0_S_

$ llc-6.0 -O2 -mcpu=i686  pocl.trig.llvm6.bc
LLVM ERROR: Cannot select: 0x575fb6e0: f32 = X86ISD::FNMSUB 0x575c98d0, 
0x575aad80, 0x575c82f0
  0x575c98d0: f32 = fsub 0x575aa740, 0x575754a0
    0x575aa740: f32,ch = load<LD4[FixedStack0(align=16)+12](align=4)> 
0x575a8b60, 0x5753a900, undef:i32
      0x5753a900: i32 = or FrameIndex:i32<0>, Constant:i32<12>
        0x575a89e0: i32 = FrameIndex<0>
        0x575b58b0: i32 = Constant<12>
      0x575aa280: i32 = undef
    0x575754a0: f32,ch = load<LD4[FixedStack1]> 0x575a8620, FrameIndex:i32<1>, 
undef:i32
      0x575b2d00: i32 = FrameIndex<1>
      0x575aa280: i32 = undef
  0x575aad80: f32,ch = load<LD4[ConstantPool]> 0x574a1260, 0x57588590, undef:i32
    0x57588590: i32 = X86ISD::Wrapper TargetConstantPool:i32<float 
0x3C23100000000000> 0
      0x575ca110: i32 = TargetConstantPool<float 0x3C23100000000000> 0
    0x575aa280: i32 = undef
  0x575c82f0: f32,ch,glue = CopyFromReg 0x575aa100, Register:f32 %fp0, 
0x575aa100:1
    0x575a3c20: f32 = Register %fp0
    0x575aa100: ch,glue = callseq_end 0x57580000, TargetConstant:i32<12>, 
TargetConstant:i32<0>, 0x57580000:1
      0x5758fdd0: i32 = TargetConstant<12>
      0x575a17f0: i32 = TargetConstant<0>
      0x57580000: ch,glue = X86ISD::CALL 0x575b2030, 
TargetExternalSymbol:i32'fmaf', RegisterMask:Untyped
        0x575a8460: i32 = TargetExternalSymbol'fmaf'
        0x575c7cf0: Untyped = RegisterMask
In function: _Z20__pocl_argReductionSPU9CLprivateDv4_fS1_S_


Andreas

pocl.trig.llvm5.bc.gz
Description: application/gzip

pocl.trig.llvm6.bc.gz
Description: application/gzip

--- End Message ---

--- Begin Message ---

Version: 1:6.0-1

On 2018-03-01 00:25, Sylvestre Ledru wrote:
> Reported upstream

Was quickly fixed upstream before the release.


Andreas

--- End Message ---