https://bugs.freedesktop.org/show_bug.cgi?id=104902
Bug ID: 104902
Summary: unpackHalf2x16 causes LLVM Error on GCN 1.2+ cards
(and possibly others)
Product: Mesa
Version: unspecified
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Drivers/Gallium/radeonsi
Assignee: dri-devel@lists.freedesktop.org
Reporter: johnnyonfl...@hotmail.com
QA Contact: dri-devel@lists.freedesktop.org
Included in this bug report is code to reproduce the crash without the actual
application and the necessary data.
https://gist.github.com/JohnnyonFlame/d5e0daf640b3ebd3c02f6e0327d53b55
Crash log:
LLVM ERROR: Cannot select: 0x7f12680b09d8: f16 = bitcast 0x7f12680a83b8
0x7f12680a83b8: i32 = srl 0x7f12680a82e8, Constant:i32<16>
0x7f12680a82e8: i32 = bswap 0x7f12680b08a0
0x7f12680b08a0: i32 = and 0x7f12680b01b8, Constant:i32<65535>
0x7f12680b01b8: i32 = extract_vector_elt 0x7f12680b0150,
Constant:i32<0>
0x7f12680b0150: v4i32 = bitcast 0x7f12680b00e8
0x7f12680b00e8: v4f32,ch =
llvm.amdgcn.image.sample<LD16[TargetCustom7(addrspace=2)](dereferenceable)>
0x7f1268033948, TargetConstant:i32<459>, 0x7f12680b0e50, 0x7f12680ab0e8,
0x7f12680ab220, Constant:i32<15>, Constant:i1<0>, Constant:i1<0>,
Constant:i1<0>, Constant:i1<0>, Constant:i1<0>
0x7f12680affb0: i32 = TargetConstant<459>
0x7f12680b0e50: v2f32 = BUILD_VECTOR 0x7f12680a87c8,
0x7f12680aaee0
0x7f12680a87c8: f32 = INTERP_P2 0x7f12680a8898, 0x7f12680ab288,
Constant:i32<0>, Constant:i32<0>, 0x7f12680aae10:1
0x7f12680a8898: f32 = INTERP_P1 0x7f12680ab018,
Constant:i32<0>, Constant:i32<0>, 0x7f12680aada8:1
0x7f12680ab288: f32 = bitcast 0x7f12680a8b08
0x7f12680aaa68: i32 = Constant<0>
0x7f12680aaa68: i32 = Constant<0>
0x7f12680aae10: ch,glue = SI_INIT_M0 0x7f12680a86f8,
0x7f1268033948
0x7f12680aaee0: f32 = fsub nsz ConstantFP:f32<1.000000e+00>,
0x7f12680a8760
0x7f12680aae78: f32 = ConstantFP<1.000000e+00>
0x7f12680a8760: f32 = INTERP_P2 0x7f12680a8830,
0x7f12680ab288, Constant:i32<1>, Constant:i32<0>, 0x7f12680b0908:1
0x7f12680ab0e8: v8i32,ch =
load<LD32[%30(addrspace=2)](dereferenceable)(invariant)> 0x7f1268033948,
0x7f12680aafb0, undef:i64
0x7f12680aafb0: i64 = add 0x7f12680a8558, Constant:i64<512>
0x7f12680a8558: i64,ch = CopyFromReg 0x7f1268033948,
Register:i64 %3
0x7f12680aaf48: i64 = Constant<512>
0x7f12680ab080: i64 = undef
0x7f12680ab220: v4i32,ch =
load<LD16[%33(addrspace=2)](dereferenceable)(invariant)> 0x7f1268033948,
0x7f12680ab1b8, undef:i64
0x7f12680ab1b8: i64 = add 0x7f12680a8558, Constant:i64<560>
0x7f12680a8558: i64,ch = CopyFromReg 0x7f1268033948,
Register:i64 %3
0x7f12680ab150: i64 = Constant<560>
0x7f12680ab080: i64 = undef
0x7f12680b0018: i32 = Constant<15>
0x7f12680b0080: i1 = Constant<0>
0x7f12680b0080: i1 = Constant<0>
0x7f12680b0080: i1 = Constant<0>
0x7f12680b0080: i1 = Constant<0>
0x7f12680b0080: i1 = Constant<0>
0x7f12680aaa68: i32 = Constant<0>
0x7f12680aac08: i32 = Constant<65535>
0x7f12680a8350: i32 = Constant<16>
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