[llvm-bugs] [Bug 26803] New: LLVM ERROR: Cannot select: t30: i32 = AArch64ISD::FCCMP
via llvm-bugs
llvm-bugs at lists.llvm.org
Tue Mar 1 14:13:23 PST 2016
https://llvm.org/bugs/show_bug.cgi?id=26803
Bug ID: 26803
Summary: LLVM ERROR: Cannot select: t30: i32 =
AArch64ISD::FCCMP
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Backend: AArch64
Assignee: unassignedbugs at nondot.org
Reporter: kai at redstar.de
CC: llvm-bugs at lists.llvm.org
Classification: Unclassified
Created attachment 15969
--> https://llvm.org/bugs/attachment.cgi?id=15969&action=edit
IR file demonstrating the bug
The attached bugpoint-reduced test case produces the error message if run with
llc -O3:
LLVM ERROR: Cannot select: t30: i32 = AArch64ISD::FCCMP undef:f128, undef:f128,
Constant:i32<1>, Constant:i32<0>, t29
t9: f128 = undef
t9: f128 = undef
t27: i32 = Constant<1>
t28: i32 = Constant<0>
t29: f128 = AArch64ISD::FCMP undef:f128, t35
t9: f128 = undef
t35: f128,ch = load<LD16[ConstantPool]> t0, t39, undef:i64
t39: i64 = AArch64ISD::ADDlow t38, TargetConstantPool:i64<fp128
0xL00000000000000000000000000000000> 0 [TF=34]
t38: i64 = AArch64ISD::ADRP TargetConstantPool:i64<fp128
0xL00000000000000000000000000000000> 0 [TF=1]
t36: i64 = TargetConstantPool<fp128
0xL00000000000000000000000000000000> 0 [TF=1]
t37: i64 = TargetConstantPool<fp128
0xL00000000000000000000000000000000> 0 [TF=34]
t34: i64 = undef
In function: _D2rt4util8typeinfo15__T8FloatingTcZ6equalsFNaNbNfccZb
This occurs while compiling module rt.util.ti_Acreal with current LDC D
compiler on native AArch64 Linux.
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