https://bugs.llvm.org/show_bug.cgi?id=35932
Bug ID: 35932
Summary: [X86] Cannot select intrinsic FNMADD
Product: new-bugs
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: new bugs
Assignee: unassignedb...@nondot.org
Reporter: eric.schwe...@pgroup.com
CC: llvm-bugs@lists.llvm.org
Created attachment 19668
--> https://bugs.llvm.org/attachment.cgi?id=19668&action=edit
Intrinsic select problem
This example is reduced from a much larger code and demonstrates the cannot
select issue. The original code has a 655 calls to llvm.x86.fma.vfmadd
intrinsics, and this one triggers the LLVM ERROR.
% llc bug.bc -o bug.o
LLVM ERROR: Cannot select: t34: v2f64 = X86ISD::FNMADDS1 undef:v2f64,
undef:v2f64, t35
t2: v2f64 = undef
t2: v2f64 = undef
t35: v2f64 = scalar_to_vector t38
t38: f64,ch = load<LD8[ConstantPool]> t0, t40, undef:i64
t40: i64 = X86ISD::Wrapper TargetConstantPool:i64<double 1.000000e+00> 0
t39: i64 = TargetConstantPool<double 1.000000e+00> 0
t37: i64 = undef
In function: bughere_
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