http://llvm.org/bugs/show_bug.cgi?id=22271
Bug ID: 22271
Summary: instcombine select optimization speculates trapping
fdiv
Product: libraries
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: normal
Priority: P
Component: Scalar Optimizations
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Created attachment 13712
--> http://llvm.org/bugs/attachment.cgi?id=13712&action=edit
test case
The original source code does something like:
double minval = 1e-3;
double x = bar();
double y = std::max(x, minval);
double z = 4.0 / y;
instcombine does some transform that eliminates the select.
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