http://llvm.org/bugs/show_bug.cgi?id=16278
Bug ID: 16278
Summary: Can't generate constant memory by NVPTX
Product: new-bugs
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: new bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Created attachment 10656
--> http://llvm.org/bugs/attachment.cgi?id=10656&action=edit
the llvm-ir sample
As the thread in http://ppt.cc/WT8z. llvm-ir sample is in the attachment.
I have a kernel that contains a constant variable declared in file scope like
this:
constant one_f = 1.0f;
__kernel void test( ...){ ... }
Then it is compiled to llvm-ir:
@one_f = addrspace(4) global float 1.000000e+00, align 4
define void test(...){ ... }
Finally ptx:
.visible .global .align 4 .f32 one_f = 0f3F800000;
.entry test( ...) { ... }
one_f is placed in global memory and load it by ld.global.f32
Antony Yu
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