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llvm-mirror/test/CodeGen/NVPTX/nvvm-reflect-module-flag.ll
Justin Lebar dc761e7edf [NVPTX] Read __CUDA_FTZ from module flags in NVVMReflect.
Summary:
Previously the NVVMReflect pass would read its configuration from
command-line flags or a static configuration given to the pass at
instantiation time.

This doesn't quite work for clang's use-case.  It needs to pass a value
for __CUDA_FTZ down on a per-module basis.  We use a module flag for
this, so the NVVMReflect pass needs to be updated to read said flag.

Reviewers: tra, rnk

Subscribers: cfe-commits, jholewinski

Differential Revision: http://reviews.llvm.org/D18672

llvm-svn: 265090
2016-04-01 01:09:07 +00:00

14 lines
450 B
LLVM

; RUN: opt < %s -S -nvvm-reflect | FileCheck %s
declare i32 @__nvvm_reflect(i8*)
@str = private unnamed_addr addrspace(1) constant [11 x i8] c"__CUDA_FTZ\00"
define i32 @foo() {
%call = call i32 @__nvvm_reflect(i8* addrspacecast (i8 addrspace(1)* getelementptr inbounds ([11 x i8], [11 x i8] addrspace(1)* @str, i32 0, i32 0) to i8*))
; CHECK: ret i32 42
ret i32 %call
}
!llvm.module.flags = !{!0}
!0 = !{i32 4, !"nvvm-reflect-ftz", i32 42}