maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
llvm-project/llvm/test/CodeGen/AMDGPU/inline-attr.ll

Ignoring revisions in .git-blame-ignore-revs. Click here to bypass and see the normal blame view.

34 lines
1.8 KiB
LLVM
Raw Normal View History

[AMDGPU] Set fast-math flags on functions given the options We have a single library build without relaxation options. When inlined library functions remove fast math attributes from the functions they are integrated into. This patch sets relaxation attributes on the functions after linking provided corresponding relaxation options are given. Math instructions inside the inlined functions remain to have no fast flags, but inlining does not prevent fast math transformations of a surrounding caller code anymore. Differential Revision: https://reviews.llvm.org/D38325 llvm-svn: 314568
2017-09-30 07:40:19 +08:00
; RUN: opt -mtriple=amdgcn--amdhsa -S -O3 -enable-unsafe-fp-math %s | FileCheck -check-prefix=GCN -check-prefix=UNSAFE %s
; RUN: opt -mtriple=amdgcn--amdhsa -S -O3 -enable-no-nans-fp-math %s | FileCheck -check-prefix=GCN -check-prefix=NONANS %s
; RUN: opt -mtriple=amdgcn--amdhsa -S -O3 -enable-no-infs-fp-math %s | FileCheck -check-prefix=GCN -check-prefix=NOINFS %s
; GCN: define float @foo(float %x) local_unnamed_addr #0 {
; GCN: define amdgpu_kernel void @caller(float addrspace(1)* nocapture %p) local_unnamed_addr #1 {
; GCN: %mul.i = fmul float %load, 1.500000e+01
AMDGPU: Stop setting attributes based on TargetOptions Having arbitrary passes looking at the TargetOptions is pretty messy. This was also disregarding if a function already had an explicit attribute setting on it. opt/llc now add the attributes to functions that don't specify the attribute. clang and lld do not call the function to do this, which they maybe should. This was also treating unsafe-fp-math as implying the others, and setting the other attributes based on it. This is not done anywhere else, and I'm not sure is correct based on the current description of the option bit. Effectively reverts 1d8cf2be89087a2babc1dc38b16040fad0a555e2
2019-12-05 17:45:32 +08:00
; UNSAFE: attributes #0 = { norecurse nounwind readnone "unsafe-fp-math"="true" }
; UNSAFE: attributes #1 = { nofree norecurse nounwind "less-precise-fpmad"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="true" }
[AMDGPU] Set fast-math flags on functions given the options We have a single library build without relaxation options. When inlined library functions remove fast math attributes from the functions they are integrated into. This patch sets relaxation attributes on the functions after linking provided corresponding relaxation options are given. Math instructions inside the inlined functions remain to have no fast flags, but inlining does not prevent fast math transformations of a surrounding caller code anymore. Differential Revision: https://reviews.llvm.org/D38325 llvm-svn: 314568
2017-09-30 07:40:19 +08:00
; NOINFS: attributes #0 = { norecurse nounwind readnone "no-infs-fp-math"="true" }
Add, and infer, a nofree function attribute This patch adds a function attribute, nofree, to indicate that a function does not, directly or indirectly, call a memory-deallocation function (e.g., free, C++'s operator delete). Reviewers: jdoerfert Differential Revision: https://reviews.llvm.org/D49165 llvm-svn: 365336
2019-07-08 23:57:56 +08:00
; NOINFS: attributes #1 = { nofree norecurse nounwind "less-precise-fpmad"="false" "no-infs-fp-math"="true" "no-nans-fp-math"="false" "unsafe-fp-math"="false" }
[AMDGPU] Set fast-math flags on functions given the options We have a single library build without relaxation options. When inlined library functions remove fast math attributes from the functions they are integrated into. This patch sets relaxation attributes on the functions after linking provided corresponding relaxation options are given. Math instructions inside the inlined functions remain to have no fast flags, but inlining does not prevent fast math transformations of a surrounding caller code anymore. Differential Revision: https://reviews.llvm.org/D38325 llvm-svn: 314568
2017-09-30 07:40:19 +08:00
; NONANS: attributes #0 = { norecurse nounwind readnone "no-nans-fp-math"="true" }
Add, and infer, a nofree function attribute This patch adds a function attribute, nofree, to indicate that a function does not, directly or indirectly, call a memory-deallocation function (e.g., free, C++'s operator delete). Reviewers: jdoerfert Differential Revision: https://reviews.llvm.org/D49165 llvm-svn: 365336
2019-07-08 23:57:56 +08:00
; NONANS: attributes #1 = { nofree norecurse nounwind "less-precise-fpmad"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="true" "unsafe-fp-math"="false" }
[AMDGPU] Set fast-math flags on functions given the options We have a single library build without relaxation options. When inlined library functions remove fast math attributes from the functions they are integrated into. This patch sets relaxation attributes on the functions after linking provided corresponding relaxation options are given. Math instructions inside the inlined functions remain to have no fast flags, but inlining does not prevent fast math transformations of a surrounding caller code anymore. Differential Revision: https://reviews.llvm.org/D38325 llvm-svn: 314568
2017-09-30 07:40:19 +08:00
define float @foo(float %x) #0 {
entry:
%mul = fmul float %x, 1.500000e+01
ret float %mul
}
define amdgpu_kernel void @caller(float addrspace(1)* %p) #1 {
entry:
%load = load float, float addrspace(1)* %p, align 4
%call = call fast float @foo(float %load) #0
store float %call, float addrspace(1)* %p, align 4
ret void
}
attributes #0 = { nounwind }
attributes #1 = { nounwind "less-precise-fpmad"="true" "no-infs-fp-math"="true" "no-nans-fp-math"="true" "unsafe-fp-math"="true" }