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llvm-project/llvm/test/Transforms/CodeGenPrepare/invariant.group.ll

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Introducing llvm.invariant.group.barrier intrinsic For more info for what reason it was invented, goto: http://lists.llvm.org/pipermail/cfe-dev/2015-July/044227.html invariant.group.barrier: http://reviews.llvm.org/D12310 docs: http://reviews.llvm.org/D11399 CodeGenPrepare: http://reviews.llvm.org/D12875 llvm-svn: 247711
2015-09-16 02:32:14 +08:00
; RUN: opt -codegenprepare -S < %s | FileCheck %s
@tmp = global i8 0
; CHECK-LABEL: define void @foo() {
define void @foo() {
enter:
; CHECK-NOT: !invariant.group
Rename invariant.group.barrier to launder.invariant.group Summary: This is one of the initial commit of "RFC: Devirtualization v2" proposal: https://docs.google.com/document/d/16GVtCpzK8sIHNc2qZz6RN8amICNBtvjWUod2SujZVEo/edit?usp=sharing Reviewers: rsmith, amharc, kuhar, sanjoy Subscribers: arsenm, nhaehnle, javed.absar, hiraditya, llvm-commits Differential Revision: https://reviews.llvm.org/D45111 llvm-svn: 331448
2018-05-03 19:03:01 +08:00
; CHECK-NOT: @llvm.launder.invariant.group.p0i8(
Implement strip.invariant.group Summary: This patch introduce new intrinsic - strip.invariant.group that was described in the RFC: Devirtualization v2 Reviewers: rsmith, hfinkel, nlopes, sanjoy, amharc, kuhar Subscribers: arsenm, nhaehnle, JDevlieghere, hiraditya, xbolva00, llvm-commits Differential Revision: https://reviews.llvm.org/D47103 Co-authored-by: Krzysztof Pszeniczny <krzysztof.pszeniczny@gmail.com> llvm-svn: 336073
2018-07-02 12:49:30 +08:00
; CHECK: %val = load i8, i8* @tmp{{$}}
%val = load i8, i8* @tmp, !invariant.group !0
Rename invariant.group.barrier to launder.invariant.group Summary: This is one of the initial commit of "RFC: Devirtualization v2" proposal: https://docs.google.com/document/d/16GVtCpzK8sIHNc2qZz6RN8amICNBtvjWUod2SujZVEo/edit?usp=sharing Reviewers: rsmith, amharc, kuhar, sanjoy Subscribers: arsenm, nhaehnle, javed.absar, hiraditya, llvm-commits Differential Revision: https://reviews.llvm.org/D45111 llvm-svn: 331448
2018-05-03 19:03:01 +08:00
%ptr = call i8* @llvm.launder.invariant.group.p0i8(i8* @tmp)
Introducing llvm.invariant.group.barrier intrinsic For more info for what reason it was invented, goto: http://lists.llvm.org/pipermail/cfe-dev/2015-July/044227.html invariant.group.barrier: http://reviews.llvm.org/D12310 docs: http://reviews.llvm.org/D11399 CodeGenPrepare: http://reviews.llvm.org/D12875 llvm-svn: 247711
2015-09-16 02:32:14 +08:00
Dissallow non-empty metadata for invariant.group Summary: This feature is not needed, but it might be usefull in the future to use metadata to mark what which function should support it (and strip it when not). Reviewers: rsmith, sanjoy, amharc, kuhar Subscribers: hiraditya, llvm-commits Differential Revision: https://reviews.llvm.org/D45419 llvm-svn: 332787
2018-05-19 07:53:46 +08:00
; CHECK: store i8 42, i8* @tmp{{$}}
Introducing llvm.invariant.group.barrier intrinsic For more info for what reason it was invented, goto: http://lists.llvm.org/pipermail/cfe-dev/2015-July/044227.html invariant.group.barrier: http://reviews.llvm.org/D12310 docs: http://reviews.llvm.org/D11399 CodeGenPrepare: http://reviews.llvm.org/D12875 llvm-svn: 247711
2015-09-16 02:32:14 +08:00
store i8 42, i8* %ptr, !invariant.group !0
ret void
}
; CHECK-LABEL: }
Implement strip.invariant.group Summary: This patch introduce new intrinsic - strip.invariant.group that was described in the RFC: Devirtualization v2 Reviewers: rsmith, hfinkel, nlopes, sanjoy, amharc, kuhar Subscribers: arsenm, nhaehnle, JDevlieghere, hiraditya, xbolva00, llvm-commits Differential Revision: https://reviews.llvm.org/D47103 Co-authored-by: Krzysztof Pszeniczny <krzysztof.pszeniczny@gmail.com> llvm-svn: 336073
2018-07-02 12:49:30 +08:00
; CHECK-LABEL: define void @foo2() {
define void @foo2() {
enter:
; CHECK-NOT: !invariant.group
; CHECK-NOT: @llvm.strip.invariant.group.p0i8(
; CHECK: %val = load i8, i8* @tmp{{$}}
%val = load i8, i8* @tmp, !invariant.group !0
%ptr = call i8* @llvm.strip.invariant.group.p0i8(i8* @tmp)
; CHECK: store i8 42, i8* @tmp{{$}}
store i8 42, i8* %ptr, !invariant.group !0
Introducing llvm.invariant.group.barrier intrinsic For more info for what reason it was invented, goto: http://lists.llvm.org/pipermail/cfe-dev/2015-July/044227.html invariant.group.barrier: http://reviews.llvm.org/D12310 docs: http://reviews.llvm.org/D11399 CodeGenPrepare: http://reviews.llvm.org/D12875 llvm-svn: 247711
2015-09-16 02:32:14 +08:00
Implement strip.invariant.group Summary: This patch introduce new intrinsic - strip.invariant.group that was described in the RFC: Devirtualization v2 Reviewers: rsmith, hfinkel, nlopes, sanjoy, amharc, kuhar Subscribers: arsenm, nhaehnle, JDevlieghere, hiraditya, xbolva00, llvm-commits Differential Revision: https://reviews.llvm.org/D47103 Co-authored-by: Krzysztof Pszeniczny <krzysztof.pszeniczny@gmail.com> llvm-svn: 336073
2018-07-02 12:49:30 +08:00
ret void
}
; CHECK-LABEL: }
declare i8* @llvm.launder.invariant.group.p0i8(i8*)
declare i8* @llvm.strip.invariant.group.p0i8(i8*)
Dissallow non-empty metadata for invariant.group Summary: This feature is not needed, but it might be usefull in the future to use metadata to mark what which function should support it (and strip it when not). Reviewers: rsmith, sanjoy, amharc, kuhar Subscribers: hiraditya, llvm-commits Differential Revision: https://reviews.llvm.org/D45419 llvm-svn: 332787
2018-05-19 07:53:46 +08:00
!0 = !{}