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| author | Gabor Buella <gabor.buella@intel.com> | 2018-04-13 07:35:08 +0000 |
|---|---|---|
| committer | Gabor Buella <gabor.buella@intel.com> | 2018-04-13 07:35:08 +0000 |
| commit | 604be4424bdc2ad62a386ad656ea287e1adde05f (patch) | |
| tree | 3cee2e03a33c8755623a1e1145d0245b1814dfc6 /llvm/test/CodeGen | |
| parent | 8293161712e68ff966d5dbfb623c5e33d96331f0 (diff) | |
| download | bcm5719-llvm-604be4424bdc2ad62a386ad656ea287e1adde05f.tar.gz bcm5719-llvm-604be4424bdc2ad62a386ad656ea287e1adde05f.zip | |
[X86] Introduce cldemote instruction
Hint to hardware to move the cache line containing the
address to a more distant level of the cache without
writing back to memory.
Reviewers: craig.topper, zvi
Reviewed By: craig.topper
Differential Revision: https://reviews.llvm.org/D45256
llvm-svn: 329992
Diffstat (limited to 'llvm/test/CodeGen')
| -rw-r--r-- | llvm/test/CodeGen/X86/cldemote-intrinsic.ll | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/X86/cldemote-intrinsic.ll b/llvm/test/CodeGen/X86/cldemote-intrinsic.ll new file mode 100644 index 00000000000..83167456ac9 --- /dev/null +++ b/llvm/test/CodeGen/X86/cldemote-intrinsic.ll @@ -0,0 +1,21 @@ +; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py +; RUN: llc < %s -mtriple=x86_64-linux -mattr=+cldemote | FileCheck %s --check-prefix=X64 +; RUN: llc < %s -mtriple=i386-pc-linux -mattr=+cldemote | FileCheck %s --check-prefix=X32 + +define void @test_cldemote(i8* %p) { +; X64-LABEL: test_cldemote: +; X64: # %bb.0: # %entry +; X64-NEXT: cldemote (%rdi) +; X64-NEXT: retq +; +; X32-LABEL: test_cldemote: +; X32: # %bb.0: # %entry +; X32-NEXT: movl {{[0-9]+}}(%esp), %eax +; X32-NEXT: cldemote (%eax) +; X32-NEXT: retl +entry: + tail call void @llvm.x86.cldemote(i8* %p) + ret void +} + +declare void @llvm.x86.cldemote(i8*) |
