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| author | Artur Gainullin <artur.gainullin@intel.com> | 2017-10-27 20:53:41 +0000 |
|---|---|---|
| committer | Artur Gainullin <artur.gainullin@intel.com> | 2017-10-27 20:53:41 +0000 |
| commit | af7ba8ff6bfc6688419bf863f613b8ed16852879 (patch) | |
| tree | e7a4ee0ace5939a0c474f62e58b1b0ba8304f413 /llvm/test/CodeGen/NVPTX/minmax-negative.ll | |
| parent | a0183b30c52d63d525b33dd154a4f06e44485d87 (diff) | |
| download | bcm5719-llvm-af7ba8ff6bfc6688419bf863f613b8ed16852879.tar.gz bcm5719-llvm-af7ba8ff6bfc6688419bf863f613b8ed16852879.zip | |
Improve clamp recognition in ValueTracking.
Summary:
ValueTracking was recognizing not all variations of clamp. Swapping of
true value and false value of select was added to fix this problem. The
first patch was reverted because it caused miscompile in NVPTX target.
Added corresponding test cases.
Reviewers: spatel, majnemer, efriedma, reames
Subscribers: llvm-commits, jholewinski
Differential Revision: https://reviews.llvm.org/D39240
llvm-svn: 316795
Diffstat (limited to 'llvm/test/CodeGen/NVPTX/minmax-negative.ll')
| -rw-r--r-- | llvm/test/CodeGen/NVPTX/minmax-negative.ll | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/NVPTX/minmax-negative.ll b/llvm/test/CodeGen/NVPTX/minmax-negative.ll new file mode 100644 index 00000000000..73bd9e049e7 --- /dev/null +++ b/llvm/test/CodeGen/NVPTX/minmax-negative.ll @@ -0,0 +1,9 @@ +; RUN: llc < %s -march=nvptx -O0 | FileCheck %s + +define i16 @test1(i16* %sur1) { +; CHECK-NOT: mov.u16 %rs{{[0-9]+}}, 32767 + %_tmp21.i = icmp sle i16 0, 0 + %_tmp22.i = select i1 %_tmp21.i, i16 0, i16 32767 + store i16 %_tmp22.i, i16* %sur1 + ret i16 0 +} |
