diff options
| author | Tim Northover <tnorthover@apple.com> | 2014-05-02 17:25:02 +0000 |
|---|---|---|
| committer | Tim Northover <tnorthover@apple.com> | 2014-05-02 17:25:02 +0000 |
| commit | b20252764dd2d68e4334dcf127b3b683226dc72b (patch) | |
| tree | ea7f86f72346c12bcce4e0b677702bf534add22c /test | |
| parent | 3cddd1607c3e48853870275a080d16a63ed0d6ef (diff) | |
| download | llvm-b20252764dd2d68e4334dcf127b3b683226dc72b.tar.gz llvm-b20252764dd2d68e4334dcf127b3b683226dc72b.tar.bz2 llvm-b20252764dd2d68e4334dcf127b3b683226dc72b.tar.xz | |
DAGCombine: prevent formation of illegal ConstantFP nodes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207850 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/ARM64/fp-contract-zero.ll | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/test/CodeGen/ARM64/fp-contract-zero.ll b/test/CodeGen/ARM64/fp-contract-zero.ll new file mode 100644 index 0000000000..f982cbb7f5 --- /dev/null +++ b/test/CodeGen/ARM64/fp-contract-zero.ll @@ -0,0 +1,14 @@ +; RUN: llc -mtriple=arm64 -fp-contract=fast -o - %s | FileCheck %s + + +; Make sure we don't try to fold an fneg into +0.0, creating an illegal constant +; -0.0. It's also good, though not essential, that we don't resort to a litpool. +define double @test_fms_fold(double %a, double %b) { +; CHECK-LABEL: test_fms_fold: +; CHECK: fmov {{d[0-9]+}}, xzr +; CHECK: ret + %mul = fmul double %a, 0.000000e+00 + %mul1 = fmul double %b, 0.000000e+00 + %sub = fsub double %mul, %mul1 + ret double %sub +}
\ No newline at end of file |