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| author | Dan Gohman <gohman@apple.com> | 2010-09-17 01:38:06 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2010-09-17 01:38:06 +0000 |
| commit | 8ee731f2ce62d936f81c12283a192375a87f323a (patch) | |
| tree | 8389e69e02c397ba3aedae4cc18e8150ee31ea3b /test | |
| parent | 11f51ca6f9886b9d548a64028c16c3709fe32fac (diff) | |
| download | external_llvm-8ee731f2ce62d936f81c12283a192375a87f323a.zip external_llvm-8ee731f2ce62d936f81c12283a192375a87f323a.tar.gz external_llvm-8ee731f2ce62d936f81c12283a192375a87f323a.tar.bz2 | |
Fix the folding of floating-point math library calls, like sin(infinity),
so that it detects errors on platforms where libm doesn't set errno.
It's still subject to host libm details though.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114148 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/Transforms/InstCombine/fold-calls.ll | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/fold-calls.ll b/test/Transforms/InstCombine/fold-calls.ll new file mode 100644 index 0000000..2b11771 --- /dev/null +++ b/test/Transforms/InstCombine/fold-calls.ll @@ -0,0 +1,19 @@ +; RUN: opt -instcombine -S < %s | FileCheck %s + +; This shouldn't fold, because sin(inf) is invalid. +; CHECK: @foo +; CHECK: %t = call double @sin(double 0x7FF0000000000000) +define double @foo() { + %t = call double @sin(double 0x7FF0000000000000) + ret double %t +} + +; This should fold. +; CHECK: @bar +; CHECK: ret double 0x3FDA6026360C2F91 +define double @bar() { + %t = call double @sin(double 9.0) + ret double %t +} + +declare double @sin(double) |