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| -rw-r--r-- | test/Transforms/InstCombine/2006-12-05-fp-to-int-ext.ll | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/2006-12-05-fp-to-int-ext.ll b/test/Transforms/InstCombine/2006-12-05-fp-to-int-ext.ll new file mode 100644 index 0000000000..ca552a5d87 --- /dev/null +++ b/test/Transforms/InstCombine/2006-12-05-fp-to-int-ext.ll @@ -0,0 +1,13 @@ +; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep zext + +; Never merge these two conversions, even though it's possible: this is +; significantly more expensive than the two conversions on some targets +; and it causes libgcc to be compile __fixunsdfdi into a recursive +; function. + + +long %test(double %D) { + %A = fptoui double %D to uint + %B = zext uint %A to long + ret long %B +} |