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testsuite: Tests the pattern folding x/sqrt(x) to sqrt(x) for Float16

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As a follow-up to adding a pattern that folds x/sqrt(x) to sqrt(x) in match.pd, this patch adds a test case for type Float16 for armv8.2-a+fp16.

The patch was bootstrapped and regtested on aarch64-linux-gnu, no regression.

Signed-off-by: Jennifer Schmitz <jschmitz@nvidia.com>

gcc/testsuite/

	* gcc.target/aarch64/sqrt_div_float16.c: New test.
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Jennifer Schmitz 2024-07-10 12:54:01 +05:30 • committed by Kyrylo Tkachov
parent 6fce4664d4
commit 1ae5fc24e8
1 changed files with 14 additions and 0 deletions
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gcc/testsuite/gcc.target/aarch64/sqrt_div_float16.c Normal file
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/* { dg-do compile } */
/* { dg-options "-O2 -ffast-math -fdump-tree-forwprop-details" } */
/* { dg-require-effective-target c99_runtime } */
#pragma GCC target ("arch=armv8.2-a+fp16")
_Float16 f (_Float16 x)
{
_Float16 t1 = __builtin_sqrt (x);
_Float16 t2 = x / t1;
return t2;
}
/* { dg-final { scan-tree-dump "gimple_simplified to t2_\[0-9\]+ = .SQRT .x_\[0-9\]*.D.." "forwprop1" } } */