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| author | Bob Wilson <bob.wilson@apple.com> | 2010-02-24 22:15:53 +0000 |
|---|---|---|
| committer | Bob Wilson <bob.wilson@apple.com> | 2010-02-24 22:15:53 +0000 |
| commit | e742bb53a3e68b88eac172782fd99cd98f89f4b3 (patch) | |
| tree | 342764506253708aa7d8f7df8daaab52cc0d1fb7 /test/CodeGen/ARM/neon_minmax.ll | |
| parent | c382bc3c0f476bf94303d9892af4e2cee173bfe5 (diff) | |
Check for comparisons of +/- zero when optimizing less-than-or-equal and
greater-than-or-equal SELECT_CCs to NEON vmin/vmax instructions. This is
only allowed when UnsafeFPMath is set or when at least one of the operands
is known to be nonzero.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97065 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/ARM/neon_minmax.ll')
| -rw-r--r-- | test/CodeGen/ARM/neon_minmax.ll | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/neon_minmax.ll b/test/CodeGen/ARM/neon_minmax.ll index 64349d650e9..d301c6a4ca9 100644 --- a/test/CodeGen/ARM/neon_minmax.ll +++ b/test/CodeGen/ARM/neon_minmax.ll @@ -8,6 +8,14 @@ define float @fmin_ole(float %x) nounwind { ret float %min1 } +define float @fmin_ole_zero(float %x) nounwind { +;CHECK: fmin_ole_zero: +;CHECK-NOT: vmin.f32 + %cond = fcmp ole float 0.0, %x + %min1 = select i1 %cond, float 0.0, float %x + ret float %min1 +} + define float @fmin_ult(float %x) nounwind { ;CHECK: fmin_ult: ;CHECK: vmin.f32 @@ -32,6 +40,14 @@ define float @fmax_uge(float %x) nounwind { ret float %max1 } +define float @fmax_uge_zero(float %x) nounwind { +;CHECK: fmax_uge_zero: +;CHECK-NOT: vmax.f32 + %cond = fcmp uge float %x, 0.0 + %max1 = select i1 %cond, float %x, float 0.0 + ret float %max1 +} + define float @fmax_olt_reverse(float %x) nounwind { ;CHECK: fmax_olt_reverse: ;CHECK: vmax.f32 |