================
@@ -0,0 +1,65 @@
+; Test copysign intrinsics involving half.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+declare half @llvm.copysign.f16(half, half)
+declare float @llvm.copysign.f32(float, float)
+declare double @llvm.copysign.f64(double, double)
+
+; Test f16 copies.
+define half @f0(half %a, half %b) {
+; CHECK-LABEL: f0:
+; CHECK: brasl %r14, __extendhfsf2@PLT
+; CHECK: brasl %r14, __extendhfsf2@PLT
+; CHECK: cpsdr %f0, %f9, %f0
+; CHECK: brasl %r14, __truncsfhf2@PLT
+; CHECK: br %r14
+ %res = call half @llvm.copysign.f16(half %a, half %b)
----------------
tgross35 wrote:
(Nonblocker) a few other architectures use an asm lowering to avoid the calls
here, it's just `(a & !MASK) | (Y & MASK)` with `MASK = 1 << 15`.
https://github.com/llvm/llvm-project/pull/109164
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