[llvm] [InstCombine] Add support for Instruction combining of hyperbolic functions (PR #173730)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,79 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt < %s -passes=instcombine -S | FileCheck %s
+
+define double @src_cosh(double noundef %x) {
+; CHECK-LABEL: @src_cosh(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[TMP0:%.*]] = tail call nnan double @llvm.cosh.f64(double [[X:%.*]])
+; CHECK-NEXT:    ret double [[TMP0]]
+;
+entry:
+  %fneg = fneg double %x
+  %ret = tail call nnan double @llvm.cosh.f64(double %fneg)
+  ret double %ret
+}
+
+define double @tgt_cosh(double noundef %x) {
+; CHECK-LABEL: @tgt_cosh(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[TMP0:%.*]] = tail call nnan double @llvm.cosh.f64(double [[X:%.*]])
+; CHECK-NEXT:    ret double [[TMP0]]
+;
+entry:
+  %ret = tail call nnan double @llvm.cosh.f64(double %x)
+  ret double %ret
+}
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arsenm wrote:

Don't need these no-op tat tests 

https://github.com/llvm/llvm-project/pull/173730