[llvm] [ConstantantFolding] Add support for `sinh` and `cosh` intrinsics constant folding (PR #132671)

[Matt Arsenault via llvm-commits]

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@@ -33,4 +127,64 @@ define <2 x double> @test_cosh_v2() {
   ret <2 x double> %result
 }
 
+define double @test_cosh_neg0() {
+; CHECK-LABEL: define double @test_cosh_neg0() {
+; CHECK-NEXT:    ret double 1.000000e+00
+;
+  %res = call double @llvm.cosh.f64(double -0.0)
+  ret double %res
+}
+
+define double @test_cosh_poison() {
+; CHECK-LABEL: define double @test_cosh_poison() {
+; CHECK-NEXT:    [[RES:%.*]] = call double @llvm.cosh.f64(double poison)
+; CHECK-NEXT:    ret double [[RES]]
+;
+  %res = call double @llvm.cosh.f64(double poison)
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arsenm wrote:

poison should propagate 

https://github.com/llvm/llvm-project/pull/132671