[llvm] [DAG] Add generic expansion for ISD::FCANONICALIZE nodes (PR #142105)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,131 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --default-march s390x-unknown-linux-gnu --version 5
+; RUN: llc -mtriple=s390x-linux-gnu -mcpu=z16 < %s | FileCheck %s -check-prefixes=Z16
+
+define float @canonicalize_fp32(float %a) {
+; Z16-LABEL: canonicalize_fp32:
+; Z16:       # %bb.0:
+; Z16-NEXT:    vgmf %v1, 2, 8
+; Z16-NEXT:    meebr %f0, %f1
+; Z16-NEXT:    br %r14
+  %canonicalized = call float @llvm.canonicalize.f32(float %a)
+  ret float %canonicalized
+}
+
+define double @canonicalize_fp64(double %a) {
+; Z16-LABEL: canonicalize_fp64:
+; Z16:       # %bb.0:
+; Z16-NEXT:    vgmg %v1, 2, 11
+; Z16-NEXT:    mdbr %f0, %f1
+; Z16-NEXT:    br %r14
+  %canonicalized = call double @llvm.canonicalize.f64(double %a)
+  ret double %canonicalized
+}
+
+define void @canonicalize_ptr_f32(float * %out) {
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arsenm wrote:

Test should be updated to use opaque pointers 

https://github.com/llvm/llvm-project/pull/142105