[llvm] [GlobalISel] Add boolean predicated legalization action methods. (PR #111287)

[Matt Arsenault via llvm-commits]

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@@ -215,19 +215,10 @@ AArch64LegalizerInfo::AArch64LegalizerInfo(const AArch64Subtarget &ST)
       .legalFor({s64, v8s16, v16s8, v4s32})
       .lower();
 
-  auto &MinMaxActions = getActionDefinitionsBuilder(
-      {G_SMIN, G_SMAX, G_UMIN, G_UMAX});
-  if (HasCSSC)
-    MinMaxActions
-        .legalFor({s32, s64, v8s8, v16s8, v4s16, v8s16, v2s32, v4s32})
-        // Making clamping conditional on CSSC extension as without legal types we
-        // lower to CMP which can fold one of the two sxtb's we'd otherwise need
-        // if we detect a type smaller than 32-bit.
-        .minScalar(0, s32);
-  else
-    MinMaxActions
-        .legalFor({v8s8, v16s8, v4s16, v8s16, v2s32, v4s32});
-  MinMaxActions
+  getActionDefinitionsBuilder({G_SMIN, G_SMAX, G_UMIN, G_UMAX})
+      .legalFor({v8s8, v16s8, v4s16, v8s16, v2s32, v4s32})
+      .legalFor(HasCSSC, {s32, s64})
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arsenm wrote:

Ideally this could fuse into one rule with all of the types in the list, but I doubt there's a way to make that pretty

https://github.com/llvm/llvm-project/pull/111287