[llvm] [DAGCombiner][AArch64] Make combineCarryDiamond avoid creating UADDO_CARRY with carry in larger than setcc result type. (PR #89121)

[Craig Topper via llvm-commits]

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@@ -0,0 +1,28 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 4
+; RUN: llc < %s -mtriple=aarch64 | FileCheck %s
+
+define i32 @f(ptr %0, i41 %1, ptr %2) {
+; CHECK-LABEL: f:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    and w9, w1, #0x1
+; CHECK-NEXT:    mov w10, #1 // =0x1
+; CHECK-NEXT:    mov x8, x0
+; CHECK-NEXT:    cmp w9, #1
+; CHECK-NEXT:    mov w0, wzr
+; CHECK-NEXT:    adc x9, xzr, x10
+; CHECK-NEXT:    str x9, [x2]
+; CHECK-NEXT:    str xzr, [x8]
+; CHECK-NEXT:    ret
+  %new0 = and i41 %1, 1
+  %last = trunc i41 %new0 to i1
+  %4 = add i64 0, 1
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topperc wrote:

Why?

https://github.com/llvm/llvm-project/pull/89121