[llvm] [AIX] Handle arbitrary sized integers when lowering formal arguments passed on the stack (PR #149351)

[David Tenty via llvm-commits]

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@@ -0,0 +1,33 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc --verify-machineinstrs -mtriple powerpc-ibm-aix-xcoff \
+; RUN:   -mcpu=pwr8 < %s | FileCheck %s --check-prefixes=CHECK,CHECK32
+; RUN: llc --verify-machineinstrs -mtriple powerpc64-ibm-aix-xcoff \
+; RUN:   -mcpu=pwr8 < %s | FileCheck %s --check-prefixes=CHECK,CHECK64
+
+define ptr @lower_args(ptr %_0, i32 %0, i32 %1, i32 %2, i32 %3, ptr %4, ptr %5, i64 %6, i24 %7) {
+; CHECK-LABEL: lower_args:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    blr
+entry:
+  ret ptr %_0
+}
+
+define i32 @lower_args2(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e, i32 %f, i32 %g, i32 %h, i24 %i) {
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daltenty wrote:

nit: I guess you could add the other case with an explicit sign extension.

https://github.com/llvm/llvm-project/pull/149351