[llvm] [NVPTX] Propagate truncate to operands (PR #98666)

[Artem Belevich via llvm-commits]

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@@ -0,0 +1,84 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc < %s -march=nvptx64 | FileCheck %s
+; RUN: %if ptxas %{ llc < %s -march=nvptx64 | %ptxas-verify %}
+
+target triple = "nvptx64-nvidia-cuda"
+
+define i32 @trunc(i64 %a, i64 %b) {
+; CHECK-LABEL: trunc(
+; CHECK:       {
+; CHECK-NEXT:    .reg .b32 %r<4>;
+; CHECK-EMPTY:
+; CHECK-NEXT:  // %bb.0:
+; CHECK-NEXT:    ld.param.u32 %r1, [trunc_param_0];
+; CHECK-NEXT:    ld.param.u32 %r2, [trunc_param_1];
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Artem-B wrote:

Do the tests pass with ptxas enabled? 

`trunc_param_*` are probably declared as b64/u64/s64. I want to make sure that ptxas does allow loading from them using `u32`.


https://github.com/llvm/llvm-project/pull/98666