[llvm] [WIP] Extend data layout to add non zero null value for address space. (PR #83109)

[Rana Pratap Reddy via llvm-commits]

================
@@ -0,0 +1,20 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
+; RUN: opt < %s -S -mtriple=amdgcn-- | FileCheck %s
+
+; CHECK: target datalayout = "e-p:64:64-p1:64:64-p2:32:32-p3:32:32-p4:64:64-p5:32:32-p6:32:32-p7:160:256:256:32-p8:128:128-p9:192:256:256:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-z3:1-S32-A5-G1-ni:7:8:9"
+target datalayout = "e-p:64:64-p1:64:64-p2:32:32-p3:32:32-p4:64:64-p5:32:32-p6:32:32-p7:160:256:256:32-p8:128:128-p9:192:256:256:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-z3:1-S32-A5-G1-ni:7:8:9"
----------------
ranapratap55 wrote:

updated 2, 3, and 5 values to neg(-1) and 0 for all other address spaces.

https://github.com/llvm/llvm-project/pull/83109