Move swiftshader off deprecated llvm::IRBuilder APIs
Move swiftshader off deprecated llvm::IRBuilder APIs

These are being removed in
https://github.com/llvm/llvm-project/commit/89eb85ac6eab6431ef72ef705d560c72c5ed71f3

The replacements have been around for a long time.

Change-Id: I8e250269c32bda8b95fb5e2967d0375b76f17f7e
Bug: b/208927195
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/60488
Kokoro-Result: kokoro <2ac7b1f3fa578934c95181d4272be0d3bca00121@google.com>
Reviewed-by: Nicolas Capens <51edc787c30f24c4904e8ffbb5523c3a9f7a451d@google.com>
Tested-by: Benjamin Kramer <372985a95acf56297de9d779abaaee9bd47b3ed3@google.com>
Commit-Queue: Benjamin Kramer <372985a95acf56297de9d779abaaee9bd47b3ed3@google.com>

google/swiftshader,google/swiftshader,google/swiftshader