[llvm] [AMDGPU] - Add s_quadmask intrinsics (PR #70804)

[Jay Foad via llvm-commits]

================
@@ -0,0 +1,90 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 2
+; NOTE: llc -march=amdgcn -mcpu=gfx1100 -amdgpu-enable-delay-alu=0 -global-isel=1 -verify-machineinstrs < %s | FileCheck  -check-prefixes=GFX11 %s
+; RUN: llc -march=amdgcn -mcpu=gfx1100 -amdgpu-enable-delay-alu=0 -global-isel=0 -verify-machineinstrs < %s | FileCheck  -check-prefixes=GFX11 %s
+
+declare i32 @llvm.amdgcn.s.quadmask.i32(i32)
+declare i64 @llvm.amdgcn.s.quadmask.i64(i64)
+
+define i32 @test_quadmask_constant_i32() {
+; GFX11-LABEL: test_quadmask_constant_i32:
+; GFX11:       ; %bb.0: ; %entry
+; GFX11-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GFX11-NEXT:    s_quadmask_b32 s0, 0x85fe3a92
----------------
jayfoad wrote:

Could constant fold this at the IR level, as a follow up.

https://github.com/llvm/llvm-project/pull/70804