[llvm] [AMDGPU] SIPeepholeSDWA: Disable on existing SDWA instructions (PR #123942)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,85 @@
+; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx1030 -o - < %s | FileCheck -check-prefix=CHECK %s
+
+; CHECK-NOT: v_lshlrev_b32_sdwa v{{[0-9]}}, v{{[0-9]}}, v{{[0-9]}} dst_sel:DWORD dst_unused:UNUSED_PAD src0_sel:DWORD src1_sel:WORD_1
+
+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-S32-A5-G1-ni:7:8:9"
+target triple = "amdgcn-amd-amdhsa"
+
+define amdgpu_kernel void @kernel(ptr addrspace(1) %input.coerce, i32 %0, i1 %cmp3.i, i32 %add5.1, ptr addrspace(3) %1, ptr addrspace(3) %2) {
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arsenm wrote:

named values 

https://github.com/llvm/llvm-project/pull/123942