[llvm] a1f30c2 - [NFC] [DirectX] Update DirectX codegen test `CBufferAccess/gep-ce-two-uses.ll` due to changes to ReplaceConstant (#169848)

[via llvm-commits]

Author: Deric C.
Date: 2025-11-27T12:02:15-08:00
New Revision: a1f30c24ea2cf7d3acdd0f6eed19f737ae26b0d2

URL: https://github.com/llvm/llvm-project/commit/a1f30c24ea2cf7d3acdd0f6eed19f737ae26b0d2
DIFF: https://github.com/llvm/llvm-project/commit/a1f30c24ea2cf7d3acdd0f6eed19f737ae26b0d2.diff

LOG: [NFC] [DirectX] Update DirectX codegen test `CBufferAccess/gep-ce-two-uses.ll` due to changes to ReplaceConstant (#169848)

Fixes an LLVM DirectX codegen test after it broke due to #169141

The CBuffer loads and GEPs are no longer duplicated when there are two
or more accesses within the same basic block.
This PR removes the duplicate check for CBuffer load and GEP from the
original test function `@f` and adds a new test function `@g` which
places duplicate CBuffer loads into separate basic blocks.

Added: 
    

Modified: 
    llvm/test/CodeGen/DirectX/CBufferAccess/gep-ce-two-uses.ll

Removed: 
    


################################################################################
diff  --git a/llvm/test/CodeGen/DirectX/CBufferAccess/gep-ce-two-uses.ll b/llvm/test/CodeGen/DirectX/CBufferAccess/gep-ce-two-uses.ll
index 4eda6353f47ed..97896e598de90 100644
--- a/llvm/test/CodeGen/DirectX/CBufferAccess/gep-ce-two-uses.ll
+++ b/llvm/test/CodeGen/DirectX/CBufferAccess/gep-ce-two-uses.ll
@@ -21,6 +21,22 @@ entry:
   %a1 = load float, ptr addrspace(2) getelementptr inbounds nuw (i8, ptr addrspace(2) @a1, i32 16), align 4
   store float %a1, ptr %dst, align 32
 
+  %a2 = load float, ptr addrspace(2) getelementptr inbounds nuw (i8, ptr addrspace(2) @a1, i32 16), align 4
+  store float %a2, ptr %dst, align 32
+
+  ret void
+}
+
+; CHECK: define void @g
+define void @g(ptr %dst) {
+entry:
+  ; CHECK: [[PTR:%.*]] = call ptr addrspace(2) @llvm.dx.resource.getpointer.{{.*}}(target("dx.CBuffer", %__cblayout_CB) {{%.*}}, i32 0)
+  ; CHECK: getelementptr inbounds nuw i8, ptr addrspace(2) [[PTR]], i32 16
+  %a1 = load float, ptr addrspace(2) getelementptr inbounds nuw (i8, ptr addrspace(2) @a1, i32 16), align 4
+  store float %a1, ptr %dst, align 32
+  br label %next
+
+next:
   ; CHECK: [[PTR:%.*]] = call ptr addrspace(2) @llvm.dx.resource.getpointer.{{.*}}(target("dx.CBuffer", %__cblayout_CB) {{%.*}}, i32 0)
   ; CHECK: getelementptr inbounds nuw i8, ptr addrspace(2) [[PTR]], i32 16
   %a2 = load float, ptr addrspace(2) getelementptr inbounds nuw (i8, ptr addrspace(2) @a1, i32 16), align 4