Fix min_vec_size.ll test for changes in vector-combine

[tex3d]

Running the vector-combine pass on this test now produces a single shuffle on a loaded <1 x float> instead of an insert into a <2 x float> followed by a shuffle.

This test change matches changes in other tests in PR #144690, which introduced the optimization.

[llvmbot]

@llvm/pr-subscribers-backend-directx

Author: Tex Riddell (tex3d)

Changes

Running the vector-combine pass on this test now produces a single shuffle on a loaded <1 x float> instead of an insert into a <2 x float> followed by a shuffle. This looks like a valid optimization.

---

Full diff: https://github.com/llvm/llvm-project/pull/145392.diff

1 Files Affected:

• (modified) llvm/test/CodeGen/DirectX/min_vec_size.ll (+1-2)

diff --git a/llvm/test/CodeGen/DirectX/min_vec_size.ll b/llvm/test/CodeGen/DirectX/min_vec_size.ll
index ba6e83ea83733..a2883a4945774 100644
--- a/llvm/test/CodeGen/DirectX/min_vec_size.ll
+++ b/llvm/test/CodeGen/DirectX/min_vec_size.ll
@@ -6,8 +6,7 @@ target triple = "dxil-unknown-shadermodel6.7-library"
 ; Make sure vec combine min vec size is 1 instead of 4 for float.
 ; CHECK:@foo()
 ; CHECK-NEXT:%[[LD:[0-9]+]] = load <1 x float>, ptr @a, align 8
-; CHECK-NEXT:%insert = shufflevector <1 x float> %[[LD]], <1 x float> poison, <2 x i32> <i32 0, i32 poison>
-; CHECK-NEXT:%shuffle = shufflevector <2 x float> %insert, <2 x float> poison, <2 x i32> zeroinitializer
+; CHECK-NEXT:%shuffle = shufflevector <1 x float> %1, <1 x float> poison, <2 x i32> zeroinitializer
 ; CHECK-NEXT:ret <2 x float> %shuffle
 
 @a = external local_unnamed_addr constant float

[bogner]

Might be worth mentioning #144690 in the commit message as the reason this changed. Note that the test change here does match the test changes that were introduced in that PR.

[tex3d]

The failures from the Build and Test Linux check must be unrelated:

Unresolved Tests (3):
  lldb-api :: commands/expression/import-std-module/basic/TestImportStdModule.py
  lldb-api :: commands/expression/import-std-module/conflicts/TestStdModuleWithConflicts.py
  lldb-api :: commands/expression/import-std-module/retry-with-std-module/TestRetryWithStdModule.py