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merged 2 commits into from
Nov 20, 2025
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AMDGPU: Expand cost model shufflevector test #168816

merged 2 commits into from
Nov 20, 2025
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@nhaehnle nhaehnle commented Nov 20, 2025 •
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AMDGPU: Autogenerate checks in a test
867aab8 
commit-id:eb3ee40e
@nhaehnle
AMDGPU: Expand cost model shufflevector test
3991131 
Add a few corner cases of the "simplified" shuffle kinds.

commit-id:bde3e2a7
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@llvmbot llvmbot added backend:AMDGPU llvm:analysis Includes value tracking, cost tables and constant folding labels Nov 20, 2025
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llvmbot commented Nov 20, 2025

@llvm/pr-subscribers-backend-amdgpu

Author: Nicolai Hähnle (nhaehnle)

Changes

Add a few corner cases of the "simplified" shuffle kinds.

Stack:

  • [6/6] #168820
  • [5/6] #168819
  • [4/6] #168818
  • [3/6] #168817
  • [2/6] #168816 ⬅
  • [1/6] #168815

⚠️ Part of a stack created by spr. Merging this PR using the GitHub UI may have unexpected results.

Full diff: https://github.com/llvm/llvm-project/pull/168816.diff

1 Files Affected:

  • (modified) llvm/test/Analysis/CostModel/AMDGPU/shufflevector.ll (+50)
diff --git a/llvm/test/Analysis/CostModel/AMDGPU/shufflevector.ll b/llvm/test/Analysis/CostModel/AMDGPU/shufflevector.ll
index 3aa682cd2971c..b66e19e8bc563 100644
--- a/llvm/test/Analysis/CostModel/AMDGPU/shufflevector.ll
+++ b/llvm/test/Analysis/CostModel/AMDGPU/shufflevector.ll
@@ -1144,3 +1144,53 @@ define void @concat(<2 x i8> %i8v2, <2 x i8> %i8v2_2, <4 x i8> %i8v4, <4 x i8> %
   %v4f64_2 = shufflevector <2 x double> %doublev2, <2 x double> %doublev2_2, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
   ret void
 }
+
+define void @insert(<16 x i8> %i8v16, <16 x i8> %i8v16_2) {
+; ALL-LABEL: 'insert'
+; ALL-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %test0 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 16, i32 17, i32 18, i32 19, i32 20, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+; ALL-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %test1 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+; ALL-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %test2 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+; ALL-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: %test3 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 16, i32 17, i32 18, i32 19, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+; ALL-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: %test4 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+; ALL-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: %test5 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 16, i32 17, i32 18, i32 19>
+; ALL-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: %test6 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21>
+; ALL-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: %test7 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 1, i32 16, i32 17, i32 18, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+; ALL-NEXT:  Cost Model: Found an estimated cost of 10 for instruction: ret void
+;
+; ALL-SIZE-LABEL: 'insert'
+; ALL-SIZE-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %test0 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 16, i32 17, i32 18, i32 19, i32 20, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+; ALL-SIZE-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %test1 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+; ALL-SIZE-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %test2 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+; ALL-SIZE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: %test3 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 16, i32 17, i32 18, i32 19, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+; ALL-SIZE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: %test4 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+; ALL-SIZE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: %test5 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 16, i32 17, i32 18, i32 19>
+; ALL-SIZE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: %test6 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21>
+; ALL-SIZE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: %test7 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 1, i32 16, i32 17, i32 18, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+; ALL-SIZE-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: ret void
+;
+  %test0 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 16, i32 17, i32 18, i32 19, i32 20, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+  %test1 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+  %test2 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+  %test3 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 16, i32 17, i32 18, i32 19, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+  %test4 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+  %test5 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 16, i32 17, i32 18, i32 19>
+  %test6 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21>
+  %test7 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 1, i32 16, i32 17, i32 18, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+  ret void
+}
+
+define void @splice(<16 x i8> %i8v16, <16 x i8> %i8v16_2) {
+; ALL-LABEL: 'splice'
+; ALL-NEXT:  Cost Model: Found an estimated cost of 8 for instruction: %test0 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27>
+; ALL-NEXT:  Cost Model: Found an estimated cost of 8 for instruction: %test1 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 10, i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25>
+; ALL-NEXT:  Cost Model: Found an estimated cost of 10 for instruction: ret void
+;
+; ALL-SIZE-LABEL: 'splice'
+; ALL-SIZE-NEXT:  Cost Model: Found an estimated cost of 8 for instruction: %test0 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27>
+; ALL-SIZE-NEXT:  Cost Model: Found an estimated cost of 8 for instruction: %test1 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 10, i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25>
+; ALL-SIZE-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: ret void
+;
+  %test0 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27>
+  %test1 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 10, i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25>
+  ret void
+}

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llvmbot commented Nov 20, 2025

@llvm/pr-subscribers-llvm-analysis

Author: Nicolai Hähnle (nhaehnle)

Changes

Add a few corner cases of the "simplified" shuffle kinds.

Stack:

  • [6/6] #168820
  • [5/6] #168819
  • [4/6] #168818
  • [3/6] #168817
  • [2/6] #168816 ⬅
  • [1/6] #168815

⚠️ Part of a stack created by spr. Merging this PR using the GitHub UI may have unexpected results.

Full diff: https://github.com/llvm/llvm-project/pull/168816.diff

1 Files Affected:

  • (modified) llvm/test/Analysis/CostModel/AMDGPU/shufflevector.ll (+50)
diff --git a/llvm/test/Analysis/CostModel/AMDGPU/shufflevector.ll b/llvm/test/Analysis/CostModel/AMDGPU/shufflevector.ll
index 3aa682cd2971c..b66e19e8bc563 100644
--- a/llvm/test/Analysis/CostModel/AMDGPU/shufflevector.ll
+++ b/llvm/test/Analysis/CostModel/AMDGPU/shufflevector.ll
@@ -1144,3 +1144,53 @@ define void @concat(<2 x i8> %i8v2, <2 x i8> %i8v2_2, <4 x i8> %i8v4, <4 x i8> %
   %v4f64_2 = shufflevector <2 x double> %doublev2, <2 x double> %doublev2_2, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
   ret void
 }
+
+define void @insert(<16 x i8> %i8v16, <16 x i8> %i8v16_2) {
+; ALL-LABEL: 'insert'
+; ALL-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %test0 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 16, i32 17, i32 18, i32 19, i32 20, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+; ALL-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %test1 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+; ALL-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %test2 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+; ALL-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: %test3 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 16, i32 17, i32 18, i32 19, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+; ALL-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: %test4 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+; ALL-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: %test5 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 16, i32 17, i32 18, i32 19>
+; ALL-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: %test6 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21>
+; ALL-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: %test7 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 1, i32 16, i32 17, i32 18, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+; ALL-NEXT:  Cost Model: Found an estimated cost of 10 for instruction: ret void
+;
+; ALL-SIZE-LABEL: 'insert'
+; ALL-SIZE-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %test0 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 16, i32 17, i32 18, i32 19, i32 20, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+; ALL-SIZE-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %test1 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+; ALL-SIZE-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %test2 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+; ALL-SIZE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: %test3 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 16, i32 17, i32 18, i32 19, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+; ALL-SIZE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: %test4 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+; ALL-SIZE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: %test5 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 16, i32 17, i32 18, i32 19>
+; ALL-SIZE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: %test6 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21>
+; ALL-SIZE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: %test7 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 1, i32 16, i32 17, i32 18, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+; ALL-SIZE-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: ret void
+;
+  %test0 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 16, i32 17, i32 18, i32 19, i32 20, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+  %test1 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+  %test2 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+  %test3 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 16, i32 17, i32 18, i32 19, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+  %test4 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+  %test5 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 16, i32 17, i32 18, i32 19>
+  %test6 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21>
+  %test7 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 0, i32 1, i32 16, i32 17, i32 18, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+  ret void
+}
+
+define void @splice(<16 x i8> %i8v16, <16 x i8> %i8v16_2) {
+; ALL-LABEL: 'splice'
+; ALL-NEXT:  Cost Model: Found an estimated cost of 8 for instruction: %test0 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27>
+; ALL-NEXT:  Cost Model: Found an estimated cost of 8 for instruction: %test1 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 10, i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25>
+; ALL-NEXT:  Cost Model: Found an estimated cost of 10 for instruction: ret void
+;
+; ALL-SIZE-LABEL: 'splice'
+; ALL-SIZE-NEXT:  Cost Model: Found an estimated cost of 8 for instruction: %test0 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27>
+; ALL-SIZE-NEXT:  Cost Model: Found an estimated cost of 8 for instruction: %test1 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 10, i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25>
+; ALL-SIZE-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: ret void
+;
+  %test0 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27>
+  %test1 = shufflevector <16 x i8> %i8v16, <16 x i8> %i8v16_2, <16 x i32> <i32 10, i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25>
+  ret void
+}

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nhaehnle commented Nov 20, 2025

(no review expected)

Base automatically changed from users/nhaehnle/spr/main/eb3ee40e to main November 20, 2025 03:51
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github-actions bot commented Nov 20, 2025

🐧 Linux x64 Test Results

  • 186265 tests passed
  • 4848 tests skipped

@nhaehnle nhaehnle merged commit 07e8932 into main Nov 20, 2025
13 checks passed
@nhaehnle nhaehnle deleted the users/nhaehnle/spr/main/bde3e2a7 branch November 20, 2025 14:58
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llvm-ci commented Nov 20, 2025

LLVM Buildbot has detected a new failure on builder ppc64le-mlir-rhel-clang running on ppc64le-mlir-rhel-test while building llvm at step 3 "clean-build-dir".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/129/builds/33586

Here is the relevant piece of the build log for the reference 
Step 3 (clean-build-dir) failure: Delete failed. (failure) (timed out)
Step 4 (cmake-configure) failure: cmake (failure) (timed out)
command timed out: 1200 seconds without output running [b'cmake', b'-DLLVM_TARGETS_TO_BUILD=PowerPC', b'-DLLVM_INSTALL_UTILS=ON', b'-DCMAKE_CXX_STANDARD=17', b'-DLLVM_ENABLE_PROJECTS=mlir', b'-DLLVM_LIT_ARGS=-vj 256', b'-DCMAKE_C_COMPILER_LAUNCHER=ccache', b'-DCMAKE_CXX_COMPILER_LAUNCHER=ccache', b'-DCMAKE_BUILD_TYPE=Release', b'-DLLVM_ENABLE_ASSERTIONS=ON', b'-GNinja', b'../llvm-project/llvm'], attempting to kill
process killed by signal 9
program finished with exit code -1
elapsedTime=1200.604443

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backend:AMDGPU llvm:analysis Includes value tracking, cost tables and constant folding

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