[CostModel][AArch64] Model cost of extract.last.active intrinsic (clastb) #165739
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llvmbot
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backend:AArch64
llvm:analysis
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@llvm/pr-subscribers-llvm-analysis @llvm/pr-subscribers-backend-aarch64 Author: Graham Hunter (huntergr-arm) ChangesAdds some aarch64 cost model tests for extract.last.active, and produces a lower cost when SVE is available (expecting clastb to be generated). I think the NEON costs are higher than they should be, but that can be improved separately if needed. Patch is 42.05 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/165739.diff 2 Files Affected:
diff --git a/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp b/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
index fede586cf35bc..47c1ac4b22224 100644
--- a/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
+++ b/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
@@ -1032,6 +1032,13 @@ AArch64TTIImpl::getIntrinsicInstrCost(const IntrinsicCostAttributes &ICA,
}
break;
}
+ case Intrinsic::experimental_vector_extract_last_active:
+ if (ST->isSVEorStreamingSVEAvailable()) {
+ auto [LegalCost, _] = getTypeLegalizationCost(ICA.getArgTypes()[0]);
+ // This should turn into chained clastb instructions.
+ return LegalCost;
+ }
+ break;
default:
break;
}
diff --git a/llvm/test/Analysis/CostModel/AArch64/extract-last-active.ll b/llvm/test/Analysis/CostModel/AArch64/extract-last-active.ll
new file mode 100644
index 0000000000000..c505e61abaec2
--- /dev/null
+++ b/llvm/test/Analysis/CostModel/AArch64/extract-last-active.ll
@@ -0,0 +1,267 @@
+; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py UTC_ARGS: --version 6
+; RUN: opt < %s -passes="print<cost-model>" 2>&1 -disable-output -S -mtriple=aarch64--linux-gnu | FileCheck %s --check-prefix=NEON
+; RUN: opt < %s -passes="print<cost-model>" 2>&1 -disable-output -S -mtriple=aarch64--linux-gnu -mattr=+sve | FileCheck %s --check-prefix=SVE
+; RUN: opt < %s -passes="print<cost-model>" 2>&1 -disable-output -S -mtriple=aarch64--linux-gnu -mattr=+sme -force-streaming | FileCheck %s --check-prefix=SME-STREAMING
+
+define void @extractions() {
+; NEON-LABEL: 'extractions'
+; NEON-NEXT: Cost Model: Found an estimated cost of 80 for instruction: %v16i8 = call i8 @llvm.experimental.vector.extract.last.active.v16i8(<16 x i8> poison, <16 x i1> poison, i8 poison)
+; NEON-NEXT: Cost Model: Found an estimated cost of 40 for instruction: %v8i16 = call i16 @llvm.experimental.vector.extract.last.active.v8i16(<8 x i16> poison, <8 x i1> poison, i16 poison)
+; NEON-NEXT: Cost Model: Found an estimated cost of 20 for instruction: %v4i32 = call i32 @llvm.experimental.vector.extract.last.active.v4i32(<4 x i32> poison, <4 x i1> poison, i32 poison)
+; NEON-NEXT: Cost Model: Found an estimated cost of 10 for instruction: %v2i64 = call i64 @llvm.experimental.vector.extract.last.active.v2i64(<2 x i64> poison, <2 x i1> poison, i64 poison)
+; NEON-NEXT: Cost Model: Found an estimated cost of 38 for instruction: %v8f16 = call half @llvm.experimental.vector.extract.last.active.v8f16(<8 x half> poison, <8 x i1> poison, half poison)
+; NEON-NEXT: Cost Model: Found an estimated cost of 38 for instruction: %v8bf16 = call bfloat @llvm.experimental.vector.extract.last.active.v8bf16(<8 x bfloat> poison, <8 x i1> poison, bfloat poison)
+; NEON-NEXT: Cost Model: Found an estimated cost of 18 for instruction: %v4f32 = call float @llvm.experimental.vector.extract.last.active.v4f32(<4 x float> poison, <4 x i1> poison, float poison)
+; NEON-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %v2f64 = call double @llvm.experimental.vector.extract.last.active.v2f64(<2 x double> poison, <2 x i1> poison, double poison)
+; NEON-NEXT: Cost Model: Invalid cost for instruction: %nxv16i8 = call i8 @llvm.experimental.vector.extract.last.active.nxv16i8(<vscale x 16 x i8> poison, <vscale x 16 x i1> poison, i8 poison)
+; NEON-NEXT: Cost Model: Invalid cost for instruction: %nxv8i16 = call i16 @llvm.experimental.vector.extract.last.active.nxv8i16(<vscale x 8 x i16> poison, <vscale x 8 x i1> poison, i16 poison)
+; NEON-NEXT: Cost Model: Invalid cost for instruction: %nxv4i32 = call i32 @llvm.experimental.vector.extract.last.active.nxv4i32(<vscale x 4 x i32> poison, <vscale x 4 x i1> poison, i32 poison)
+; NEON-NEXT: Cost Model: Invalid cost for instruction: %nxv2i64 = call i64 @llvm.experimental.vector.extract.last.active.nxv2i64(<vscale x 2 x i64> poison, <vscale x 2 x i1> poison, i64 poison)
+; NEON-NEXT: Cost Model: Invalid cost for instruction: %nxv8f16 = call half @llvm.experimental.vector.extract.last.active.nxv8f16(<vscale x 8 x half> poison, <vscale x 8 x i1> poison, half poison)
+; NEON-NEXT: Cost Model: Invalid cost for instruction: %nxv8bf16 = call bfloat @llvm.experimental.vector.extract.last.active.nxv8bf16(<vscale x 8 x bfloat> poison, <vscale x 8 x i1> poison, bfloat poison)
+; NEON-NEXT: Cost Model: Invalid cost for instruction: %nxv4f32 = call float @llvm.experimental.vector.extract.last.active.nxv4f32(<vscale x 4 x float> poison, <vscale x 4 x i1> poison, float poison)
+; NEON-NEXT: Cost Model: Invalid cost for instruction: %nxv2f64 = call double @llvm.experimental.vector.extract.last.active.nxv2f64(<vscale x 2 x double> poison, <vscale x 2 x i1> poison, double poison)
+; NEON-NEXT: Cost Model: Found an estimated cost of 160 for instruction: %v32i8 = call i8 @llvm.experimental.vector.extract.last.active.v32i8(<32 x i8> poison, <32 x i1> poison, i8 poison)
+; NEON-NEXT: Cost Model: Found an estimated cost of 80 for instruction: %v16i16 = call i16 @llvm.experimental.vector.extract.last.active.v16i16(<16 x i16> poison, <16 x i1> poison, i16 poison)
+; NEON-NEXT: Cost Model: Found an estimated cost of 40 for instruction: %v8i32 = call i32 @llvm.experimental.vector.extract.last.active.v8i32(<8 x i32> poison, <8 x i1> poison, i32 poison)
+; NEON-NEXT: Cost Model: Found an estimated cost of 20 for instruction: %v4i64 = call i64 @llvm.experimental.vector.extract.last.active.v4i64(<4 x i64> poison, <4 x i1> poison, i64 poison)
+; NEON-NEXT: Cost Model: Found an estimated cost of 76 for instruction: %v16f16 = call half @llvm.experimental.vector.extract.last.active.v16f16(<16 x half> poison, <16 x i1> poison, half poison)
+; NEON-NEXT: Cost Model: Found an estimated cost of 76 for instruction: %v16bf16 = call bfloat @llvm.experimental.vector.extract.last.active.v16bf16(<16 x bfloat> poison, <16 x i1> poison, bfloat poison)
+; NEON-NEXT: Cost Model: Found an estimated cost of 36 for instruction: %v8f32 = call float @llvm.experimental.vector.extract.last.active.v8f32(<8 x float> poison, <8 x i1> poison, float poison)
+; NEON-NEXT: Cost Model: Found an estimated cost of 16 for instruction: %v4f64 = call double @llvm.experimental.vector.extract.last.active.v4f64(<4 x double> poison, <4 x i1> poison, double poison)
+; NEON-NEXT: Cost Model: Invalid cost for instruction: %nxv32i8 = call i8 @llvm.experimental.vector.extract.last.active.nxv32i8(<vscale x 32 x i8> poison, <vscale x 32 x i1> poison, i8 poison)
+; NEON-NEXT: Cost Model: Invalid cost for instruction: %nxv16i16 = call i16 @llvm.experimental.vector.extract.last.active.nxv16i16(<vscale x 16 x i16> poison, <vscale x 16 x i1> poison, i16 poison)
+; NEON-NEXT: Cost Model: Invalid cost for instruction: %nxv8i32 = call i32 @llvm.experimental.vector.extract.last.active.nxv8i32(<vscale x 8 x i32> poison, <vscale x 8 x i1> poison, i32 poison)
+; NEON-NEXT: Cost Model: Invalid cost for instruction: %nxv4i64 = call i64 @llvm.experimental.vector.extract.last.active.nxv4i64(<vscale x 4 x i64> poison, <vscale x 4 x i1> poison, i64 poison)
+; NEON-NEXT: Cost Model: Invalid cost for instruction: %nxv16f16 = call half @llvm.experimental.vector.extract.last.active.nxv16f16(<vscale x 16 x half> poison, <vscale x 16 x i1> poison, half poison)
+; NEON-NEXT: Cost Model: Invalid cost for instruction: %nxv16bf16 = call bfloat @llvm.experimental.vector.extract.last.active.nxv16bf16(<vscale x 16 x bfloat> poison, <vscale x 16 x i1> poison, bfloat poison)
+; NEON-NEXT: Cost Model: Invalid cost for instruction: %nxv8f32 = call float @llvm.experimental.vector.extract.last.active.nxv8f32(<vscale x 8 x float> poison, <vscale x 8 x i1> poison, float poison)
+; NEON-NEXT: Cost Model: Invalid cost for instruction: %nxv4f64 = call double @llvm.experimental.vector.extract.last.active.nxv4f64(<vscale x 4 x double> poison, <vscale x 4 x i1> poison, double poison)
+; NEON-NEXT: Cost Model: Found an estimated cost of 40 for instruction: %v8i8 = call i8 @llvm.experimental.vector.extract.last.active.v8i8(<8 x i8> poison, <8 x i1> poison, i8 poison)
+; NEON-NEXT: Cost Model: Found an estimated cost of 20 for instruction: %v4i16 = call i16 @llvm.experimental.vector.extract.last.active.v4i16(<4 x i16> poison, <4 x i1> poison, i16 poison)
+; NEON-NEXT: Cost Model: Found an estimated cost of 10 for instruction: %v2i32 = call i32 @llvm.experimental.vector.extract.last.active.v2i32(<2 x i32> poison, <2 x i1> poison, i32 poison)
+; NEON-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %v1i64 = call i64 @llvm.experimental.vector.extract.last.active.v1i64(<1 x i64> poison, <1 x i1> poison, i64 poison)
+; NEON-NEXT: Cost Model: Found an estimated cost of 18 for instruction: %v4f16 = call half @llvm.experimental.vector.extract.last.active.v4f16(<4 x half> poison, <4 x i1> poison, half poison)
+; NEON-NEXT: Cost Model: Found an estimated cost of 18 for instruction: %v4bf16 = call bfloat @llvm.experimental.vector.extract.last.active.v4bf16(<4 x bfloat> poison, <4 x i1> poison, bfloat poison)
+; NEON-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %v2f32 = call float @llvm.experimental.vector.extract.last.active.v2f32(<2 x float> poison, <2 x i1> poison, float poison)
+; NEON-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %v1f64 = call double @llvm.experimental.vector.extract.last.active.v1f64(<1 x double> poison, <1 x i1> poison, double poison)
+; NEON-NEXT: Cost Model: Invalid cost for instruction: %nxv8i8 = call i8 @llvm.experimental.vector.extract.last.active.nxv8i8(<vscale x 8 x i8> poison, <vscale x 8 x i1> poison, i8 poison)
+; NEON-NEXT: Cost Model: Invalid cost for instruction: %nxv4i16 = call i16 @llvm.experimental.vector.extract.last.active.nxv4i16(<vscale x 4 x i16> poison, <vscale x 4 x i1> poison, i16 poison)
+; NEON-NEXT: Cost Model: Invalid cost for instruction: %nxv2i32 = call i32 @llvm.experimental.vector.extract.last.active.nxv2i32(<vscale x 2 x i32> poison, <vscale x 2 x i1> poison, i32 poison)
+; NEON-NEXT: Cost Model: Invalid cost for instruction: %nxv1i64 = call i64 @llvm.experimental.vector.extract.last.active.nxv1i64(<vscale x 1 x i64> poison, <vscale x 1 x i1> poison, i64 poison)
+; NEON-NEXT: Cost Model: Invalid cost for instruction: %nxv4f16 = call half @llvm.experimental.vector.extract.last.active.nxv4f16(<vscale x 4 x half> poison, <vscale x 4 x i1> poison, half poison)
+; NEON-NEXT: Cost Model: Invalid cost for instruction: %nxv4bf16 = call bfloat @llvm.experimental.vector.extract.last.active.nxv4bf16(<vscale x 4 x bfloat> poison, <vscale x 4 x i1> poison, bfloat poison)
+; NEON-NEXT: Cost Model: Invalid cost for instruction: %nxv2f32 = call float @llvm.experimental.vector.extract.last.active.nxv2f32(<vscale x 2 x float> poison, <vscale x 2 x i1> poison, float poison)
+; NEON-NEXT: Cost Model: Invalid cost for instruction: %nxv1f64 = call double @llvm.experimental.vector.extract.last.active.nxv1f64(<vscale x 1 x double> poison, <vscale x 1 x i1> poison, double poison)
+; NEON-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret void
+;
+; SVE-LABEL: 'extractions'
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %v16i8 = call i8 @llvm.experimental.vector.extract.last.active.v16i8(<16 x i8> poison, <16 x i1> poison, i8 poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %v8i16 = call i16 @llvm.experimental.vector.extract.last.active.v8i16(<8 x i16> poison, <8 x i1> poison, i16 poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %v4i32 = call i32 @llvm.experimental.vector.extract.last.active.v4i32(<4 x i32> poison, <4 x i1> poison, i32 poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %v2i64 = call i64 @llvm.experimental.vector.extract.last.active.v2i64(<2 x i64> poison, <2 x i1> poison, i64 poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %v8f16 = call half @llvm.experimental.vector.extract.last.active.v8f16(<8 x half> poison, <8 x i1> poison, half poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %v8bf16 = call bfloat @llvm.experimental.vector.extract.last.active.v8bf16(<8 x bfloat> poison, <8 x i1> poison, bfloat poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %v4f32 = call float @llvm.experimental.vector.extract.last.active.v4f32(<4 x float> poison, <4 x i1> poison, float poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %v2f64 = call double @llvm.experimental.vector.extract.last.active.v2f64(<2 x double> poison, <2 x i1> poison, double poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %nxv16i8 = call i8 @llvm.experimental.vector.extract.last.active.nxv16i8(<vscale x 16 x i8> poison, <vscale x 16 x i1> poison, i8 poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %nxv8i16 = call i16 @llvm.experimental.vector.extract.last.active.nxv8i16(<vscale x 8 x i16> poison, <vscale x 8 x i1> poison, i16 poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %nxv4i32 = call i32 @llvm.experimental.vector.extract.last.active.nxv4i32(<vscale x 4 x i32> poison, <vscale x 4 x i1> poison, i32 poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %nxv2i64 = call i64 @llvm.experimental.vector.extract.last.active.nxv2i64(<vscale x 2 x i64> poison, <vscale x 2 x i1> poison, i64 poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %nxv8f16 = call half @llvm.experimental.vector.extract.last.active.nxv8f16(<vscale x 8 x half> poison, <vscale x 8 x i1> poison, half poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %nxv8bf16 = call bfloat @llvm.experimental.vector.extract.last.active.nxv8bf16(<vscale x 8 x bfloat> poison, <vscale x 8 x i1> poison, bfloat poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %nxv4f32 = call float @llvm.experimental.vector.extract.last.active.nxv4f32(<vscale x 4 x float> poison, <vscale x 4 x i1> poison, float poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %nxv2f64 = call double @llvm.experimental.vector.extract.last.active.nxv2f64(<vscale x 2 x double> poison, <vscale x 2 x i1> poison, double poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %v32i8 = call i8 @llvm.experimental.vector.extract.last.active.v32i8(<32 x i8> poison, <32 x i1> poison, i8 poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %v16i16 = call i16 @llvm.experimental.vector.extract.last.active.v16i16(<16 x i16> poison, <16 x i1> poison, i16 poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %v8i32 = call i32 @llvm.experimental.vector.extract.last.active.v8i32(<8 x i32> poison, <8 x i1> poison, i32 poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %v4i64 = call i64 @llvm.experimental.vector.extract.last.active.v4i64(<4 x i64> poison, <4 x i1> poison, i64 poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %v16f16 = call half @llvm.experimental.vector.extract.last.active.v16f16(<16 x half> poison, <16 x i1> poison, half poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %v16bf16 = call bfloat @llvm.experimental.vector.extract.last.active.v16bf16(<16 x bfloat> poison, <16 x i1> poison, bfloat poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %v8f32 = call float @llvm.experimental.vector.extract.last.active.v8f32(<8 x float> poison, <8 x i1> poison, float poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %v4f64 = call double @llvm.experimental.vector.extract.last.active.v4f64(<4 x double> poison, <4 x i1> poison, double poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %nxv32i8 = call i8 @llvm.experimental.vector.extract.last.active.nxv32i8(<vscale x 32 x i8> poison, <vscale x 32 x i1> poison, i8 poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %nxv16i16 = call i16 @llvm.experimental.vector.extract.last.active.nxv16i16(<vscale x 16 x i16> poison, <vscale x 16 x i1> poison, i16 poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %nxv8i32 = call i32 @llvm.experimental.vector.extract.last.active.nxv8i32(<vscale x 8 x i32> poison, <vscale x 8 x i1> poison, i32 poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %nxv4i64 = call i64 @llvm.experimental.vector.extract.last.active.nxv4i64(<vscale x 4 x i64> poison, <vscale x 4 x i1> poison, i64 poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %nxv16f16 = call half @llvm.experimental.vector.extract.last.active.nxv16f16(<vscale x 16 x half> poison, <vscale x 16 x i1> poison, half poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %nxv16bf16 = call bfloat @llvm.experimental.vector.extract.last.active.nxv16bf16(<vscale x 16 x bfloat> poison, <vscale x 16 x i1> poison, bfloat poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %nxv8f32 = call float @llvm.experimental.vector.extract.last.active.nxv8f32(<vscale x 8 x float> poison, <vscale x 8 x i1> poison, float poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %nxv4f64 = call double @llvm.experimental.vector.extract.last.active.nxv4f64(<vscale x 4 x double> poison, <vscale x 4 x i1> poison, double poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %v8i8 = call i8 @llvm.experimental.vector.extract.last.active.v8i8(<8 x i8> poison, <8 x i1> poison, i8 poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %v4i16 = call i16 @llvm.experimental.vector.extract.last.active.v4i16(<4 x i16> poison, <4 x i1> poison, i16 poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %v2i32 = call i32 @llvm.experimental.vector.extract.last.active.v2i32(<2 x i32> poison, <2 x i1> poison, i32 poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %v1i64 = call i64 @llvm.experimental.vector.extract.last.active.v1i64(<1 x i64> poison, <1 x i1> poison, i64 poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %v4f16 = call half @llvm.experimental.vector.extract.last.active.v4f16(<4 x half> poison, <4 x i1> poison, half poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %v4bf16 = call bfloat @llvm.experimental.vector.extract.last.active.v4bf16(<4 x bfloat> poison, <4 x i1> poison, bfloat poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %v2f32 = call float @llvm.experimental.vector.extract.last.active.v2f32(<2 x float> poison, <2 x i1> poison, float poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %v1f64 = call double @llvm.experimental.vector.extract.last.active.v1f64(<1 x double> poison, <1 x i1> poison, double poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %nxv8i8 = call i8 @llvm.experimental.vector.extract.last.active.nxv8i8(<vscale x 8 x i8> poison, <vscale x 8 x i1> poison, i8 poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %nxv4i16 = call i16 @llvm.experimental.vector.extract.last.active.nxv4i16(<vscale x 4 x i16> poison, <vscale x 4 x i1> poison, i16 poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %nxv2i32 = call i32 @llvm.experimental.vector.extract.last.active.nxv2i32(<vscale x 2 x i32> poison, <vscale x 2 x i1> poison, i32 poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %nxv1i64 = call i64 @llvm.experimental.vector.extract.last.active.nxv1i64(<vscale x 1 x i64> poison, <vscale x 1 x i1> poison, i64 poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %nxv4f16 = call half @llvm.experimental.vector.extract.last.active.nxv4f16(<vscale x 4 x half> poison, <vscale x 4 x i1> poison, half poison)
+; SVE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %nxv4bf16 = call bfloat @llvm.experimental.vector.extract.last.active.nxv4...
[truncated]
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ckoparkar
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Oct 31, 2025
* main: [SPIRV] Fix vector bitcast check in LegalizePointerCast (llvm#164997) [lldb][docs] Add troubleshooting section to scripting introduction [Sema] Fix parameter index checks on explicit object member functions (llvm#165586) To fix polymorphic pointer assignment in FORALL when LHS is unlimited polymorphic and RHS is intrinsic type target (llvm#164999) [CostModel][AArch64] Model cost of extract.last.active intrinsic (clastb) (llvm#165739) [MemProf] Select largest of matching contexts from profile (llvm#165338) [lldb][TypeSystem] Better support for _BitInt types (llvm#165689) [NVPTX] Move TMA G2S lowering to Tablegen (llvm#165710) [MLIR][NVVM] Extend NVVM mma ops to support fp64 (llvm#165380) [UTC] Support to test annotated IR (llvm#165419)
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Adds some aarch64 cost model tests for extract.last.active, and produces a lower cost when SVE is available (expecting clastb to be generated).
I think the NEON costs are higher than they should be, but that can be improved separately if needed.