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90b172efa0
getArithmeticInstrCost(), getShuffleCost(), getCastInstrCost(), getCmpSelInstrCost(), getVectorInstrCost(), getMemoryOpCost(), getInterleavedMemoryOpCost() implemented. Interleaved access vectorization enabled. BasicTTIImpl::getCastInstrCost() improved to check for legal extending loads, in which case the cost of the z/sext instruction becomes 0. Review: Ulrich Weigand, Renato Golin. https://reviews.llvm.org/D29631 llvm-svn: 300052
57 lines
2.4 KiB
LLVM
57 lines
2.4 KiB
LLVM
; RUN: opt < %s -cost-model -analyze -mtriple=systemz-unknown -mcpu=z13 | FileCheck %s
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;
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; Test that an extension of a load does not get an additional cost in cases
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; where the load performs the extension.
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define void @sext() {
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%li8 = load i8, i8* undef
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sext i8 %li8 to i16
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sext i8 %li8 to i32
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sext i8 %li8 to i64
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%li16 = load i16, i16* undef
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sext i16 %li16 to i32
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sext i16 %li16 to i64
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%li32 = load i32, i32* undef
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sext i32 %li32 to i64
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ret void
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; CHECK: Cost Model: Found an estimated cost of 1 for instruction: %li8 = load i8, i8* undef
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; CHECK: Cost Model: Found an estimated cost of 0 for instruction: %1 = sext i8 %li8 to i16
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; CHECK: Cost Model: Found an estimated cost of 0 for instruction: %2 = sext i8 %li8 to i32
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; CHECK: Cost Model: Found an estimated cost of 0 for instruction: %3 = sext i8 %li8 to i64
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; CHECK: Cost Model: Found an estimated cost of 1 for instruction: %li16 = load i16, i16* undef
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; CHECK: Cost Model: Found an estimated cost of 0 for instruction: %4 = sext i16 %li16 to i32
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; CHECK: Cost Model: Found an estimated cost of 0 for instruction: %5 = sext i16 %li16 to i64
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; CHECK: Cost Model: Found an estimated cost of 1 for instruction: %li32 = load i32, i32* undef
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; CHECK: Cost Model: Found an estimated cost of 0 for instruction: %6 = sext i32 %li32 to i64
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}
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define void @zext() {
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%li8 = load i8, i8* undef
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zext i8 %li8 to i16
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zext i8 %li8 to i32
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zext i8 %li8 to i64
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%li16 = load i16, i16* undef
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zext i16 %li16 to i32
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zext i16 %li16 to i64
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%li32 = load i32, i32* undef
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zext i32 %li32 to i64
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ret void
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; CHECK: Cost Model: Found an estimated cost of 1 for instruction: %li8 = load i8, i8* undef
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; CHECK: Cost Model: Found an estimated cost of 0 for instruction: %1 = zext i8 %li8 to i16
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; CHECK: Cost Model: Found an estimated cost of 0 for instruction: %2 = zext i8 %li8 to i32
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; CHECK: Cost Model: Found an estimated cost of 0 for instruction: %3 = zext i8 %li8 to i64
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; CHECK: Cost Model: Found an estimated cost of 1 for instruction: %li16 = load i16, i16* undef
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; CHECK: Cost Model: Found an estimated cost of 0 for instruction: %4 = zext i16 %li16 to i32
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; CHECK: Cost Model: Found an estimated cost of 0 for instruction: %5 = zext i16 %li16 to i64
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; CHECK: Cost Model: Found an estimated cost of 1 for instruction: %li32 = load i32, i32* undef
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; CHECK: Cost Model: Found an estimated cost of 0 for instruction: %6 = zext i32 %li32 to i64
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}
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