eabf11f9ea
This patch fixes a crash when despeculating ctlz/cttz intrinsics with scalable-vector types. It is not safe to speculatively get the size of the vector type in bits in case the vector type is not a fixed-length type. As it happens this isn't required as vector types are skipped anyway. Reviewed By: RKSimon Differential Revision: https://reviews.llvm.org/D112141
29 lines
1.1 KiB
LLVM
29 lines
1.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -codegenprepare < %s | FileCheck %s
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target triple = "riscv64-unknown-unknown"
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; Check that despeculating count-zeros intrinsics doesn't crash when those
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; intrinsics use scalable types.
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define <vscale x 4 x i64> @cttz_nxv4i64(<vscale x 4 x i64> %x) {
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; CHECK-LABEL: @cttz_nxv4i64(
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; CHECK-NEXT: [[Z:%.*]] = call <vscale x 4 x i64> @llvm.cttz.nxv4i64(<vscale x 4 x i64> [[X:%.*]], i1 false)
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; CHECK-NEXT: ret <vscale x 4 x i64> [[Z]]
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;
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%z = call <vscale x 4 x i64> @llvm.cttz.nxv4i64(<vscale x 4 x i64> %x, i1 false)
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ret <vscale x 4 x i64> %z
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}
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define <vscale x 4 x i64> @ctlz_nxv4i64(<vscale x 4 x i64> %x) {
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; CHECK-LABEL: @ctlz_nxv4i64(
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; CHECK-NEXT: [[Z:%.*]] = call <vscale x 4 x i64> @llvm.ctlz.nxv4i64(<vscale x 4 x i64> [[X:%.*]], i1 false)
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; CHECK-NEXT: ret <vscale x 4 x i64> [[Z]]
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;
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%z = call <vscale x 4 x i64> @llvm.ctlz.nxv4i64(<vscale x 4 x i64> %x, i1 false)
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ret <vscale x 4 x i64> %z
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}
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declare <vscale x 4 x i64> @llvm.cttz.nxv4i64(<vscale x 4 x i64>, i1)
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declare <vscale x 4 x i64> @llvm.ctlz.nxv4i64(<vscale x 4 x i64>, i1)
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