33fc322696
This addresses a TODO where we can fold a vselect to it's true operand if the boolean is known to be all trues, by factoring out the logic from extractBooleanFlip which checks TLI.getBooleanContents.
20 lines
927 B
LLVM
20 lines
927 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
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; RUN: llc < %s -mtriple=riscv64 -mattr=+v -verify-machineinstrs | FileCheck %s
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define <vscale x 1 x i64> @all_ones(<vscale x 1 x i64> %true, <vscale x 1 x i64> %false, i32 %evl) {
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; CHECK-LABEL: all_ones:
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; CHECK: # %bb.0:
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; CHECK-NEXT: ret
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%v = call <vscale x 1 x i64> @llvm.vp.select.nxv1i64(<vscale x 1 x i1> splat (i1 true), <vscale x 1 x i64> %true, <vscale x 1 x i64> %false, i32 %evl)
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ret <vscale x 1 x i64> %v
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}
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define <vscale x 1 x i64> @all_zeroes(<vscale x 1 x i64> %true, <vscale x 1 x i64> %false, i32 %evl) {
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; CHECK-LABEL: all_zeroes:
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; CHECK: # %bb.0:
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; CHECK-NEXT: vmv1r.v v8, v9
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; CHECK-NEXT: ret
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%v = call <vscale x 1 x i64> @llvm.vp.select.nxv1i64(<vscale x 1 x i1> splat (i1 false), <vscale x 1 x i64> %true, <vscale x 1 x i64> %false, i32 %evl)
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ret <vscale x 1 x i64> %v
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}
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