llvm/test/Transforms/InstCombine/vscale.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes='instcombine' -S < %s | FileCheck %s
target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"

define i64 @promote_vscale_i32_to_i64() {
; CHECK-LABEL: @promote_vscale_i32_to_i64(
; CHECK-NEXT:    [[VSCALE:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT:    [[EXT:%.*]] = and i64 [[VSCALE]], 4294967295
; CHECK-NEXT:    ret i64 [[EXT]]
;
  %vscale = call i32 @llvm.vscale.i32()
  %ext = zext i32 %vscale to i64
  ret i64 %ext
}

define i64 @pomote_zext_shl_vscale_i32_to_i64() {
; CHECK-LABEL: @pomote_zext_shl_vscale_i32_to_i64(
; CHECK-NEXT:    [[VSCALE:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT:    [[SHL:%.*]] = shl i64 [[VSCALE]], 3
; CHECK-NEXT:    [[EXT:%.*]] = and i64 [[SHL]], 4294967288
; CHECK-NEXT:    ret i64 [[EXT]]
;
  %vscale = call i32 @llvm.vscale.i32()
  %shl = shl i32 %vscale, 3
  %ext = zext i32 %shl to i64
  ret i64 %ext
}

; Same test as @pomote_zext_shl_vscale_i32_to_i64, but with the
; vscale_range attribute so that the 'and' is folded away.
define i64 @free_zext_vscale_shl_i32_to_i64() #0 {
; CHECK-LABEL: @free_zext_vscale_shl_i32_to_i64(
; CHECK-NEXT:    [[VSCALE:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT:    [[SHL:%.*]] = shl nuw nsw i64 [[VSCALE]], 3
; CHECK-NEXT:    ret i64 [[SHL]]
;
  %vscale = call i32 @llvm.vscale.i32()
  %shl = shl i32 %vscale, 3
  %ext = zext i32 %shl to i64
  ret i64 %ext
}

declare i32 @llvm.vscale.i32()

attributes #0 = { vscale_range(1,16) }