DirectXShaderCompiler/test/Transforms/GVN/pre-gep-load.ll

; RUN: opt < %s -basicaa -gvn -enable-load-pre -S | FileCheck %s
target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
target triple = "aarch64--linux-gnu"

define double @foo(i32 %stat, i32 %i, double** %p) {
; CHECK-LABEL: @foo(
entry:
  switch i32 %stat, label %sw.default [
    i32 0, label %sw.bb
    i32 1, label %sw.bb
    i32 2, label %sw.bb2
  ]

sw.bb:                                            ; preds = %entry, %entry
  %idxprom = sext i32 %i to i64
  %arrayidx = getelementptr inbounds double*, double** %p, i64 0
  %0 = load double*, double** %arrayidx, align 8
  %arrayidx1 = getelementptr inbounds double, double* %0, i64 %idxprom
  %1 = load double, double* %arrayidx1, align 8
  %sub = fsub double %1, 1.000000e+00
  %cmp = fcmp olt double %sub, 0.000000e+00
  br i1 %cmp, label %if.then, label %if.end

if.then:                                          ; preds = %sw.bb
  br label %return

if.end:                                           ; preds = %sw.bb
  br label %sw.bb2

sw.bb2:                                           ; preds = %if.end, %entry
  %idxprom3 = sext i32 %i to i64
  %arrayidx4 = getelementptr inbounds double*, double** %p, i64 0
  %2 = load double*, double** %arrayidx4, align 8
  %arrayidx5 = getelementptr inbounds double, double* %2, i64 %idxprom3
  %3 = load double, double* %arrayidx5, align 8
; CHECK: sw.bb2:
; CHECK-NEXT-NOT: sext
; CHECK-NEXT: phi double [
; CHECK-NOT: load
  %sub6 = fsub double 3.000000e+00, %3
  br label %return

sw.default:                                       ; preds = %entry
  br label %return

return:                                           ; preds = %sw.default, %sw.bb2, %if.then
  %retval.0 = phi double [ 0.000000e+00, %sw.default ], [ %sub6, %sw.bb2 ], [ %sub, %if.then ]
  ret double %retval.0
}