llvm/test/Analysis/DependenceAnalysis/PR188098.ll

; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py UTC_ARGS: --version 6
; RUN: opt < %s -disable-output "-passes=print<da>" 2>&1 | FileCheck %s

; if (cond) {
;   for (i = 0; i < 10; i++) {
;     for (j = 0; j < 100; j++) {
;       arg[j] = 0.0;
;     }
;   }
; } else {
;   for (i = 0; i < 10; i++) {
;     for (j = 0; j < 100; j++) {
;       double x = arg[j];
;     }
;   }
; }
;
define void @fun(ptr %arg, i1 %cond) {
; CHECK-LABEL: 'fun'
; CHECK-NEXT:  Src: store double 0.000000e+00, ptr %gep.0, align 8 --> Dst: store double 0.000000e+00, ptr %gep.0, align 8
; CHECK-NEXT:    da analyze - output [* *]!
; CHECK-NEXT:  Src: store double 0.000000e+00, ptr %gep.0, align 8 --> Dst: %i16 = load double, ptr %gep.1, align 8
; CHECK-NEXT:    da analyze - flow [|<]!
; CHECK-NEXT:  Src: %i16 = load double, ptr %gep.1, align 8 --> Dst: %i16 = load double, ptr %gep.1, align 8
; CHECK-NEXT:    da analyze - input [* *]!
;
entry:
  br i1 %cond, label %outer.0.header, label %outer.1.header

outer.0.header:
  %i.0 = phi i64 [ %i.0.inc, %outer.0.latch ], [ 0, %entry ]
  br label %inner.0

inner.0:
  %j.0 = phi i64 [ %i.0, %outer.0.header ], [ %j.0.inc, %inner.0 ]
  %j.0.inc = add i64 %j.0, 1
  %gep.0 = getelementptr inbounds double, ptr %arg, i64 %j.0.inc
  store double 0.000000e+00, ptr %gep.0
  %ec.inner.0 = icmp eq i64 %j.0, 100
  br i1 %ec.inner.0, label %outer.0.latch, label %inner.0

outer.0.latch:
  %i.0.inc = add i64 %i.0, 1
  %ec.outer.0 = icmp eq i64 %i.0.inc, 10
  br i1 %ec.outer.0, label %exit, label %outer.0.header

outer.1.header:
  %i.1 = phi i64 [ %i.1.inc, %outer.1.latch ], [ 0, %entry ]
  br label %inner.1

inner.1:
  %j.1 = phi i64 [ %i.1, %outer.1.header ], [ %j.1.inc, %inner.1 ]
  %j.1.inc = add i64 %j.1, 1
  %gep.1 = getelementptr inbounds double, ptr %arg, i64 %j.1.inc
  %i16 = load double, ptr %gep.1
  %ec.inner.1 = icmp eq i64 %j.1, 100
  br i1 %ec.inner.1, label %outer.1.latch, label %inner.1

outer.1.latch:
  %i.1.inc = add i64 %i.1, 1
  %iec.outer.1 = icmp eq i64 %i.1.inc, 10
  br i1 %iec.outer.1, label %exit, label %outer.1.header

exit:
  ret void
}