llvm-for-llvmta/test/Transforms/IndVarSimplify/2006-03-31-NegativeStride.ll

24 lines
765 B
LLVM

; PR726
; RUN: opt < %s -indvars -S | FileCheck %s
; Make sure to compute the right exit value based on negative strides.
define i32 @test() {
; CHECK-LABEL: @test(
; CHECK: ret i32 27
entry:
br label %cond_true
cond_true: ; preds = %cond_true, %entry
%a.0.0 = phi i32 [ 10, %entry ], [ %tmp4, %cond_true ] ; <i32> [#uses=2]
%b.0.0 = phi i32 [ 0, %entry ], [ %tmp2, %cond_true ] ; <i32> [#uses=1]
%tmp2 = add i32 %b.0.0, %a.0.0 ; <i32> [#uses=2]
%tmp4 = add i32 %a.0.0, -1 ; <i32> [#uses=2]
%tmp = icmp sgt i32 %tmp4, 7 ; <i1> [#uses=1]
br i1 %tmp, label %cond_true, label %bb7
bb7: ; preds = %cond_true
ret i32 %tmp2
}