1; RUN: opt < %s -indvars -S | FileCheck %s 2 3; Indvars should insert a 64-bit induction variable to eliminate the 4; sext for the addressing, however it shouldn't eliminate the sext 5; on the other phi, since that value undergoes signed wrapping. 6 7; Provide legal integer types. 8target datalayout = "n8:16:32:64" 9 10 11define void @foo(i32* nocapture %d, i32 %n) nounwind { 12entry: 13 %0 = icmp sgt i32 %n, 0 ; <i1> [#uses=1] 14 br i1 %0, label %bb.nph, label %return 15 16bb.nph: ; preds = %entry 17 br label %bb 18 19; CHECK: bb: 20; CHECK: phi i64 21; CHECK: sext i8 22; CHECK-NOT: sext 23bb: ; preds = %bb1, %bb.nph 24 %i.02 = phi i32 [ %5, %bb1 ], [ 0, %bb.nph ] ; <i32> [#uses=2] 25 %p.01 = phi i8 [ %4, %bb1 ], [ -1, %bb.nph ] ; <i8> [#uses=2] 26 %1 = sext i8 %p.01 to i32 ; <i32> [#uses=1] 27 %2 = sext i32 %i.02 to i64 ; <i64> [#uses=1] 28 %3 = getelementptr i32, i32* %d, i64 %2 ; <i32*> [#uses=1] 29 store i32 %1, i32* %3, align 4 30 %4 = add i8 %p.01, 1 ; <i8> [#uses=1] 31 %5 = add i32 %i.02, 1 ; <i32> [#uses=2] 32 br label %bb1 33 34bb1: ; preds = %bb 35 %6 = icmp slt i32 %5, %n ; <i1> [#uses=1] 36 br i1 %6, label %bb, label %bb1.return_crit_edge 37 38bb1.return_crit_edge: ; preds = %bb1 39 br label %return 40 41return: ; preds = %bb1.return_crit_edge, %entry 42 ret void 43} 44