1; RUN: opt < %s -indvars -S > %t 2; RUN: grep sext %t | count 1 3 4; Indvars should be able to eliminate all of the sign extensions 5; inside the loop. 6 7target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n32:64" 8@pow_2_tab = external constant [0 x float] ; <[0 x float]*> [#uses=1] 9@pow_2_025_tab = external constant [0 x float] ; <[0 x float]*> [#uses=1] 10@i_pow_2_tab = external constant [0 x float] ; <[0 x float]*> [#uses=1] 11@i_pow_2_025_tab = external constant [0 x float] ; <[0 x float]*> [#uses=1] 12 13define void @foo(i32 %gain, i32 %noOfLines, i32* %quaSpectrum, float* %iquaSpectrum, float* %pow4_3_tab_ptr) nounwind { 14entry: 15 %t0 = icmp slt i32 %gain, 0 ; <i1> [#uses=1] 16 br i1 %t0, label %bb1, label %bb2 17 18bb1: ; preds = %entry 19 %t1 = sub i32 0, %gain ; <i32> [#uses=1] 20 %t2 = sub i32 0, %gain ; <i32> [#uses=1] 21 br label %bb2 22 23bb2: ; preds = %bb1, %entry 24 %pow_2_tab.pn = phi [0 x float]* [ @i_pow_2_tab, %bb1 ], [ @pow_2_tab, %entry ] ; <[0 x float]*> [#uses=1] 25 %.pn3.in.in = phi i32 [ %t1, %bb1 ], [ %gain, %entry ] ; <i32> [#uses=1] 26 %pow_2_025_tab.pn = phi [0 x float]* [ @i_pow_2_025_tab, %bb1 ], [ @pow_2_025_tab, %entry ] ; <[0 x float]*> [#uses=1] 27 %.pn2.in.in = phi i32 [ %t2, %bb1 ], [ %gain, %entry ] ; <i32> [#uses=1] 28 %.pn3.in = ashr i32 %.pn3.in.in, 2 ; <i32> [#uses=1] 29 %.pn2.in = and i32 %.pn2.in.in, 3 ; <i32> [#uses=1] 30 %.pn3 = sext i32 %.pn3.in to i64 ; <i64> [#uses=1] 31 %.pn2 = zext i32 %.pn2.in to i64 ; <i64> [#uses=1] 32 %.pn.in = getelementptr [0 x float]* %pow_2_tab.pn, i64 0, i64 %.pn3 ; <float*> [#uses=1] 33 %.pn1.in = getelementptr [0 x float]* %pow_2_025_tab.pn, i64 0, i64 %.pn2 ; <float*> [#uses=1] 34 %.pn = load float* %.pn.in ; <float> [#uses=1] 35 %.pn1 = load float* %.pn1.in ; <float> [#uses=1] 36 %invQuantizer.0 = fmul float %.pn, %.pn1 ; <float> [#uses=4] 37 %t3 = ashr i32 %noOfLines, 2 ; <i32> [#uses=1] 38 %t4 = icmp sgt i32 %t3, 0 ; <i1> [#uses=1] 39 br i1 %t4, label %bb.nph, label %return 40 41bb.nph: ; preds = %bb2 42 %t5 = ashr i32 %noOfLines, 2 ; <i32> [#uses=1] 43 br label %bb3 44 45bb3: ; preds = %bb4, %bb.nph 46 %i.05 = phi i32 [ %t49, %bb4 ], [ 0, %bb.nph ] ; <i32> [#uses=9] 47 %k.04 = phi i32 [ %t48, %bb4 ], [ 0, %bb.nph ] ; <i32> [#uses=1] 48 %t6 = sext i32 %i.05 to i64 ; <i64> [#uses=1] 49 %t7 = getelementptr i32* %quaSpectrum, i64 %t6 ; <i32*> [#uses=1] 50 %t8 = load i32* %t7, align 4 ; <i32> [#uses=1] 51 %t9 = zext i32 %t8 to i64 ; <i64> [#uses=1] 52 %t10 = getelementptr float* %pow4_3_tab_ptr, i64 %t9 ; <float*> [#uses=1] 53 %t11 = load float* %t10, align 4 ; <float> [#uses=1] 54 %t12 = or i32 %i.05, 1 ; <i32> [#uses=1] 55 %t13 = sext i32 %t12 to i64 ; <i64> [#uses=1] 56 %t14 = getelementptr i32* %quaSpectrum, i64 %t13 ; <i32*> [#uses=1] 57 %t15 = load i32* %t14, align 4 ; <i32> [#uses=1] 58 %t16 = zext i32 %t15 to i64 ; <i64> [#uses=1] 59 %t17 = getelementptr float* %pow4_3_tab_ptr, i64 %t16 ; <float*> [#uses=1] 60 %t18 = load float* %t17, align 4 ; <float> [#uses=1] 61 %t19 = or i32 %i.05, 2 ; <i32> [#uses=1] 62 %t20 = sext i32 %t19 to i64 ; <i64> [#uses=1] 63 %t21 = getelementptr i32* %quaSpectrum, i64 %t20 ; <i32*> [#uses=1] 64 %t22 = load i32* %t21, align 4 ; <i32> [#uses=1] 65 %t23 = zext i32 %t22 to i64 ; <i64> [#uses=1] 66 %t24 = getelementptr float* %pow4_3_tab_ptr, i64 %t23 ; <float*> [#uses=1] 67 %t25 = load float* %t24, align 4 ; <float> [#uses=1] 68 %t26 = or i32 %i.05, 3 ; <i32> [#uses=1] 69 %t27 = sext i32 %t26 to i64 ; <i64> [#uses=1] 70 %t28 = getelementptr i32* %quaSpectrum, i64 %t27 ; <i32*> [#uses=1] 71 %t29 = load i32* %t28, align 4 ; <i32> [#uses=1] 72 %t30 = zext i32 %t29 to i64 ; <i64> [#uses=1] 73 %t31 = getelementptr float* %pow4_3_tab_ptr, i64 %t30 ; <float*> [#uses=1] 74 %t32 = load float* %t31, align 4 ; <float> [#uses=1] 75 %t33 = fmul float %t11, %invQuantizer.0 ; <float> [#uses=1] 76 %t34 = sext i32 %i.05 to i64 ; <i64> [#uses=1] 77 %t35 = getelementptr float* %iquaSpectrum, i64 %t34 ; <float*> [#uses=1] 78 store float %t33, float* %t35, align 4 79 %t36 = or i32 %i.05, 1 ; <i32> [#uses=1] 80 %t37 = fmul float %t18, %invQuantizer.0 ; <float> [#uses=1] 81 %t38 = sext i32 %t36 to i64 ; <i64> [#uses=1] 82 %t39 = getelementptr float* %iquaSpectrum, i64 %t38 ; <float*> [#uses=1] 83 store float %t37, float* %t39, align 4 84 %t40 = or i32 %i.05, 2 ; <i32> [#uses=1] 85 %t41 = fmul float %t25, %invQuantizer.0 ; <float> [#uses=1] 86 %t42 = sext i32 %t40 to i64 ; <i64> [#uses=1] 87 %t43 = getelementptr float* %iquaSpectrum, i64 %t42 ; <float*> [#uses=1] 88 store float %t41, float* %t43, align 4 89 %t44 = or i32 %i.05, 3 ; <i32> [#uses=1] 90 %t45 = fmul float %t32, %invQuantizer.0 ; <float> [#uses=1] 91 %t46 = sext i32 %t44 to i64 ; <i64> [#uses=1] 92 %t47 = getelementptr float* %iquaSpectrum, i64 %t46 ; <float*> [#uses=1] 93 store float %t45, float* %t47, align 4 94 %t48 = add i32 %k.04, 1 ; <i32> [#uses=2] 95 %t49 = add i32 %i.05, 4 ; <i32> [#uses=1] 96 br label %bb4 97 98bb4: ; preds = %bb3 99 %t50 = icmp sgt i32 %t5, %t48 ; <i1> [#uses=1] 100 br i1 %t50, label %bb3, label %bb4.return_crit_edge 101 102bb4.return_crit_edge: ; preds = %bb4 103 br label %return 104 105return: ; preds = %bb4.return_crit_edge, %bb2 106 ret void 107} 108