; RUN: opt < %s -indvars -S | FileCheck %s
; Indvars should be able to eliminate all of the sign extensions
; inside the loop.
target 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"
@pow_2_tab = external constant [0 x float] ; <[0 x float]*> [#uses=1]
@pow_2_025_tab = external constant [0 x float] ; <[0 x float]*> [#uses=1]
@i_pow_2_tab = external constant [0 x float] ; <[0 x float]*> [#uses=1]
@i_pow_2_025_tab = external constant [0 x float] ; <[0 x float]*> [#uses=1]
define void @foo(i32 %gain, i32 %noOfLines, i32* %quaSpectrum, float* %iquaSpectrum, float* %pow4_3_tab_ptr) nounwind {
; CHECK-LABEL: @foo(
; CHECK: sext
; CHECK-NOT: sext
entry:
%t0 = icmp slt i32 %gain, 0 ; <i1> [#uses=1]
br i1 %t0, label %bb1, label %bb2
bb1: ; preds = %entry
%t1 = sub i32 0, %gain ; <i32> [#uses=1]
%t2 = sub i32 0, %gain ; <i32> [#uses=1]
br label %bb2
bb2: ; preds = %bb1, %entry
%pow_2_tab.pn = phi [0 x float]* [ @i_pow_2_tab, %bb1 ], [ @pow_2_tab, %entry ] ; <[0 x float]*> [#uses=1]
%.pn3.in.in = phi i32 [ %t1, %bb1 ], [ %gain, %entry ] ; <i32> [#uses=1]
%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]
%.pn2.in.in = phi i32 [ %t2, %bb1 ], [ %gain, %entry ] ; <i32> [#uses=1]
%.pn3.in = ashr i32 %.pn3.in.in, 2 ; <i32> [#uses=1]
%.pn2.in = and i32 %.pn2.in.in, 3 ; <i32> [#uses=1]
%.pn3 = sext i32 %.pn3.in to i64 ; <i64> [#uses=1]
%.pn2 = zext i32 %.pn2.in to i64 ; <i64> [#uses=1]
%.pn.in = getelementptr [0 x float], [0 x float]* %pow_2_tab.pn, i64 0, i64 %.pn3 ; <float*> [#uses=1]
%.pn1.in = getelementptr [0 x float], [0 x float]* %pow_2_025_tab.pn, i64 0, i64 %.pn2 ; <float*> [#uses=1]
%.pn = load float, float* %.pn.in ; <float> [#uses=1]
%.pn1 = load float, float* %.pn1.in ; <float> [#uses=1]
%invQuantizer.0 = fmul float %.pn, %.pn1 ; <float> [#uses=4]
%t3 = ashr i32 %noOfLines, 2 ; <i32> [#uses=1]
%t4 = icmp sgt i32 %t3, 0 ; <i1> [#uses=1]
br i1 %t4, label %bb.nph, label %return
bb.nph: ; preds = %bb2
%t5 = ashr i32 %noOfLines, 2 ; <i32> [#uses=1]
br label %bb3
bb3: ; preds = %bb4, %bb.nph
%i.05 = phi i32 [ %t49, %bb4 ], [ 0, %bb.nph ] ; <i32> [#uses=9]
%k.04 = phi i32 [ %t48, %bb4 ], [ 0, %bb.nph ] ; <i32> [#uses=1]
%t6 = sext i32 %i.05 to i64 ; <i64> [#uses=1]
%t7 = getelementptr i32, i32* %quaSpectrum, i64 %t6 ; <i32*> [#uses=1]
%t8 = load i32, i32* %t7, align 4 ; <i32> [#uses=1]
%t9 = zext i32 %t8 to i64 ; <i64> [#uses=1]
%t10 = getelementptr float, float* %pow4_3_tab_ptr, i64 %t9 ; <float*> [#uses=1]
%t11 = load float, float* %t10, align 4 ; <float> [#uses=1]
%t12 = or i32 %i.05, 1 ; <i32> [#uses=1]
%t13 = sext i32 %t12 to i64 ; <i64> [#uses=1]
%t14 = getelementptr i32, i32* %quaSpectrum, i64 %t13 ; <i32*> [#uses=1]
%t15 = load i32, i32* %t14, align 4 ; <i32> [#uses=1]
%t16 = zext i32 %t15 to i64 ; <i64> [#uses=1]
%t17 = getelementptr float, float* %pow4_3_tab_ptr, i64 %t16 ; <float*> [#uses=1]
%t18 = load float, float* %t17, align 4 ; <float> [#uses=1]
%t19 = or i32 %i.05, 2 ; <i32> [#uses=1]
%t20 = sext i32 %t19 to i64 ; <i64> [#uses=1]
%t21 = getelementptr i32, i32* %quaSpectrum, i64 %t20 ; <i32*> [#uses=1]
%t22 = load i32, i32* %t21, align 4 ; <i32> [#uses=1]
%t23 = zext i32 %t22 to i64 ; <i64> [#uses=1]
%t24 = getelementptr float, float* %pow4_3_tab_ptr, i64 %t23 ; <float*> [#uses=1]
%t25 = load float, float* %t24, align 4 ; <float> [#uses=1]
%t26 = or i32 %i.05, 3 ; <i32> [#uses=1]
%t27 = sext i32 %t26 to i64 ; <i64> [#uses=1]
%t28 = getelementptr i32, i32* %quaSpectrum, i64 %t27 ; <i32*> [#uses=1]
%t29 = load i32, i32* %t28, align 4 ; <i32> [#uses=1]
%t30 = zext i32 %t29 to i64 ; <i64> [#uses=1]
%t31 = getelementptr float, float* %pow4_3_tab_ptr, i64 %t30 ; <float*> [#uses=1]
%t32 = load float, float* %t31, align 4 ; <float> [#uses=1]
%t33 = fmul float %t11, %invQuantizer.0 ; <float> [#uses=1]
%t34 = sext i32 %i.05 to i64 ; <i64> [#uses=1]
%t35 = getelementptr float, float* %iquaSpectrum, i64 %t34 ; <float*> [#uses=1]
store float %t33, float* %t35, align 4
%t36 = or i32 %i.05, 1 ; <i32> [#uses=1]
%t37 = fmul float %t18, %invQuantizer.0 ; <float> [#uses=1]
%t38 = sext i32 %t36 to i64 ; <i64> [#uses=1]
%t39 = getelementptr float, float* %iquaSpectrum, i64 %t38 ; <float*> [#uses=1]
store float %t37, float* %t39, align 4
%t40 = or i32 %i.05, 2 ; <i32> [#uses=1]
%t41 = fmul float %t25, %invQuantizer.0 ; <float> [#uses=1]
%t42 = sext i32 %t40 to i64 ; <i64> [#uses=1]
%t43 = getelementptr float, float* %iquaSpectrum, i64 %t42 ; <float*> [#uses=1]
store float %t41, float* %t43, align 4
%t44 = or i32 %i.05, 3 ; <i32> [#uses=1]
%t45 = fmul float %t32, %invQuantizer.0 ; <float> [#uses=1]
%t46 = sext i32 %t44 to i64 ; <i64> [#uses=1]
%t47 = getelementptr float, float* %iquaSpectrum, i64 %t46 ; <float*> [#uses=1]
store float %t45, float* %t47, align 4
%t48 = add i32 %k.04, 1 ; <i32> [#uses=2]
%t49 = add i32 %i.05, 4 ; <i32> [#uses=1]
br label %bb4
bb4: ; preds = %bb3
%t50 = icmp sgt i32 %t5, %t48 ; <i1> [#uses=1]
br i1 %t50, label %bb3, label %bb4.return_crit_edge
bb4.return_crit_edge: ; preds = %bb4
br label %return
return: ; preds = %bb4.return_crit_edge, %bb2
ret void
}