mirror of
https://github.com/RPCS3/llvm.git
synced 2024-12-28 15:33:16 +00:00
453a844128
for (i=A; i<N; i++) {
if (i < X && i > Y)
do_something();
}
is transformed into
U=min(N,X); L=max(A,Y);
for (i=L;i<U;i++)
do_somethihg();
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42299 91177308-0d34-0410-b5e6-96231b3b80d8
58 lines
2.5 KiB
LLVM
58 lines
2.5 KiB
LLVM
|
|
; Update loop iteraton space to eliminate condition inside loop.
|
|
; RUN: llvm-as < %s | opt -loop-index-split | llvm-dis | not grep bothcond
|
|
define void @test(float* %x, i32 %ndat, float** %y, float %xcen, i32 %xmin, i32 %xmax, float %sigmal, float %contribution) {
|
|
entry:
|
|
%tmp519 = icmp sgt i32 %xmin, %xmax ; <i1> [#uses=1]
|
|
br i1 %tmp519, label %return, label %bb.preheader
|
|
|
|
bb.preheader: ; preds = %entry
|
|
%tmp3031 = fpext float %contribution to double ; <double> [#uses=1]
|
|
%tmp32 = mul double %tmp3031, 5.000000e-01 ; <double> [#uses=1]
|
|
%tmp3839 = fpext float %sigmal to double ; <double> [#uses=1]
|
|
br label %bb
|
|
|
|
bb: ; preds = %bb.preheader, %cond_next45
|
|
%i.01.0 = phi i32 [ %tmp47, %cond_next45 ], [ %xmin, %bb.preheader ] ; <i32> [#uses=6]
|
|
%tmp2 = icmp sgt i32 %i.01.0, -1 ; <i1> [#uses=1]
|
|
%tmp6 = icmp slt i32 %i.01.0, %ndat ; <i1> [#uses=1]
|
|
%bothcond = and i1 %tmp2, %tmp6 ; <i1> [#uses=1]
|
|
br i1 %bothcond, label %cond_true9, label %cond_next45
|
|
|
|
cond_true9: ; preds = %bb
|
|
%tmp12 = getelementptr float* %x, i32 %i.01.0 ; <float*> [#uses=1]
|
|
%tmp13 = load float* %tmp12, align 4 ; <float> [#uses=1]
|
|
%tmp15 = sub float %xcen, %tmp13 ; <float> [#uses=1]
|
|
%tmp16 = tail call float @fabsf( float %tmp15 ) ; <float> [#uses=1]
|
|
%tmp18 = fdiv float %tmp16, %sigmal ; <float> [#uses=1]
|
|
%tmp21 = load float** %y, align 4 ; <float*> [#uses=2]
|
|
%tmp27 = getelementptr float* %tmp21, i32 %i.01.0 ; <float*> [#uses=1]
|
|
%tmp28 = load float* %tmp27, align 4 ; <float> [#uses=1]
|
|
%tmp2829 = fpext float %tmp28 to double ; <double> [#uses=1]
|
|
%tmp34 = sub float -0.000000e+00, %tmp18 ; <float> [#uses=1]
|
|
%tmp3435 = fpext float %tmp34 to double ; <double> [#uses=1]
|
|
%tmp36 = tail call double @exp( double %tmp3435 ) ; <double> [#uses=1]
|
|
%tmp37 = mul double %tmp32, %tmp36 ; <double> [#uses=1]
|
|
%tmp40 = fdiv double %tmp37, %tmp3839 ; <double> [#uses=1]
|
|
%tmp41 = add double %tmp2829, %tmp40 ; <double> [#uses=1]
|
|
%tmp4142 = fptrunc double %tmp41 to float ; <float> [#uses=1]
|
|
%tmp44 = getelementptr float* %tmp21, i32 %i.01.0 ; <float*> [#uses=1]
|
|
store float %tmp4142, float* %tmp44, align 4
|
|
br label %cond_next45
|
|
|
|
cond_next45: ; preds = %bb, %cond_true9
|
|
%tmp47 = add i32 %i.01.0, 1 ; <i32> [#uses=2]
|
|
%tmp51 = icmp sgt i32 %tmp47, %xmax ; <i1> [#uses=1]
|
|
br i1 %tmp51, label %return.loopexit, label %bb
|
|
|
|
return.loopexit: ; preds = %cond_next45
|
|
br label %return
|
|
|
|
return: ; preds = %return.loopexit, %entry
|
|
ret void
|
|
}
|
|
|
|
declare float @fabsf(float)
|
|
|
|
declare double @exp(double)
|