mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-14 11:32:34 +00:00
453aa4fbf1
sending SCEVUnknowns to expandAddToGEP. This avoids the need for expandAddToGEP to bend the rules and peek into SCEVUnknown expressions. Factor out the code for testing whether a SCEV can be factored by a constant for use in a GEP index. This allows it to handle SCEVAddRecExprs, by recursing. As a result, SCEVExpander can now put more things in GEP indices, so it emits fewer explicit mul instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72366 91177308-0d34-0410-b5e6-96231b3b80d8
79 lines
2.7 KiB
LLVM
79 lines
2.7 KiB
LLVM
; RUN: llvm-as < %s | opt -indvars | llvm-dis > %t
|
|
; RUN: grep getelementptr %t | count 1
|
|
; RUN: grep {mul .*, 37} %t | count 1
|
|
; RUN: grep {add .*, 5203} %t | count 1
|
|
; RUN: not grep cast %t
|
|
|
|
; This test tests several things. The load and store should use the
|
|
; same address instead of having it computed twice, and SCEVExpander should
|
|
; be able to reconstruct the full getelementptr, despite it having a few
|
|
; obstacles set in its way.
|
|
|
|
target datalayout = "e-p:64:64:64"
|
|
|
|
define void @foo(i64 %n, i64 %m, i64 %o, i64 %q, double* nocapture %p) nounwind {
|
|
entry:
|
|
%tmp = icmp sgt i64 %n, 0 ; <i1> [#uses=1]
|
|
br i1 %tmp, label %bb.nph3, label %return
|
|
|
|
bb.nph: ; preds = %bb2.preheader
|
|
%tmp1 = mul i64 %tmp16, %i.02 ; <i64> [#uses=1]
|
|
%tmp2 = mul i64 %tmp19, %i.02 ; <i64> [#uses=1]
|
|
br label %bb1
|
|
|
|
bb1: ; preds = %bb2, %bb.nph
|
|
%j.01 = phi i64 [ %tmp9, %bb2 ], [ 0, %bb.nph ] ; <i64> [#uses=3]
|
|
%tmp3 = add i64 %j.01, %tmp1 ; <i64> [#uses=1]
|
|
%tmp4 = add i64 %j.01, %tmp2 ; <i64> [#uses=1]
|
|
%z0 = add i64 %tmp4, 5203
|
|
%tmp5 = getelementptr double* %p, i64 %z0 ; <double*> [#uses=1]
|
|
%tmp6 = load double* %tmp5, align 8 ; <double> [#uses=1]
|
|
%tmp7 = fdiv double %tmp6, 2.100000e+00 ; <double> [#uses=1]
|
|
%z1 = add i64 %tmp4, 5203
|
|
%tmp8 = getelementptr double* %p, i64 %z1 ; <double*> [#uses=1]
|
|
store double %tmp7, double* %tmp8, align 8
|
|
%tmp9 = add i64 %j.01, 1 ; <i64> [#uses=2]
|
|
br label %bb2
|
|
|
|
bb2: ; preds = %bb1
|
|
%tmp10 = icmp slt i64 %tmp9, %m ; <i1> [#uses=1]
|
|
br i1 %tmp10, label %bb1, label %bb2.bb3_crit_edge
|
|
|
|
bb2.bb3_crit_edge: ; preds = %bb2
|
|
br label %bb3
|
|
|
|
bb3: ; preds = %bb2.preheader, %bb2.bb3_crit_edge
|
|
%tmp11 = add i64 %i.02, 1 ; <i64> [#uses=2]
|
|
br label %bb4
|
|
|
|
bb4: ; preds = %bb3
|
|
%tmp12 = icmp slt i64 %tmp11, %n ; <i1> [#uses=1]
|
|
br i1 %tmp12, label %bb2.preheader, label %bb4.return_crit_edge
|
|
|
|
bb4.return_crit_edge: ; preds = %bb4
|
|
br label %bb4.return_crit_edge.split
|
|
|
|
bb4.return_crit_edge.split: ; preds = %bb.nph3, %bb4.return_crit_edge
|
|
br label %return
|
|
|
|
bb.nph3: ; preds = %entry
|
|
%tmp13 = icmp sgt i64 %m, 0 ; <i1> [#uses=1]
|
|
%tmp14 = mul i64 %n, 37 ; <i64> [#uses=1]
|
|
%tmp15 = mul i64 %tmp14, %o ; <i64> [#uses=1]
|
|
%tmp16 = mul i64 %tmp15, %q ; <i64> [#uses=1]
|
|
%tmp17 = mul i64 %n, 37 ; <i64> [#uses=1]
|
|
%tmp18 = mul i64 %tmp17, %o ; <i64> [#uses=1]
|
|
%tmp19 = mul i64 %tmp18, %q ; <i64> [#uses=1]
|
|
br i1 %tmp13, label %bb.nph3.split, label %bb4.return_crit_edge.split
|
|
|
|
bb.nph3.split: ; preds = %bb.nph3
|
|
br label %bb2.preheader
|
|
|
|
bb2.preheader: ; preds = %bb.nph3.split, %bb4
|
|
%i.02 = phi i64 [ %tmp11, %bb4 ], [ 0, %bb.nph3.split ] ; <i64> [#uses=3]
|
|
br i1 true, label %bb.nph, label %bb3
|
|
|
|
return: ; preds = %bb4.return_crit_edge.split, %entry
|
|
ret void
|
|
}
|