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llvm-project/llvm/test/Transforms/IndVarSimplify/addrec-gep.ll

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Change tests from "opt %s" to "opt < %s" so that opt doesn't see the input filename so that opt doesn't print the input filename in the output so that grep lines in the tests don't unintentionally match strings in the input filename. llvm-svn: 81537
2009-09-12 02:01:28 +08:00
; RUN: opt < %s -indvars -S > %t
Generalize SCEVExpander::visitAddRecExpr's GEP persuit, and avoid 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. llvm-svn: 72366
2009-05-25 02:06:31 +08:00
; 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.
Avoid creating canonical induction variables for non-native types. For example, on 32-bit architecture, don't promote all uses of the IV to 64-bits just because one use is a 64-bit cast. Alternate implementation of the patch by Arnaud de Grandmaison. llvm-svn: 127884
2011-03-19 00:50:32 +08:00
target datalayout = "e-p:64:64:64-n:32:64"
Generalize SCEVExpander::visitAddRecExpr's GEP persuit, and avoid 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. llvm-svn: 72366
2009-05-25 02:06:31 +08:00
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]
Reapply the new LoopStrengthReduction code, with compile time and bug fixes, and with improved heuristics for analyzing foreign-loop addrecs. This change also flattens IVUsers, eliminating the stride-oriented groupings, which makes it easier to work with. llvm-svn: 95975
2010-02-12 18:34:29 +08:00
%z0 = add i64 %tmp3, 5203
Generalize SCEVExpander::visitAddRecExpr's GEP persuit, and avoid 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. llvm-svn: 72366
2009-05-25 02:06:31 +08:00
%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
}