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Simplify irreducible loop metadata test code.

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Summary:
Shorten the irreducible loop metadata test code by removing insignificant
instructions.

Reviewers: davidxl

Reviewed By: davidxl

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D40043

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@318182 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Hiroshi Yamauchi 2017-11-14 19:48:59 +00:00
parent 52a5b26bf5
commit 7f62a83c8d
2 changed files with 17 additions and 111 deletions
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61
test/Analysis/BlockFrequencyInfo/irreducible_pgo.ll
View File

@ -79,28 +79,16 @@ for.end: ; preds = %for.cond2
; Function Attrs: noinline norecurse nounwind uwtable
define i32 @_Z11irreduciblePh(i8* nocapture readonly %p) !prof !27 {
entry:
store <2 x i8*> <i8* blockaddress(@_Z11irreduciblePh, %sw.bb), i8* blockaddress(@_Z11irreduciblePh, %TARGET_1)>, <2 x i8*>* bitcast ([256 x i8*]* @targets to <2 x i8*>*), align 16
store i8* blockaddress(@_Z11irreduciblePh, %TARGET_2), i8** getelementptr inbounds ([256 x i8*], [256 x i8*]* @targets, i64 0, i64 2), align 16
%0 = load i32, i32* @tracing, align 4
%1 = trunc i32 %0 to i8
%tobool = icmp eq i32 %0, 0
br label %for.cond1
for.cond1: ; preds = %sw.default, %entry
%p.addr.0 = phi i8* [ %p, %entry ], [ %p.addr.4, %sw.default ]
%sum.0 = phi i32 [ 0, %entry ], [ %add25, %sw.default ]
%incdec.ptr = getelementptr inbounds i8, i8* %p.addr.0, i64 1
%1 = load i8, i8* %p.addr.0, align 1
%incdec.ptr2 = getelementptr inbounds i8, i8* %p.addr.0, i64 2
%2 = load i8, i8* %incdec.ptr, align 1
%conv3 = zext i8 %2 to i32
br label %dispatch_op
dispatch_op: ; preds = %sw.bb6, %for.cond1
%p.addr.1 = phi i8* [ %incdec.ptr2, %for.cond1 ], [ %p.addr.2, %sw.bb6 ]
%op.0 = phi i8 [ %1, %for.cond1 ], [ 1, %sw.bb6 ]
%oparg.0 = phi i32 [ %conv3, %for.cond1 ], [ %oparg.2, %sw.bb6 ]
%sum.1 = phi i32 [ %sum.0, %for.cond1 ], [ %add7, %sw.bb6 ]
switch i8 %op.0, label %sw.default [
switch i8 %1, label %sw.default [
i8 0, label %sw.bb
i8 1, label %dispatch_op.sw.bb6_crit_edge
i8 2, label %sw.bb15
@ -110,75 +98,40 @@ dispatch_op.sw.bb6_crit_edge: ; preds = %dispatch_op
br label %sw.bb6
sw.bb: ; preds = %indirectgoto, %dispatch_op
%oparg.1 = phi i32 [ %oparg.0, %dispatch_op ], [ 0, %indirectgoto ]
%sum.2 = phi i32 [ %sum.1, %dispatch_op ], [ %sum.7, %indirectgoto ]
%add.neg = sub i32 -5, %oparg.1
%sub = add i32 %add.neg, %sum.2
br label %exit
TARGET_1: ; preds = %indirectgoto
%incdec.ptr4 = getelementptr inbounds i8, i8* %add.ptr.pn, i64 2
%3 = load i8, i8* %p.addr.5, align 1
%conv5 = zext i8 %3 to i32
br label %sw.bb6
sw.bb6: ; preds = %TARGET_1, %dispatch_op.sw.bb6_crit_edge
%p.addr.2 = phi i8* [ %incdec.ptr4, %TARGET_1 ], [ %p.addr.1, %dispatch_op.sw.bb6_crit_edge ]
%oparg.2 = phi i32 [ %conv5, %TARGET_1 ], [ %oparg.0, %dispatch_op.sw.bb6_crit_edge ]
%sum.3 = phi i32 [ %sum.7, %TARGET_1 ], [ %sum.1, %dispatch_op.sw.bb6_crit_edge ]
%mul = mul nsw i32 %oparg.2, 7
%add7 = add nsw i32 %sum.3, %mul
%rem46 = and i32 %add7, 1
%cmp8 = icmp eq i32 %rem46, 0
br i1 %cmp8, label %dispatch_op, label %if.then, !prof !37, !irr_loop !38
br i1 %tobool, label %dispatch_op, label %if.then, !prof !37, !irr_loop !38
if.then: ; preds = %sw.bb6
%mul9 = mul nsw i32 %add7, 9
br label %indirectgoto
TARGET_2: ; preds = %indirectgoto
%incdec.ptr13 = getelementptr inbounds i8, i8* %add.ptr.pn, i64 2
%4 = load i8, i8* %p.addr.5, align 1
%conv14 = zext i8 %4 to i32
br label %sw.bb15
sw.bb15: ; preds = %TARGET_2, %dispatch_op
%p.addr.3 = phi i8* [ %p.addr.1, %dispatch_op ], [ %incdec.ptr13, %TARGET_2 ]
%oparg.3 = phi i32 [ %oparg.0, %dispatch_op ], [ %conv14, %TARGET_2 ]
%sum.4 = phi i32 [ %sum.1, %dispatch_op ], [ %sum.7, %TARGET_2 ]
%add16 = add nsw i32 %oparg.3, 3
%add17 = add nsw i32 %add16, %sum.4
br i1 %tobool, label %if.then18, label %exit, !prof !39, !irr_loop !40
if.then18: ; preds = %sw.bb15
%idx.ext = sext i32 %oparg.3 to i64
%add.ptr = getelementptr inbounds i8, i8* %p.addr.3, i64 %idx.ext
%mul19 = mul nsw i32 %add17, 17
br label %indirectgoto
unknown_op: ; preds = %indirectgoto
%sub24 = add nsw i32 %sum.7, -4
br label %sw.default
sw.default: ; preds = %unknown_op, %dispatch_op
%p.addr.4 = phi i8* [ %p.addr.5, %unknown_op ], [ %p.addr.1, %dispatch_op ]
%sum.5 = phi i32 [ %sub24, %unknown_op ], [ %sum.1, %dispatch_op ]
%add25 = add nsw i32 %sum.5, 11
br label %for.cond1
exit: ; preds = %sw.bb15, %sw.bb
%sum.6 = phi i32 [ %sub, %sw.bb ], [ %add17, %sw.bb15 ]
ret i32 %sum.6
ret i32 0
indirectgoto: ; preds = %if.then18, %if.then
%add.ptr.pn = phi i8* [ %add.ptr, %if.then18 ], [ %p.addr.2, %if.then ]
%sum.7 = phi i32 [ %mul19, %if.then18 ], [ %mul9, %if.then ]
%p.addr.5 = getelementptr inbounds i8, i8* %add.ptr.pn, i64 1
%5 = load i8, i8* %add.ptr.pn, align 1
%idxprom21 = zext i8 %5 to i64
%idxprom21 = zext i32 %0 to i64
%arrayidx22 = getelementptr inbounds [256 x i8*], [256 x i8*]* @targets, i64 0, i64 %idxprom21
%6 = load i8*, i8** %arrayidx22, align 8
indirectbr i8* %6, [label %unknown_op, label %sw.bb, label %TARGET_1, label %TARGET_2], !prof !41, !irr_loop !42
%target = load i8*, i8** %arrayidx22, align 8
indirectbr i8* %target, [label %unknown_op, label %sw.bb, label %TARGET_1, label %TARGET_2], !prof !41, !irr_loop !42
}
!36 = !{!"branch_weights", i32 0, i32 0, i32 201, i32 1}

67
test/Transforms/PGOProfile/irreducible.ll
View File

@ -68,28 +68,16 @@ for.end: ; preds = %for.cond2
; Function Attrs: noinline norecurse nounwind uwtable
define i32 @_Z11irreduciblePh(i8* nocapture readonly %p) {
entry:
store <2 x i8*> <i8* blockaddress(@_Z11irreduciblePh, %sw.bb), i8* blockaddress(@_Z11irreduciblePh, %TARGET_1)>, <2 x i8*>* bitcast ([256 x i8*]* @targets to <2 x i8*>*), align 16
store i8* blockaddress(@_Z11irreduciblePh, %TARGET_2), i8** getelementptr inbounds ([256 x i8*], [256 x i8*]* @targets, i64 0, i64 2), align 16
%0 = load i32, i32* @tracing, align 4
%1 = trunc i32 %0 to i8
%tobool = icmp eq i32 %0, 0
br label %for.cond1
for.cond1: ; preds = %sw.default, %entry
%p.addr.0 = phi i8* [ %p, %entry ], [ %p.addr.4, %sw.default ]
%sum.0 = phi i32 [ 0, %entry ], [ %add25, %sw.default ]
%incdec.ptr = getelementptr inbounds i8, i8* %p.addr.0, i64 1
%1 = load i8, i8* %p.addr.0, align 1
%incdec.ptr2 = getelementptr inbounds i8, i8* %p.addr.0, i64 2
%2 = load i8, i8* %incdec.ptr, align 1
%conv3 = zext i8 %2 to i32
br label %dispatch_op
dispatch_op: ; preds = %sw.bb6, %for.cond1
%p.addr.1 = phi i8* [ %incdec.ptr2, %for.cond1 ], [ %p.addr.2, %sw.bb6 ]
%op.0 = phi i8 [ %1, %for.cond1 ], [ 1, %sw.bb6 ]
%oparg.0 = phi i32 [ %conv3, %for.cond1 ], [ %oparg.2, %sw.bb6 ]
%sum.1 = phi i32 [ %sum.0, %for.cond1 ], [ %add7, %sw.bb6 ]
switch i8 %op.0, label %sw.default [
switch i8 %1, label %sw.default [
i8 0, label %sw.bb
i8 1, label %dispatch_op.sw.bb6_crit_edge
i8 2, label %sw.bb15
@ -99,80 +87,45 @@ dispatch_op.sw.bb6_crit_edge: ; preds = %dispatch_op
br label %sw.bb6
sw.bb: ; preds = %indirectgoto, %dispatch_op
%oparg.1 = phi i32 [ %oparg.0, %dispatch_op ], [ 0, %indirectgoto ]
%sum.2 = phi i32 [ %sum.1, %dispatch_op ], [ %sum.7, %indirectgoto ]
%add.neg = sub i32 -5, %oparg.1
%sub = add i32 %add.neg, %sum.2
br label %exit
TARGET_1: ; preds = %indirectgoto
%incdec.ptr4 = getelementptr inbounds i8, i8* %add.ptr.pn, i64 2
%3 = load i8, i8* %p.addr.5, align 1
%conv5 = zext i8 %3 to i32
br label %sw.bb6
sw.bb6: ; preds = %dispatch_op.sw.bb6_crit_edge, %TARGET_1
%p.addr.2 = phi i8* [ %incdec.ptr4, %TARGET_1 ], [ %p.addr.1, %dispatch_op.sw.bb6_crit_edge ]
%oparg.2 = phi i32 [ %conv5, %TARGET_1 ], [ %oparg.0, %dispatch_op.sw.bb6_crit_edge ]
%sum.3 = phi i32 [ %sum.7, %TARGET_1 ], [ %sum.1, %dispatch_op.sw.bb6_crit_edge ]
%mul = mul nsw i32 %oparg.2, 7
%add7 = add nsw i32 %sum.3, %mul
%rem46 = and i32 %add7, 1
%cmp8 = icmp eq i32 %rem46, 0
br i1 %cmp8, label %dispatch_op, label %if.then
; USE: br i1 %cmp8, label %dispatch_op, label %if.then, !prof !{{[0-9]+}},
sw.bb6: ; preds = %TARGET_1, %dispatch_op.sw.bb6_crit_edge
br i1 %tobool, label %dispatch_op, label %if.then
; USE: br i1 %tobool, label %dispatch_op, label %if.then, !prof !{{[0-9]+}},
; USE-SAME: !irr_loop ![[SW_BB6_IRR_LOOP:[0-9]+]]
if.then: ; preds = %sw.bb6
%mul9 = mul nsw i32 %add7, 9
br label %indirectgoto
TARGET_2: ; preds = %indirectgoto
%incdec.ptr13 = getelementptr inbounds i8, i8* %add.ptr.pn, i64 2
%4 = load i8, i8* %p.addr.5, align 1
%conv14 = zext i8 %4 to i32
br label %sw.bb15
sw.bb15: ; preds = %TARGET_2, %dispatch_op
%p.addr.3 = phi i8* [ %p.addr.1, %dispatch_op ], [ %incdec.ptr13, %TARGET_2 ]
%oparg.3 = phi i32 [ %oparg.0, %dispatch_op ], [ %conv14, %TARGET_2 ]
%sum.4 = phi i32 [ %sum.1, %dispatch_op ], [ %sum.7, %TARGET_2 ]
%add16 = add nsw i32 %oparg.3, 3
%add17 = add nsw i32 %add16, %sum.4
br i1 %tobool, label %if.then18, label %exit
; USE: br i1 %tobool, label %if.then18, label %exit, !prof !{{[0-9]+}},
; USE-SAME: !irr_loop ![[SW_BB15_IRR_LOOP:[0-9]+]]
if.then18: ; preds = %sw.bb15
%idx.ext = sext i32 %oparg.3 to i64
%add.ptr = getelementptr inbounds i8, i8* %p.addr.3, i64 %idx.ext
%mul19 = mul nsw i32 %add17, 17
br label %indirectgoto
unknown_op: ; preds = %indirectgoto
%sub24 = add nsw i32 %sum.7, -4
br label %sw.default
sw.default: ; preds = %unknown_op, %dispatch_op
%p.addr.4 = phi i8* [ %p.addr.5, %unknown_op ], [ %p.addr.1, %dispatch_op ]
%sum.5 = phi i32 [ %sub24, %unknown_op ], [ %sum.1, %dispatch_op ]
%add25 = add nsw i32 %sum.5, 11
br label %for.cond1
exit: ; preds = %sw.bb15, %sw.bb
%sum.6 = phi i32 [ %sub, %sw.bb ], [ %add17, %sw.bb15 ]
ret i32 %sum.6
ret i32 0
indirectgoto: ; preds = %if.then18, %if.then
%add.ptr.pn = phi i8* [ %add.ptr, %if.then18 ], [ %p.addr.2, %if.then ]
%sum.7 = phi i32 [ %mul19, %if.then18 ], [ %mul9, %if.then ]
%p.addr.5 = getelementptr inbounds i8, i8* %add.ptr.pn, i64 1
%5 = load i8, i8* %add.ptr.pn, align 1
%idxprom21 = zext i8 %5 to i64
%idxprom21 = zext i32 %0 to i64
%arrayidx22 = getelementptr inbounds [256 x i8*], [256 x i8*]* @targets, i64 0, i64 %idxprom21
%6 = load i8*, i8** %arrayidx22, align 8
indirectbr i8* %6, [label %unknown_op, label %sw.bb, label %TARGET_1, label %TARGET_2]
; USE: indirectbr i8* %6, [label %unknown_op, label %sw.bb, label %TARGET_1, label %TARGET_2], !prof !{{[0-9]+}},
%target = load i8*, i8** %arrayidx22, align 8
indirectbr i8* %target, [label %unknown_op, label %sw.bb, label %TARGET_1, label %TARGET_2]
; USE: indirectbr i8* %target, [label %unknown_op, label %sw.bb, label %TARGET_1, label %TARGET_2], !prof !{{[0-9]+}},
; USE-SAME: !irr_loop ![[INDIRECTGOTO_IRR_LOOP:[0-9]+]]
}