irreducible.ll
5.7 KB
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; RUN: llvm-profdata merge %S/Inputs/irreducible.proftext -o %t.profdata
; RUN: opt < %s -pgo-instr-use -pgo-test-profile-file=%t.profdata -S | FileCheck %s --check-prefix=USE
; RUN: opt < %s -passes=pgo-instr-use -pgo-test-profile-file=%t.profdata -S | FileCheck %s --check-prefix=USE
; GEN: $__llvm_profile_raw_version = comdat any
; Function Attrs: noinline norecurse nounwind readnone uwtable
define i32 @_Z11irreducibleii(i32 %iter_outer, i32 %iter_inner) local_unnamed_addr #0 {
entry:
%cmp24 = icmp sgt i32 %iter_outer, 0
br i1 %cmp24, label %for.body, label %entry.for.cond.cleanup_crit_edge
entry.for.cond.cleanup_crit_edge: ; preds = %entry
br label %for.cond.cleanup
for.cond.cleanup: ; preds = %entry.for.cond.cleanup_crit_edge, %for.end
%sum.0.lcssa = phi i32 [ 0, %entry.for.cond.cleanup_crit_edge ], [ %sum.1, %for.end ]
ret i32 %sum.0.lcssa
for.body: ; preds = %entry, %for.end
%k.026 = phi i32 [ %inc12, %for.end ], [ 0, %entry ]
%sum.025 = phi i32 [ %sum.1, %for.end ], [ 0, %entry ]
%rem23 = and i32 %k.026, 1
%cmp1 = icmp eq i32 %rem23, 0
br i1 %cmp1, label %entry8, label %for.cond2
for.cond2: ; preds = %for.body, %if.end9
%sum.1 = phi i32 [ %add10, %if.end9 ], [ %sum.025, %for.body ]
%i.0 = phi i32 [ %inc, %if.end9 ], [ 0, %for.body ]
%cmp3 = icmp slt i32 %i.0, %iter_inner
br i1 %cmp3, label %for.body4, label %for.end
; USE: br i1 %cmp3, label %for.body4, label %for.end, !prof !{{[0-9]+}},
; USE-SAME: !irr_loop ![[FOR_COND2_IRR_LOOP:[0-9]+]]
for.body4: ; preds = %for.cond2
%rem5 = srem i32 %k.026, 3
%cmp6 = icmp eq i32 %rem5, 0
br i1 %cmp6, label %entry8, label %if.end9
entry8: ; preds = %for.body4, %for.body
%sum.2 = phi i32 [ %sum.025, %for.body ], [ %sum.1, %for.body4 ]
%i.1 = phi i32 [ 0, %for.body ], [ %i.0, %for.body4 ]
%add = add nsw i32 %sum.2, 4
br label %if.end9
; USE: br label %if.end9,
; USE-SAME: !irr_loop ![[ENTRY8_IRR_LOOP:[0-9]+]]
if.end9: ; preds = %entry8, %for.body4
%sum.3 = phi i32 [ %add, %entry8 ], [ %sum.1, %for.body4 ]
%i.2 = phi i32 [ %i.1, %entry8 ], [ %i.0, %for.body4 ]
%add10 = add nsw i32 %sum.3, 1
%inc = add nsw i32 %i.2, 1
br label %for.cond2
; USE: br label %for.cond2,
; USE-SAME: !irr_loop ![[IF_END9_IRR_LOOP:[0-9]+]]
for.end: ; preds = %for.cond2
%inc12 = add nuw nsw i32 %k.026, 1
%exitcond = icmp eq i32 %inc12, %iter_outer
br i1 %exitcond, label %for.cond.cleanup, label %for.body
}
@targets = local_unnamed_addr global [256 x i8*] zeroinitializer, align 16
@tracing = local_unnamed_addr global i32 0, align 4
; Function Attrs: noinline norecurse nounwind uwtable
define i32 @_Z11irreduciblePh(i8* nocapture readonly %p) {
entry:
%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
br label %dispatch_op
dispatch_op: ; preds = %sw.bb6, %for.cond1
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
]
dispatch_op.sw.bb6_crit_edge: ; preds = %dispatch_op
br label %sw.bb6
sw.bb: ; preds = %indirectgoto, %dispatch_op
br label %exit
TARGET_1: ; preds = %indirectgoto
br label %sw.bb6
; USE: br label %sw.bb6, !irr_loop {{.*}}
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
br label %indirectgoto
TARGET_2: ; preds = %indirectgoto
br label %sw.bb15
; USE: br label %sw.bb15, !irr_loop {{.*}}
sw.bb15: ; preds = %TARGET_2, %dispatch_op
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
br label %indirectgoto
unknown_op: ; preds = %indirectgoto
br label %sw.default
sw.default: ; preds = %unknown_op, %dispatch_op
br label %for.cond1
exit: ; preds = %sw.bb15, %sw.bb
ret i32 0
indirectgoto: ; preds = %if.then18, %if.then
%idxprom21 = zext i32 %0 to i64
%arrayidx22 = getelementptr inbounds [256 x i8*], [256 x i8*]* @targets, i64 0, i64 %idxprom21
%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]+]]
}
; USE: ![[FOR_COND2_IRR_LOOP]] = !{!"loop_header_weight", i64 1050}
; USE: ![[ENTRY8_IRR_LOOP]] = !{!"loop_header_weight", i64 373}
; USE: ![[IF_END9_IRR_LOOP]] = !{!"loop_header_weight", i64 1000}
; USE: ![[SW_BB6_IRR_LOOP]] = !{!"loop_header_weight", i64 501}
; USE: ![[SW_BB15_IRR_LOOP]] = !{!"loop_header_weight", i64 100}
; USE: ![[INDIRECTGOTO_IRR_LOOP]] = !{!"loop_header_weight", i64 400}