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llvm / llvm-project / llvm / 49a8cd29ed54c64b3b1fd80612508262a4a7b519 / . / test / Transforms / Attributor / read_write_returned_arguments_scc.ll
blob: 800e844c59769ab277fa55df82359d2025a3b098 [file] [log] [blame]
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --check-attributes --check-globals
; RUN: opt -attributor -enable-new-pm=0 -attributor-manifest-internal -attributor-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=10 -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_CGSCC_NPM,NOT_CGSCC_OPM,NOT_TUNIT_NPM,IS__TUNIT____,IS________OPM,IS__TUNIT_OPM
; RUN: opt -aa-pipeline=basic-aa -passes=attributor -attributor-manifest-internal -attributor-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=10 -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_CGSCC_OPM,NOT_CGSCC_NPM,NOT_TUNIT_OPM,IS__TUNIT____,IS________NPM,IS__TUNIT_NPM
; RUN: opt -attributor-cgscc -enable-new-pm=0 -attributor-manifest-internal -attributor-annotate-decl-cs -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_TUNIT_NPM,NOT_TUNIT_OPM,NOT_CGSCC_NPM,IS__CGSCC____,IS________OPM,IS__CGSCC_OPM
; RUN: opt -aa-pipeline=basic-aa -passes=attributor-cgscc -attributor-manifest-internal -attributor-annotate-decl-cs -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_TUNIT_NPM,NOT_TUNIT_OPM,NOT_CGSCC_OPM,IS__CGSCC____,IS________NPM,IS__CGSCC_NPM
;
; This is an evolved example to stress test SCC parameter attribute propagation.
; The SCC in this test is made up of the following six function, three of which
; are internal and three externally visible:
;
; static int *internal_ret0_nw(int *n0, int *w0);
; static int *internal_ret1_rw(int *r0, int *w0);
; static int *internal_ret1_rrw(int *r0, int *r1, int *w0);
; int *external_ret2_nrw(int *n0, int *r0, int *w0);
; int *external_sink_ret2_nrw(int *n0, int *r0, int *w0);
; int *external_source_ret2_nrw(int *n0, int *r0, int *w0);
;
; The top four functions call each other while the "sink" function will not
; call anything and the "source" function will not be called in this module.
; The names of the functions define the returned parameter (X for "_retX_"),
; as well as how the parameters are (transitively) used (n = readnone,
; r = readonly, w = writeonly).
;
; What we should see is something along the lines of:
; 1 - Number of functions marked as norecurse
; 6 - Number of functions marked argmemonly
; 6 - Number of functions marked as nounwind
; 16 - Number of arguments marked nocapture
; 4 - Number of arguments marked readnone
; 6 - Number of arguments marked writeonly
; 6 - Number of arguments marked readonly
; 6 - Number of arguments marked returned
;
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
define i32* @external_ret2_nrw(i32* %n0, i32* %r0, i32* %w0) {
; IS__TUNIT____: Function Attrs: argmemonly nofree nosync nounwind
; IS__TUNIT____-LABEL: define {{[^@]+}}@external_ret2_nrw
; IS__TUNIT____-SAME: (i32* nofree [[N0:%.*]], i32* nofree [[R0:%.*]], i32* nofree returned [[W0:%.*]]) #[[ATTR0:[0-9]+]] {
; IS__TUNIT____-NEXT: entry:
; IS__TUNIT____-NEXT: [[CALL:%.*]] = call i32* @internal_ret0_nw(i32* nofree [[N0]], i32* nofree [[W0]]) #[[ATTR2:[0-9]+]]
; IS__TUNIT____-NEXT: [[CALL1:%.*]] = call i32* @internal_ret1_rrw(i32* nofree align 4 [[R0]], i32* nofree [[R0]], i32* nofree [[W0]]) #[[ATTR2]]
; IS__TUNIT____-NEXT: [[CALL2:%.*]] = call i32* @external_sink_ret2_nrw(i32* nofree [[N0]], i32* nocapture nofree readonly [[R0]], i32* nofree writeonly "no-capture-maybe-returned" [[W0]]) #[[ATTR3:[0-9]+]]
; IS__TUNIT____-NEXT: [[CALL3:%.*]] = call i32* @internal_ret1_rw(i32* nofree align 4 [[R0]], i32* nofree [[W0]]) #[[ATTR2]]
; IS__TUNIT____-NEXT: ret i32* [[CALL3]]
;
; IS__CGSCC____: Function Attrs: argmemonly nofree nosync nounwind
; IS__CGSCC____-LABEL: define {{[^@]+}}@external_ret2_nrw
; IS__CGSCC____-SAME: (i32* nofree [[N0:%.*]], i32* nofree [[R0:%.*]], i32* nofree returned [[W0:%.*]]) #[[ATTR0:[0-9]+]] {
; IS__CGSCC____-NEXT: entry:
; IS__CGSCC____-NEXT: [[CALL:%.*]] = call i32* @internal_ret0_nw(i32* nofree [[N0]], i32* nofree [[W0]]) #[[ATTR2:[0-9]+]]
; IS__CGSCC____-NEXT: [[CALL1:%.*]] = call i32* @internal_ret1_rrw(i32* nofree nonnull align 4 dereferenceable(4) [[R0]], i32* nofree nonnull align 4 dereferenceable(4) [[R0]], i32* nofree [[W0]]) #[[ATTR2]]
; IS__CGSCC____-NEXT: [[CALL2:%.*]] = call i32* @external_sink_ret2_nrw(i32* nofree [[N0]], i32* nocapture nofree nonnull readonly align 4 dereferenceable(4) [[R0]], i32* nofree writeonly "no-capture-maybe-returned" [[W0]]) #[[ATTR3:[0-9]+]]
; IS__CGSCC____-NEXT: [[CALL3:%.*]] = call i32* @internal_ret1_rw(i32* nofree nonnull align 4 dereferenceable(4) [[R0]], i32* nofree [[W0]]) #[[ATTR2]]
; IS__CGSCC____-NEXT: ret i32* [[CALL3]]
;
entry:
%call = call i32* @internal_ret0_nw(i32* %n0, i32* %w0)
%call1 = call i32* @internal_ret1_rrw(i32* %r0, i32* %r0, i32* %w0)
%call2 = call i32* @external_sink_ret2_nrw(i32* %n0, i32* %r0, i32* %w0)
%call3 = call i32* @internal_ret1_rw(i32* %r0, i32* %w0)
ret i32* %call3
}
define internal i32* @internal_ret0_nw(i32* %n0, i32* %w0) {
; IS__TUNIT____: Function Attrs: argmemonly nofree nosync nounwind
; IS__TUNIT____-LABEL: define {{[^@]+}}@internal_ret0_nw
; IS__TUNIT____-SAME: (i32* nofree returned [[N0:%.*]], i32* nofree [[W0:%.*]]) #[[ATTR0]] {
; IS__TUNIT____-NEXT: entry:
; IS__TUNIT____-NEXT: [[R0:%.*]] = alloca i32, align 4
; IS__TUNIT____-NEXT: [[R1:%.*]] = alloca i32, align 4
; IS__TUNIT____-NEXT: [[TOBOOL:%.*]] = icmp ne i32* [[N0]], null
; IS__TUNIT____-NEXT: br i1 [[TOBOOL]], label [[IF_END:%.*]], label [[IF_THEN:%.*]]
; IS__TUNIT____: if.then:
; IS__TUNIT____-NEXT: br label [[RETURN:%.*]]
; IS__TUNIT____: if.end:
; IS__TUNIT____-NEXT: store i32 3, i32* [[R0]], align 4
; IS__TUNIT____-NEXT: store i32 5, i32* [[R1]], align 4
; IS__TUNIT____-NEXT: store i32 1, i32* [[W0]], align 4
; IS__TUNIT____-NEXT: [[CALL:%.*]] = call i32* @internal_ret1_rrw(i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nofree noundef nonnull align 4 dereferenceable(4) [[R1]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) #[[ATTR2]]
; IS__TUNIT____-NEXT: [[CALL1:%.*]] = call i32* @external_ret2_nrw(i32* nofree [[N0]], i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) #[[ATTR2]]
; IS__TUNIT____-NEXT: [[CALL2:%.*]] = call i32* @external_ret2_nrw(i32* nofree [[N0]], i32* nofree noundef nonnull align 4 dereferenceable(4) [[R1]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) #[[ATTR2]]
; IS__TUNIT____-NEXT: [[CALL3:%.*]] = call i32* @external_sink_ret2_nrw(i32* nofree [[N0]], i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[R0]], i32* nofree nonnull writeonly align 4 dereferenceable(4) "no-capture-maybe-returned" [[W0]]) #[[ATTR2]]
; IS__TUNIT____-NEXT: [[CALL4:%.*]] = call i32* @external_sink_ret2_nrw(i32* nofree [[N0]], i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[R1]], i32* nofree nonnull writeonly align 4 dereferenceable(4) "no-capture-maybe-returned" [[W0]]) #[[ATTR2]]
; IS__TUNIT____-NEXT: [[CALL5:%.*]] = call i32* @internal_ret0_nw(i32* nofree [[N0]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) #[[ATTR2]]
; IS__TUNIT____-NEXT: br label [[RETURN]]
; IS__TUNIT____: return:
; IS__TUNIT____-NEXT: [[RETVAL_0:%.*]] = phi i32* [ [[CALL5]], [[IF_END]] ], [ [[N0]], [[IF_THEN]] ]
; IS__TUNIT____-NEXT: ret i32* [[RETVAL_0]]
;
; IS__CGSCC____: Function Attrs: argmemonly nofree nosync nounwind
; IS__CGSCC____-LABEL: define {{[^@]+}}@internal_ret0_nw
; IS__CGSCC____-SAME: (i32* nofree returned [[N0:%.*]], i32* nofree [[W0:%.*]]) #[[ATTR0]] {
; IS__CGSCC____-NEXT: entry:
; IS__CGSCC____-NEXT: [[R0:%.*]] = alloca i32, align 4
; IS__CGSCC____-NEXT: [[R1:%.*]] = alloca i32, align 4
; IS__CGSCC____-NEXT: [[TOBOOL:%.*]] = icmp ne i32* [[N0]], null
; IS__CGSCC____-NEXT: br i1 [[TOBOOL]], label [[IF_END:%.*]], label [[IF_THEN:%.*]]
; IS__CGSCC____: if.then:
; IS__CGSCC____-NEXT: br label [[RETURN:%.*]]
; IS__CGSCC____: if.end:
; IS__CGSCC____-NEXT: store i32 3, i32* [[R0]], align 4
; IS__CGSCC____-NEXT: store i32 5, i32* [[R1]], align 4
; IS__CGSCC____-NEXT: store i32 1, i32* [[W0]], align 4
; IS__CGSCC____-NEXT: [[CALL:%.*]] = call i32* @internal_ret1_rrw(i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nofree noundef nonnull align 4 dereferenceable(4) [[R1]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) #[[ATTR2]]
; IS__CGSCC____-NEXT: [[CALL1:%.*]] = call i32* @external_ret2_nrw(i32* nofree [[N0]], i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) #[[ATTR2]]
; IS__CGSCC____-NEXT: [[CALL2:%.*]] = call i32* @external_ret2_nrw(i32* nofree [[N0]], i32* nofree noundef nonnull align 4 dereferenceable(4) [[R1]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) #[[ATTR2]]
; IS__CGSCC____-NEXT: [[CALL3:%.*]] = call i32* @external_sink_ret2_nrw(i32* nofree [[N0]], i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[R0]], i32* nofree nonnull writeonly align 4 dereferenceable(4) "no-capture-maybe-returned" [[W0]]) #[[ATTR4:[0-9]+]]
; IS__CGSCC____-NEXT: [[CALL4:%.*]] = call i32* @external_sink_ret2_nrw(i32* nofree [[N0]], i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[R1]], i32* nofree nonnull writeonly align 4 dereferenceable(4) "no-capture-maybe-returned" [[W0]]) #[[ATTR4]]
; IS__CGSCC____-NEXT: [[CALL5:%.*]] = call i32* @internal_ret0_nw(i32* nofree [[N0]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) #[[ATTR2]]
; IS__CGSCC____-NEXT: br label [[RETURN]]
; IS__CGSCC____: return:
; IS__CGSCC____-NEXT: [[RETVAL_0:%.*]] = phi i32* [ [[CALL5]], [[IF_END]] ], [ [[N0]], [[IF_THEN]] ]
; IS__CGSCC____-NEXT: ret i32* [[RETVAL_0]]
;
entry:
%r0 = alloca i32, align 4
%r1 = alloca i32, align 4
%tobool = icmp ne i32* %n0, null
br i1 %tobool, label %if.end, label %if.then
if.then: ; preds = %entry
br label %return
if.end: ; preds = %entry
store i32 3, i32* %r0, align 4
store i32 5, i32* %r1, align 4
store i32 1, i32* %w0, align 4
%call = call i32* @internal_ret1_rrw(i32* %r0, i32* %r1, i32* %w0)
%call1 = call i32* @external_ret2_nrw(i32* %n0, i32* %r0, i32* %w0)
%call2 = call i32* @external_ret2_nrw(i32* %n0, i32* %r1, i32* %w0)
%call3 = call i32* @external_sink_ret2_nrw(i32* %n0, i32* %r0, i32* %w0)
%call4 = call i32* @external_sink_ret2_nrw(i32* %n0, i32* %r1, i32* %w0)
%call5 = call i32* @internal_ret0_nw(i32* %n0, i32* %w0)
br label %return
return: ; preds = %if.end, %if.then
%retval.0 = phi i32* [ %call5, %if.end ], [ %n0, %if.then ]
ret i32* %retval.0
}
define internal i32* @internal_ret1_rrw(i32* %r0, i32* %r1, i32* %w0) {
; IS__TUNIT____: Function Attrs: argmemonly nofree nosync nounwind
; IS__TUNIT____-LABEL: define {{[^@]+}}@internal_ret1_rrw
; IS__TUNIT____-SAME: (i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0:%.*]], i32* nofree returned [[R1:%.*]], i32* nofree [[W0:%.*]]) #[[ATTR0]] {
; IS__TUNIT____-NEXT: entry:
; IS__TUNIT____-NEXT: [[TMP0:%.*]] = load i32, i32* [[R0]], align 4
; IS__TUNIT____-NEXT: [[TOBOOL:%.*]] = icmp ne i32 [[TMP0]], 0
; IS__TUNIT____-NEXT: br i1 [[TOBOOL]], label [[IF_END:%.*]], label [[IF_THEN:%.*]]
; IS__TUNIT____: if.then:
; IS__TUNIT____-NEXT: br label [[RETURN:%.*]]
; IS__TUNIT____: if.end:
; IS__TUNIT____-NEXT: [[CALL:%.*]] = call i32* @internal_ret1_rw(i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nofree [[W0]]) #[[ATTR2]]
; IS__TUNIT____-NEXT: [[TMP1:%.*]] = load i32, i32* [[R0]], align 4
; IS__TUNIT____-NEXT: [[TMP2:%.*]] = load i32, i32* [[R1]], align 4
; IS__TUNIT____-NEXT: [[ADD:%.*]] = add nsw i32 [[TMP1]], [[TMP2]]
; IS__TUNIT____-NEXT: store i32 [[ADD]], i32* [[W0]], align 4
; IS__TUNIT____-NEXT: [[CALL1:%.*]] = call i32* @internal_ret1_rw(i32* nofree nonnull align 4 dereferenceable(4) [[R1]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) #[[ATTR2]]
; IS__TUNIT____-NEXT: [[CALL2:%.*]] = call i32* @internal_ret0_nw(i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) #[[ATTR2]]
; IS__TUNIT____-NEXT: [[CALL3:%.*]] = call i32* @internal_ret0_nw(i32* nofree nonnull align 4 dereferenceable(4) [[W0]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) #[[ATTR2]]
; IS__TUNIT____-NEXT: [[CALL4:%.*]] = call i32* @external_ret2_nrw(i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nofree nonnull align 4 dereferenceable(4) [[R1]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) #[[ATTR2]]
; IS__TUNIT____-NEXT: [[CALL5:%.*]] = call i32* @external_ret2_nrw(i32* nofree nonnull align 4 dereferenceable(4) [[R1]], i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) #[[ATTR2]]
; IS__TUNIT____-NEXT: [[CALL6:%.*]] = call i32* @external_sink_ret2_nrw(i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nocapture nofree nonnull readonly align 4 dereferenceable(4) [[R1]], i32* nofree nonnull writeonly align 4 dereferenceable(4) "no-capture-maybe-returned" [[W0]]) #[[ATTR2]]
; IS__TUNIT____-NEXT: [[CALL7:%.*]] = call i32* @external_sink_ret2_nrw(i32* nofree nonnull align 4 dereferenceable(4) [[R1]], i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[R0]], i32* nofree nonnull writeonly align 4 dereferenceable(4) "no-capture-maybe-returned" [[W0]]) #[[ATTR2]]
; IS__TUNIT____-NEXT: [[CALL8:%.*]] = call i32* @internal_ret0_nw(i32* nofree nonnull align 4 dereferenceable(4) [[R1]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) #[[ATTR2]]
; IS__TUNIT____-NEXT: br label [[RETURN]]
; IS__TUNIT____: return:
; IS__TUNIT____-NEXT: [[RETVAL_0:%.*]] = phi i32* [ [[CALL8]], [[IF_END]] ], [ [[R1]], [[IF_THEN]] ]
; IS__TUNIT____-NEXT: ret i32* undef
;
; IS__CGSCC____: Function Attrs: argmemonly nofree nosync nounwind
; IS__CGSCC____-LABEL: define {{[^@]+}}@internal_ret1_rrw
; IS__CGSCC____-SAME: (i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0:%.*]], i32* nofree nonnull returned align 4 dereferenceable(4) [[R1:%.*]], i32* nofree [[W0:%.*]]) #[[ATTR0]] {
; IS__CGSCC____-NEXT: entry:
; IS__CGSCC____-NEXT: [[TMP0:%.*]] = load i32, i32* [[R0]], align 4
; IS__CGSCC____-NEXT: [[TOBOOL:%.*]] = icmp ne i32 [[TMP0]], 0
; IS__CGSCC____-NEXT: br i1 [[TOBOOL]], label [[IF_END:%.*]], label [[IF_THEN:%.*]]
; IS__CGSCC____: if.then:
; IS__CGSCC____-NEXT: br label [[RETURN:%.*]]
; IS__CGSCC____: if.end:
; IS__CGSCC____-NEXT: [[CALL:%.*]] = call i32* @internal_ret1_rw(i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nofree [[W0]]) #[[ATTR2]]
; IS__CGSCC____-NEXT: [[TMP1:%.*]] = load i32, i32* [[R0]], align 4
; IS__CGSCC____-NEXT: [[TMP2:%.*]] = load i32, i32* [[R1]], align 4
; IS__CGSCC____-NEXT: [[ADD:%.*]] = add nsw i32 [[TMP1]], [[TMP2]]
; IS__CGSCC____-NEXT: store i32 [[ADD]], i32* [[W0]], align 4
; IS__CGSCC____-NEXT: [[CALL1:%.*]] = call i32* @internal_ret1_rw(i32* nofree nonnull align 4 dereferenceable(4) [[R1]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) #[[ATTR2]]
; IS__CGSCC____-NEXT: [[CALL2:%.*]] = call i32* @internal_ret0_nw(i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) #[[ATTR2]]
; IS__CGSCC____-NEXT: [[CALL3:%.*]] = call i32* @internal_ret0_nw(i32* nofree nonnull align 4 dereferenceable(4) [[W0]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) #[[ATTR2]]
; IS__CGSCC____-NEXT: [[CALL4:%.*]] = call i32* @external_ret2_nrw(i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nofree nonnull align 4 dereferenceable(4) [[R1]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) #[[ATTR2]]
; IS__CGSCC____-NEXT: [[CALL5:%.*]] = call i32* @external_ret2_nrw(i32* nofree nonnull align 4 dereferenceable(4) [[R1]], i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) #[[ATTR2]]
; IS__CGSCC____-NEXT: [[CALL6:%.*]] = call i32* @external_sink_ret2_nrw(i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nocapture nofree nonnull readonly align 4 dereferenceable(4) [[R1]], i32* nofree nonnull writeonly align 4 dereferenceable(4) "no-capture-maybe-returned" [[W0]]) #[[ATTR4]]
; IS__CGSCC____-NEXT: [[CALL7:%.*]] = call i32* @external_sink_ret2_nrw(i32* nofree nonnull align 4 dereferenceable(4) [[R1]], i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[R0]], i32* nofree nonnull writeonly align 4 dereferenceable(4) "no-capture-maybe-returned" [[W0]]) #[[ATTR4]]
; IS__CGSCC____-NEXT: [[CALL8:%.*]] = call i32* @internal_ret0_nw(i32* nofree nonnull align 4 dereferenceable(4) [[R1]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) #[[ATTR2]]
; IS__CGSCC____-NEXT: br label [[RETURN]]
; IS__CGSCC____: return:
; IS__CGSCC____-NEXT: [[RETVAL_0:%.*]] = phi i32* [ [[CALL8]], [[IF_END]] ], [ [[R1]], [[IF_THEN]] ]
; IS__CGSCC____-NEXT: ret i32* undef
;
entry:
%0 = load i32, i32* %r0, align 4
%tobool = icmp ne i32 %0, 0
br i1 %tobool, label %if.end, label %if.then
if.then: ; preds = %entry
br label %return
if.end: ; preds = %entry
%call = call i32* @internal_ret1_rw(i32* %r0, i32* %w0)
%1 = load i32, i32* %r0, align 4
%2 = load i32, i32* %r1, align 4
%add = add nsw i32 %1, %2
store i32 %add, i32* %w0, align 4
%call1 = call i32* @internal_ret1_rw(i32* %r1, i32* %w0)
%call2 = call i32* @internal_ret0_nw(i32* %r0, i32* %w0)
%call3 = call i32* @internal_ret0_nw(i32* %w0, i32* %w0)
%call4 = call i32* @external_ret2_nrw(i32* %r0, i32* %r1, i32* %w0)
%call5 = call i32* @external_ret2_nrw(i32* %r1, i32* %r0, i32* %w0)
%call6 = call i32* @external_sink_ret2_nrw(i32* %r0, i32* %r1, i32* %w0)
%call7 = call i32* @external_sink_ret2_nrw(i32* %r1, i32* %r0, i32* %w0)
%call8 = call i32* @internal_ret0_nw(i32* %r1, i32* %w0)
br label %return
return: ; preds = %if.end, %if.then
%retval.0 = phi i32* [ %call8, %if.end ], [ %r1, %if.then ]
ret i32* %retval.0
}
define i32* @external_sink_ret2_nrw(i32* %n0, i32* %r0, i32* %w0) {
; IS__TUNIT____: Function Attrs: argmemonly nofree nosync nounwind willreturn
; IS__TUNIT____-LABEL: define {{[^@]+}}@external_sink_ret2_nrw
; IS__TUNIT____-SAME: (i32* nofree [[N0:%.*]], i32* nocapture nofree readonly [[R0:%.*]], i32* nofree returned writeonly "no-capture-maybe-returned" [[W0:%.*]]) #[[ATTR1:[0-9]+]] {
; IS__TUNIT____-NEXT: entry:
; IS__TUNIT____-NEXT: [[TOBOOL:%.*]] = icmp ne i32* [[N0]], null
; IS__TUNIT____-NEXT: br i1 [[TOBOOL]], label [[IF_END:%.*]], label [[IF_THEN:%.*]]
; IS__TUNIT____: if.then:
; IS__TUNIT____-NEXT: br label [[RETURN:%.*]]
; IS__TUNIT____: if.end:
; IS__TUNIT____-NEXT: [[TMP0:%.*]] = load i32, i32* [[R0]], align 4
; IS__TUNIT____-NEXT: store i32 [[TMP0]], i32* [[W0]], align 4
; IS__TUNIT____-NEXT: br label [[RETURN]]
; IS__TUNIT____: return:
; IS__TUNIT____-NEXT: ret i32* [[W0]]
;
; IS__CGSCC____: Function Attrs: argmemonly nofree norecurse nosync nounwind willreturn
; IS__CGSCC____-LABEL: define {{[^@]+}}@external_sink_ret2_nrw
; IS__CGSCC____-SAME: (i32* nofree [[N0:%.*]], i32* nocapture nofree readonly [[R0:%.*]], i32* nofree returned writeonly "no-capture-maybe-returned" [[W0:%.*]]) #[[ATTR1:[0-9]+]] {
; IS__CGSCC____-NEXT: entry:
; IS__CGSCC____-NEXT: [[TOBOOL:%.*]] = icmp ne i32* [[N0]], null
; IS__CGSCC____-NEXT: br i1 [[TOBOOL]], label [[IF_END:%.*]], label [[IF_THEN:%.*]]
; IS__CGSCC____: if.then:
; IS__CGSCC____-NEXT: br label [[RETURN:%.*]]
; IS__CGSCC____: if.end:
; IS__CGSCC____-NEXT: [[TMP0:%.*]] = load i32, i32* [[R0]], align 4
; IS__CGSCC____-NEXT: store i32 [[TMP0]], i32* [[W0]], align 4
; IS__CGSCC____-NEXT: br label [[RETURN]]
; IS__CGSCC____: return:
; IS__CGSCC____-NEXT: ret i32* [[W0]]
;
entry:
%tobool = icmp ne i32* %n0, null
br i1 %tobool, label %if.end, label %if.then
if.then: ; preds = %entry
br label %return
if.end: ; preds = %entry
%0 = load i32, i32* %r0, align 4
store i32 %0, i32* %w0, align 4
br label %return
return: ; preds = %if.end, %if.then
ret i32* %w0
}
define internal i32* @internal_ret1_rw(i32* %r0, i32* %w0) {
; IS__TUNIT____: Function Attrs: argmemonly nofree nosync nounwind
; IS__TUNIT____-LABEL: define {{[^@]+}}@internal_ret1_rw
; IS__TUNIT____-SAME: (i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0:%.*]], i32* nofree returned [[W0:%.*]]) #[[ATTR0]] {
; IS__TUNIT____-NEXT: entry:
; IS__TUNIT____-NEXT: [[TMP0:%.*]] = load i32, i32* [[R0]], align 4
; IS__TUNIT____-NEXT: [[TOBOOL:%.*]] = icmp ne i32 [[TMP0]], 0
; IS__TUNIT____-NEXT: br i1 [[TOBOOL]], label [[IF_END:%.*]], label [[IF_THEN:%.*]]
; IS__TUNIT____: if.then:
; IS__TUNIT____-NEXT: br label [[RETURN:%.*]]
; IS__TUNIT____: if.end:
; IS__TUNIT____-NEXT: [[CALL:%.*]] = call i32* @internal_ret1_rrw(i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nofree [[W0]]) #[[ATTR2]]
; IS__TUNIT____-NEXT: [[TMP1:%.*]] = load i32, i32* [[R0]], align 4
; IS__TUNIT____-NEXT: store i32 [[TMP1]], i32* [[W0]], align 4
; IS__TUNIT____-NEXT: [[CALL1:%.*]] = call i32* @internal_ret0_nw(i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) #[[ATTR2]]
; IS__TUNIT____-NEXT: [[CALL2:%.*]] = call i32* @internal_ret0_nw(i32* nofree nonnull align 4 dereferenceable(4) [[W0]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) #[[ATTR2]]
; IS__TUNIT____-NEXT: [[CALL3:%.*]] = call i32* @external_sink_ret2_nrw(i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[R0]], i32* nofree nonnull writeonly align 4 dereferenceable(4) "no-capture-maybe-returned" [[W0]]) #[[ATTR2]]
; IS__TUNIT____-NEXT: [[CALL4:%.*]] = call i32* @external_ret2_nrw(i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) #[[ATTR2]]
; IS__TUNIT____-NEXT: br label [[RETURN]]
; IS__TUNIT____: return:
; IS__TUNIT____-NEXT: [[RETVAL_0:%.*]] = phi i32* [ [[CALL4]], [[IF_END]] ], [ [[W0]], [[IF_THEN]] ]
; IS__TUNIT____-NEXT: ret i32* [[RETVAL_0]]
;
; IS__CGSCC____: Function Attrs: argmemonly nofree nosync nounwind
; IS__CGSCC____-LABEL: define {{[^@]+}}@internal_ret1_rw
; IS__CGSCC____-SAME: (i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0:%.*]], i32* nofree returned [[W0:%.*]]) #[[ATTR0]] {
; IS__CGSCC____-NEXT: entry:
; IS__CGSCC____-NEXT: [[TMP0:%.*]] = load i32, i32* [[R0]], align 4
; IS__CGSCC____-NEXT: [[TOBOOL:%.*]] = icmp ne i32 [[TMP0]], 0
; IS__CGSCC____-NEXT: br i1 [[TOBOOL]], label [[IF_END:%.*]], label [[IF_THEN:%.*]]
; IS__CGSCC____: if.then:
; IS__CGSCC____-NEXT: br label [[RETURN:%.*]]
; IS__CGSCC____: if.end:
; IS__CGSCC____-NEXT: [[CALL:%.*]] = call i32* @internal_ret1_rrw(i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nofree [[W0]]) #[[ATTR2]]
; IS__CGSCC____-NEXT: [[TMP1:%.*]] = load i32, i32* [[R0]], align 4
; IS__CGSCC____-NEXT: store i32 [[TMP1]], i32* [[W0]], align 4
; IS__CGSCC____-NEXT: [[CALL1:%.*]] = call i32* @internal_ret0_nw(i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) #[[ATTR2]]
; IS__CGSCC____-NEXT: [[CALL2:%.*]] = call i32* @internal_ret0_nw(i32* nofree nonnull align 4 dereferenceable(4) [[W0]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) #[[ATTR2]]
; IS__CGSCC____-NEXT: [[CALL3:%.*]] = call i32* @external_sink_ret2_nrw(i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[R0]], i32* nofree nonnull writeonly align 4 dereferenceable(4) "no-capture-maybe-returned" [[W0]]) #[[ATTR4]]
; IS__CGSCC____-NEXT: [[CALL4:%.*]] = call i32* @external_ret2_nrw(i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) #[[ATTR2]]
; IS__CGSCC____-NEXT: br label [[RETURN]]
; IS__CGSCC____: return:
; IS__CGSCC____-NEXT: [[RETVAL_0:%.*]] = phi i32* [ [[CALL4]], [[IF_END]] ], [ [[W0]], [[IF_THEN]] ]
; IS__CGSCC____-NEXT: ret i32* [[RETVAL_0]]
;
entry:
%0 = load i32, i32* %r0, align 4
%tobool = icmp ne i32 %0, 0
br i1 %tobool, label %if.end, label %if.then
if.then: ; preds = %entry
br label %return
if.end: ; preds = %entry
%call = call i32* @internal_ret1_rrw(i32* %r0, i32* %r0, i32* %w0)
%1 = load i32, i32* %r0, align 4
store i32 %1, i32* %w0, align 4
%call1 = call i32* @internal_ret0_nw(i32* %r0, i32* %w0)
%call2 = call i32* @internal_ret0_nw(i32* %w0, i32* %w0)
%call3 = call i32* @external_sink_ret2_nrw(i32* %r0, i32* %r0, i32* %w0)
%call4 = call i32* @external_ret2_nrw(i32* %r0, i32* %r0, i32* %w0)
br label %return
return: ; preds = %if.end, %if.then
%retval.0 = phi i32* [ %call4, %if.end ], [ %w0, %if.then ]
ret i32* %retval.0
}
define i32* @external_source_ret2_nrw(i32* %n0, i32* %r0, i32* %w0) {
; IS__TUNIT____: Function Attrs: argmemonly nofree nosync nounwind
; IS__TUNIT____-LABEL: define {{[^@]+}}@external_source_ret2_nrw
; IS__TUNIT____-SAME: (i32* nofree [[N0:%.*]], i32* nofree [[R0:%.*]], i32* nofree returned [[W0:%.*]]) #[[ATTR0]] {
; IS__TUNIT____-NEXT: entry:
; IS__TUNIT____-NEXT: [[CALL:%.*]] = call i32* @external_sink_ret2_nrw(i32* nofree [[N0]], i32* nocapture nofree readonly [[R0]], i32* nofree writeonly "no-capture-maybe-returned" [[W0]]) #[[ATTR3]]
; IS__TUNIT____-NEXT: [[CALL1:%.*]] = call i32* @external_ret2_nrw(i32* nofree [[N0]], i32* nofree [[R0]], i32* nofree [[W0]]) #[[ATTR2]]
; IS__TUNIT____-NEXT: ret i32* [[CALL1]]
;
; IS__CGSCC____: Function Attrs: argmemonly nofree nosync nounwind
; IS__CGSCC____-LABEL: define {{[^@]+}}@external_source_ret2_nrw
; IS__CGSCC____-SAME: (i32* nofree [[N0:%.*]], i32* nofree [[R0:%.*]], i32* nofree returned [[W0:%.*]]) #[[ATTR0]] {
; IS__CGSCC____-NEXT: entry:
; IS__CGSCC____-NEXT: [[CALL:%.*]] = call i32* @external_sink_ret2_nrw(i32* nofree [[N0]], i32* nocapture nofree readonly [[R0]], i32* nofree writeonly "no-capture-maybe-returned" [[W0]]) #[[ATTR3]]
; IS__CGSCC____-NEXT: [[CALL1:%.*]] = call i32* @external_ret2_nrw(i32* nofree [[N0]], i32* nofree [[R0]], i32* nofree [[W0]]) #[[ATTR4]]
; IS__CGSCC____-NEXT: ret i32* [[CALL1]]
;
entry:
%call = call i32* @external_sink_ret2_nrw(i32* %n0, i32* %r0, i32* %w0)
%call1 = call i32* @external_ret2_nrw(i32* %n0, i32* %r0, i32* %w0)
ret i32* %call1
}
; Verify that we see only expected attribute sets, the above lines only check
; for a subset relation.
;.
; IS__TUNIT____: attributes #[[ATTR0]] = { argmemonly nofree nosync nounwind }
; IS__TUNIT____: attributes #[[ATTR1]] = { argmemonly nofree nosync nounwind willreturn }
; IS__TUNIT____: attributes #[[ATTR2]] = { nofree nosync nounwind }
; IS__TUNIT____: attributes #[[ATTR3]] = { nofree nosync nounwind willreturn }
;.
; IS__CGSCC____: attributes #[[ATTR0]] = { argmemonly nofree nosync nounwind }
; IS__CGSCC____: attributes #[[ATTR1]] = { argmemonly nofree norecurse nosync nounwind willreturn }
; IS__CGSCC____: attributes #[[ATTR2]] = { nofree nosync nounwind }
; IS__CGSCC____: attributes #[[ATTR3]] = { nounwind willreturn }
; IS__CGSCC____: attributes #[[ATTR4]] = { nounwind }
;.