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; 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=6 -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=6 -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
; PR36485
; musttail call result can't be replaced with a constant, unless the call can be removed
declare i32 @external()
define i8* @start(i8 %v) {
;
; IS__TUNIT_OPM-LABEL: define {{[^@]+}}@start
; IS__TUNIT_OPM-SAME: (i8 [[V:%.*]]) {
; IS__TUNIT_OPM-NEXT: [[C1:%.*]] = icmp eq i8 [[V]], 0
; IS__TUNIT_OPM-NEXT: br i1 [[C1]], label [[TRUE:%.*]], label [[FALSE:%.*]]
; IS__TUNIT_OPM: true:
; IS__TUNIT_OPM-NEXT: [[CA:%.*]] = musttail call i8* @side_effects(i8 [[V]])
; IS__TUNIT_OPM-NEXT: ret i8* [[CA]]
; IS__TUNIT_OPM: false:
; IS__TUNIT_OPM-NEXT: [[C2:%.*]] = icmp eq i8 [[V]], 1
; IS__TUNIT_OPM-NEXT: br i1 [[C2]], label [[C2_TRUE:%.*]], label [[C2_FALSE:%.*]]
; IS__TUNIT_OPM: c2_true:
; IS__TUNIT_OPM-NEXT: ret i8* null
; IS__TUNIT_OPM: c2_false:
; IS__TUNIT_OPM-NEXT: [[CA2:%.*]] = musttail call i8* @dont_zap_me(i8 undef)
; IS__TUNIT_OPM-NEXT: ret i8* [[CA2]]
;
; IS__TUNIT_NPM-LABEL: define {{[^@]+}}@start
; IS__TUNIT_NPM-SAME: (i8 [[V:%.*]]) {
; IS__TUNIT_NPM-NEXT: [[C1:%.*]] = icmp eq i8 [[V]], 0
; IS__TUNIT_NPM-NEXT: br i1 [[C1]], label [[TRUE:%.*]], label [[FALSE:%.*]]
; IS__TUNIT_NPM: true:
; IS__TUNIT_NPM-NEXT: [[CA:%.*]] = musttail call i8* @side_effects(i8 undef)
; IS__TUNIT_NPM-NEXT: ret i8* [[CA]]
; IS__TUNIT_NPM: false:
; IS__TUNIT_NPM-NEXT: [[C2:%.*]] = icmp eq i8 [[V]], 1
; IS__TUNIT_NPM-NEXT: br i1 [[C2]], label [[C2_TRUE:%.*]], label [[C2_FALSE:%.*]]
; IS__TUNIT_NPM: c2_true:
; IS__TUNIT_NPM-NEXT: ret i8* null
; IS__TUNIT_NPM: c2_false:
; IS__TUNIT_NPM-NEXT: [[CA2:%.*]] = musttail call i8* @dont_zap_me(i8 undef)
; IS__TUNIT_NPM-NEXT: ret i8* [[CA2]]
;
; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@start
; IS__CGSCC_OPM-SAME: (i8 [[V:%.*]]) {
; IS__CGSCC_OPM-NEXT: [[C1:%.*]] = icmp eq i8 [[V]], 0
; IS__CGSCC_OPM-NEXT: br i1 [[C1]], label [[TRUE:%.*]], label [[FALSE:%.*]]
; IS__CGSCC_OPM: true:
; IS__CGSCC_OPM-NEXT: [[CA:%.*]] = musttail call i8* @side_effects(i8 [[V]])
; IS__CGSCC_OPM-NEXT: ret i8* [[CA]]
; IS__CGSCC_OPM: false:
; IS__CGSCC_OPM-NEXT: [[C2:%.*]] = icmp eq i8 [[V]], 1
; IS__CGSCC_OPM-NEXT: br i1 [[C2]], label [[C2_TRUE:%.*]], label [[C2_FALSE:%.*]]
; IS__CGSCC_OPM: c2_true:
; IS__CGSCC_OPM-NEXT: ret i8* undef
; IS__CGSCC_OPM: c2_false:
; IS__CGSCC_OPM-NEXT: [[CA2:%.*]] = musttail call i8* @dont_zap_me(i8 undef)
; IS__CGSCC_OPM-NEXT: ret i8* [[CA2]]
;
; IS__CGSCC_NPM-LABEL: define {{[^@]+}}@start
; IS__CGSCC_NPM-SAME: (i8 [[V:%.*]]) {
; IS__CGSCC_NPM-NEXT: [[C1:%.*]] = icmp eq i8 [[V]], 0
; IS__CGSCC_NPM-NEXT: br i1 [[C1]], label [[TRUE:%.*]], label [[FALSE:%.*]]
; IS__CGSCC_NPM: true:
; IS__CGSCC_NPM-NEXT: [[CA:%.*]] = musttail call i8* @side_effects(i8 undef)
; IS__CGSCC_NPM-NEXT: ret i8* [[CA]]
; IS__CGSCC_NPM: false:
; IS__CGSCC_NPM-NEXT: [[C2:%.*]] = icmp eq i8 [[V]], 1
; IS__CGSCC_NPM-NEXT: br i1 [[C2]], label [[C2_TRUE:%.*]], label [[C2_FALSE:%.*]]
; IS__CGSCC_NPM: c2_true:
; IS__CGSCC_NPM-NEXT: ret i8* undef
; IS__CGSCC_NPM: c2_false:
; IS__CGSCC_NPM-NEXT: [[CA2:%.*]] = musttail call i8* @dont_zap_me(i8 undef)
; IS__CGSCC_NPM-NEXT: ret i8* [[CA2]]
;
%c1 = icmp eq i8 %v, 0
br i1 %c1, label %true, label %false
true:
; FIXME: propagate the value information for %v
%ca = musttail call i8* @side_effects(i8 %v)
ret i8* %ca
false:
%c2 = icmp eq i8 %v, 1
br i1 %c2, label %c2_true, label %c2_false
c2_true:
%ca1 = musttail call i8* @no_side_effects(i8 %v)
ret i8* %ca1
c2_false:
%ca2 = musttail call i8* @dont_zap_me(i8 %v)
ret i8* %ca2
}
define internal i8* @side_effects(i8 %v) {
; IS________OPM-LABEL: define {{[^@]+}}@side_effects
; IS________OPM-SAME: (i8 [[V:%.*]]) {
; IS________OPM-NEXT: [[I1:%.*]] = call i32 @external()
; IS________OPM-NEXT: [[CA:%.*]] = musttail call i8* @start(i8 [[V]])
; IS________OPM-NEXT: ret i8* [[CA]]
;
; IS________NPM-LABEL: define {{[^@]+}}@side_effects
; IS________NPM-SAME: (i8 [[V:%.*]]) {
; IS________NPM-NEXT: [[I1:%.*]] = call i32 @external()
; IS________NPM-NEXT: [[CA:%.*]] = musttail call i8* @start(i8 noundef 0)
; IS________NPM-NEXT: ret i8* [[CA]]
;
%i1 = call i32 @external()
; since this goes back to `start` the SCPP should be see that the return value
; is always `null`.
; The call can't be removed due to `external` call above, though.
%ca = musttail call i8* @start(i8 %v)
; Thus the result must be returned anyway
ret i8* %ca
}
define internal i8* @no_side_effects(i8 %v) readonly nounwind {
; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
; IS__CGSCC____-LABEL: define {{[^@]+}}@no_side_effects
; IS__CGSCC____-SAME: (i8 [[V:%.*]]) #[[ATTR0:[0-9]+]] {
; IS__CGSCC____-NEXT: ret i8* undef
;
ret i8* null
}
define internal i8* @dont_zap_me(i8 %v) {
; CHECK-LABEL: define {{[^@]+}}@dont_zap_me
; CHECK-SAME: (i8 [[V:%.*]]) {
; CHECK-NEXT: [[I1:%.*]] = call i32 @external()
; CHECK-NEXT: ret i8* undef
;
%i1 = call i32 @external()
ret i8* null
}
;.
; IS__CGSCC____: attributes #[[ATTR0]] = { nofree norecurse nosync nounwind readnone willreturn }
;.
|
