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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 -aa-pipeline=basic-aa -passes=attributor -attributor-manifest-internal -attributor-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=2 -S < %s | FileCheck %s --check-prefixes=CHECK,TUNIT
; RUN: opt -aa-pipeline=basic-aa -passes=attributor-cgscc -attributor-manifest-internal -attributor-annotate-decl-cs -S < %s | FileCheck %s --check-prefixes=CHECK,CGSCC
; PR2498
; This test tries to convince CHECK about promoting the load from %A + 2,
; because there is a load of %A in the entry block
define internal i32 @callee(i1 %C, ptr %A) {
;
; CHECK: Function Attrs: nofree norecurse nosync nounwind willreturn memory(argmem: read)
; CHECK-LABEL: define {{[^@]+}}@callee
; CHECK-SAME: (ptr nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[A:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A_0:%.*]] = load i32, ptr [[A]], align 4
; CHECK-NEXT: br label [[F:%.*]]
; CHECK: T:
; CHECK-NEXT: unreachable
; CHECK: F:
; CHECK-NEXT: [[A_2:%.*]] = getelementptr i32, ptr [[A]], i32 2
; CHECK-NEXT: [[R:%.*]] = load i32, ptr [[A_2]], align 4
; CHECK-NEXT: ret i32 [[R]]
;
entry:
; Unconditonally load the element at %A
%A.0 = load i32, ptr %A
br i1 %C, label %T, label %F
T:
ret i32 %A.0
F:
; Load the element at offset two from %A. This should not be promoted!
%A.2 = getelementptr i32, ptr %A, i32 2
%R = load i32, ptr %A.2
ret i32 %R
}
define i32 @foo(ptr %A) {
; TUNIT: Function Attrs: nofree norecurse nosync nounwind willreturn memory(argmem: read)
; TUNIT-LABEL: define {{[^@]+}}@foo
; TUNIT-SAME: (ptr nocapture nofree readonly [[A:%.*]]) #[[ATTR0]] {
; TUNIT-NEXT: [[X:%.*]] = call i32 @callee(ptr nocapture nofree readonly align 4 [[A]]) #[[ATTR1:[0-9]+]]
; TUNIT-NEXT: ret i32 [[X]]
;
; CGSCC: Function Attrs: nofree nosync nounwind willreturn memory(argmem: read)
; CGSCC-LABEL: define {{[^@]+}}@foo
; CGSCC-SAME: (ptr nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[A:%.*]]) #[[ATTR1:[0-9]+]] {
; CGSCC-NEXT: [[X:%.*]] = call i32 @callee(ptr nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[A]]) #[[ATTR2:[0-9]+]]
; CGSCC-NEXT: ret i32 [[X]]
;
%X = call i32 @callee(i1 false, ptr %A) ; <i32> [#uses=1]
ret i32 %X
}
;.
; TUNIT: attributes #[[ATTR0]] = { nofree norecurse nosync nounwind willreturn memory(argmem: read) }
; TUNIT: attributes #[[ATTR1]] = { nofree nosync nounwind willreturn }
;.
; CGSCC: attributes #[[ATTR0]] = { nofree norecurse nosync nounwind willreturn memory(argmem: read) }
; CGSCC: attributes #[[ATTR1]] = { nofree nosync nounwind willreturn memory(argmem: read) }
; CGSCC: attributes #[[ATTR2]] = { willreturn }
;.
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