musttail.ll
2.35 KB
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --scrub-attributes
; RUN: opt -S -passes=attributor -aa-pipeline='basic-aa' -attributor-disable=false -attributor-max-iterations-verify -attributor-max-iterations=3 < %s | FileCheck %s
; PR36543
; Don't promote arguments of musttail callee
%T = type { i32, i32, i32, i32 }
define internal i32 @test(%T* %p) {
; CHECK-LABEL: define {{[^@]+}}@test
; CHECK-SAME: (%T* nocapture nofree readonly [[P:%.*]])
; CHECK-NEXT: [[A_GEP:%.*]] = getelementptr [[T:%.*]], %T* [[P]], i64 0, i32 3
; CHECK-NEXT: [[B_GEP:%.*]] = getelementptr [[T]], %T* [[P]], i64 0, i32 2
; CHECK-NEXT: [[A:%.*]] = load i32, i32* [[A_GEP]]
; CHECK-NEXT: [[B:%.*]] = load i32, i32* [[B_GEP]]
; CHECK-NEXT: [[V:%.*]] = add i32 [[A]], [[B]]
; CHECK-NEXT: ret i32 [[V]]
;
%a.gep = getelementptr %T, %T* %p, i64 0, i32 3
%b.gep = getelementptr %T, %T* %p, i64 0, i32 2
%a = load i32, i32* %a.gep
%b = load i32, i32* %b.gep
%v = add i32 %a, %b
ret i32 %v
}
define i32 @caller(%T* %p) {
; CHECK-LABEL: define {{[^@]+}}@caller
; CHECK-SAME: (%T* nocapture nofree readonly [[P:%.*]])
; CHECK-NEXT: [[V:%.*]] = musttail call i32 @test(%T* nocapture nofree readonly [[P]])
; CHECK-NEXT: ret i32 [[V]]
;
%v = musttail call i32 @test(%T* %p)
ret i32 %v
}
; Don't promote arguments of musttail caller
define i32 @foo(%T* %p, i32 %v) {
; CHECK-LABEL: define {{[^@]+}}@foo
; CHECK-SAME: (%T* nocapture nofree readnone [[P:%.*]], i32 [[V:%.*]])
; CHECK-NEXT: ret i32 0
;
ret i32 0
}
define internal i32 @test2(%T* %p, i32 %p2) {
; CHECK-LABEL: define {{[^@]+}}@test2
; CHECK-SAME: (%T* nocapture nofree readonly [[P:%.*]], i32 [[P2:%.*]])
; CHECK-NEXT: [[CA:%.*]] = musttail call i32 @foo(%T* undef, i32 undef)
; CHECK-NEXT: ret i32 [[CA]]
;
%a.gep = getelementptr %T, %T* %p, i64 0, i32 3
%b.gep = getelementptr %T, %T* %p, i64 0, i32 2
%a = load i32, i32* %a.gep
%b = load i32, i32* %b.gep
%v = add i32 %a, %b
%ca = musttail call i32 @foo(%T* undef, i32 %v)
ret i32 %ca
}
define i32 @caller2(%T* %g) {
; CHECK-LABEL: define {{[^@]+}}@caller2
; CHECK-SAME: (%T* nocapture nofree readonly [[G:%.*]])
; CHECK-NEXT: [[V:%.*]] = call i32 @test2(%T* nocapture nofree readonly undef, i32 undef)
; CHECK-NEXT: ret i32 0
;
%v = call i32 @test2(%T* %g, i32 0)
ret i32 %v
}