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| ; RUN: opt -lower-constant-intrinsics -S < %s | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
target triple = "x86_64-apple-darwin10.0.0"
declare i64 @llvm.objectsize.i64(i8*, i1, i1, i1) nounwind readonly
declare i64 @llvm.objectsize.i64.p1i8(i8 addrspace(1)*, i1, i1, i1) nounwind readonly
declare void @llvm.trap() nounwind
; CHECK-LABEL: @test1(
; objectsize should fold to a constant, which causes the branch to fold to an
; uncond branch.
define i32 @test1(i8* %ptr) nounwind ssp noredzone align 2 {
entry:
%0 = tail call i64 @llvm.objectsize.i64(i8* %ptr, i1 false, i1 false, i1 false)
%1 = icmp ugt i64 %0, 3
br i1 %1, label %T, label %trap
; CHECK: entry:
; CHECK-NOT: label %trap
trap: ; preds = %0, %entry
tail call void @llvm.trap() noreturn nounwind
unreachable
T:
; CHECK: ret i32 4
ret i32 4
}
; CHECK-LABEL: @test_objectsize_null_flag(
define i64 @test_objectsize_null_flag(i8* %ptr) {
entry:
; CHECK: ret i64 -1
%0 = tail call i64 @llvm.objectsize.i64(i8* null, i1 false, i1 true, i1 false)
ret i64 %0
}
; CHECK-LABEL: @test_objectsize_null_flag_min(
define i64 @test_objectsize_null_flag_min(i8* %ptr) {
entry:
; CHECK: ret i64 0
%0 = tail call i64 @llvm.objectsize.i64(i8* null, i1 true, i1 true, i1 false)
ret i64 %0
}
; Test foldable null pointers because we evaluate them with non-exact modes in
; CodeGenPrepare.
; CHECK-LABEL: @test_objectsize_null_flag_noas0(
define i64 @test_objectsize_null_flag_noas0() {
entry:
; CHECK: ret i64 -1
%0 = tail call i64 @llvm.objectsize.i64.p1i8(i8 addrspace(1)* null, i1 false,
i1 true, i1 false)
ret i64 %0
}
; CHECK-LABEL: @test_objectsize_null_flag_min_noas0(
define i64 @test_objectsize_null_flag_min_noas0() {
entry:
; CHECK: ret i64 0
%0 = tail call i64 @llvm.objectsize.i64.p1i8(i8 addrspace(1)* null, i1 true,
i1 true, i1 false)
ret i64 %0
}
; CHECK-LABEL: @test_objectsize_null_known_flag_noas0
define i64 @test_objectsize_null_known_flag_noas0() {
entry:
; CHECK: ret i64 -1
%0 = tail call i64 @llvm.objectsize.i64.p1i8(i8 addrspace(1)* null, i1 false,
i1 false, i1 false)
ret i64 %0
}
; CHECK-LABEL: @test_objectsize_null_known_flag_min_noas0
define i64 @test_objectsize_null_known_flag_min_noas0() {
entry:
; CHECK: ret i64 0
%0 = tail call i64 @llvm.objectsize.i64.p1i8(i8 addrspace(1)* null, i1 true,
i1 false, i1 false)
ret i64 %0
}
|