87 lines
2.6 KiB
LLVM
87 lines
2.6 KiB
LLVM
; RUN: opt -codegenprepare -S < %s | FileCheck %s
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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"
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target triple = "x86_64-apple-darwin10.0.0"
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; CHECK-LABEL: @test1(
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; objectsize should fold to a constant, which causes the branch to fold to an
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; uncond branch. Next, we fold the control flow alltogether.
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; rdar://8785296
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define i32 @test1(i8* %ptr) nounwind ssp noredzone align 2 {
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entry:
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%0 = tail call i64 @llvm.objectsize.i64(i8* %ptr, i1 false, i1 false)
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%1 = icmp ugt i64 %0, 3
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br i1 %1, label %T, label %trap
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; CHECK: entry:
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; CHECK-NOT: br label %
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trap: ; preds = %0, %entry
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tail call void @llvm.trap() noreturn nounwind
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unreachable
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T:
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; CHECK: ret i32 4
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ret i32 4
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}
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; CHECK-LABEL: @test_objectsize_null_flag(
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define i64 @test_objectsize_null_flag(i8* %ptr) {
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entry:
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; CHECK: ret i64 -1
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%0 = tail call i64 @llvm.objectsize.i64(i8* null, i1 false, i1 true)
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ret i64 %0
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}
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; CHECK-LABEL: @test_objectsize_null_flag_min(
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define i64 @test_objectsize_null_flag_min(i8* %ptr) {
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entry:
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; CHECK: ret i64 0
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%0 = tail call i64 @llvm.objectsize.i64(i8* null, i1 true, i1 true)
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ret i64 %0
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}
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; Test foldable null pointers because we evaluate them with non-exact modes in
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; CodeGenPrepare.
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; CHECK-LABEL: @test_objectsize_null_flag_noas0(
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define i64 @test_objectsize_null_flag_noas0() {
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entry:
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; CHECK: ret i64 -1
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%0 = tail call i64 @llvm.objectsize.i64.p1i8(i8 addrspace(1)* null, i1 false,
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i1 true)
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ret i64 %0
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}
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; CHECK-LABEL: @test_objectsize_null_flag_min_noas0(
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define i64 @test_objectsize_null_flag_min_noas0() {
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entry:
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; CHECK: ret i64 0
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%0 = tail call i64 @llvm.objectsize.i64.p1i8(i8 addrspace(1)* null, i1 true,
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i1 true)
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ret i64 %0
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}
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; CHECK-LABEL: @test_objectsize_null_known_flag_noas0
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define i64 @test_objectsize_null_known_flag_noas0() {
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entry:
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; CHECK: ret i64 -1
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%0 = tail call i64 @llvm.objectsize.i64.p1i8(i8 addrspace(1)* null, i1 false,
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i1 false)
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ret i64 %0
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}
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; CHECK-LABEL: @test_objectsize_null_known_flag_min_noas0
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define i64 @test_objectsize_null_known_flag_min_noas0() {
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entry:
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; CHECK: ret i64 0
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%0 = tail call i64 @llvm.objectsize.i64.p1i8(i8 addrspace(1)* null, i1 true,
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i1 false)
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ret i64 %0
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}
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declare i64 @llvm.objectsize.i64(i8*, i1, i1) nounwind readonly
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declare i64 @llvm.objectsize.i64.p1i8(i8 addrspace(1)*, i1, i1) nounwind readonly
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declare void @llvm.trap() nounwind
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