derek.holloway
7502bf64a4
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79 lines
2.7 KiB
LLVM
Executable File
79 lines
2.7 KiB
LLVM
Executable File
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
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; RUN: opt -S -passes='cgscc(inline),rpo-function-attrs' < %s | FileCheck %s
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; Check that invalid nofpclass attributes aren't added to the return
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; of called_in_unreachable_code. This would only occur due to stale
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; edges in LazyCallGraph. When the inliner prunes the unreachadle code
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; in calls_unreachable, the call graph edge to
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; called_in_unreachable_code remains.
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@global = external global i64
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define i32 @external_caller() {
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; CHECK-LABEL: define i32 @external_caller() {
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; CHECK-NEXT: [[ENTRY:.*:]]
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; CHECK-NEXT: ret i32 0
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;
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entry:
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%call20 = call i32 @calls_unreachable()
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ret i32 %call20
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}
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define internal i32 @calls_unreachable() {
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entry:
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br label %ret
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unreachable: ; No predecessors!
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%dead = call i64 @called_in_unreachable_code()
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br label %ret
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ret:
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ret i32 0
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}
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define internal i64 @called_in_unreachable_code() {
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; CHECK-LABEL: define internal i64 @called_in_unreachable_code() {
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; CHECK-NEXT: [[BB:.*:]]
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; CHECK-NEXT: [[ALLOCA:%.*]] = alloca i64, align 8
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; CHECK-NEXT: store i64 0, ptr @global, align 8
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; CHECK-NEXT: [[LOAD:%.*]] = load i64, ptr @global, align 8
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; CHECK-NEXT: [[ICMP:%.*]] = icmp sgt i64 [[LOAD]], 0
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; CHECK-NEXT: br i1 [[ICMP]], label %[[BB1:.*]], label %[[BB7:.*]]
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; CHECK: [[BB1]]:
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; CHECK-NEXT: [[LOAD2:%.*]] = load i64, ptr @global, align 8
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; CHECK-NEXT: [[ICMP3:%.*]] = icmp sgt i64 [[LOAD2]], 0
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; CHECK-NEXT: [[LOAD4:%.*]] = load i64, ptr @global, align 8
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; CHECK-NEXT: [[SUB:%.*]] = sub i64 0, [[LOAD4]]
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; CHECK-NEXT: [[LOAD5:%.*]] = load i64, ptr @global, align 8
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; CHECK-NEXT: [[ICMP6:%.*]] = icmp sgt i64 [[LOAD5]], 0
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; CHECK-NEXT: ret i64 0
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; CHECK: [[BB7]]:
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; CHECK-NEXT: [[LOAD8:%.*]] = load i64, ptr @global, align 8
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; CHECK-NEXT: [[ICMP9:%.*]] = icmp slt i64 [[LOAD8]], 0
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; CHECK-NEXT: [[LOAD10:%.*]] = load i64, ptr @global, align 8
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; CHECK-NEXT: ret i64 [[LOAD10]]
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;
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bb:
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%alloca = alloca i64, align 8
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store i64 0, ptr @global, align 8
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%load = load i64, ptr @global, align 8
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%icmp = icmp sgt i64 %load, 0
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br i1 %icmp, label %bb1, label %bb7
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bb1: ; preds = %bb
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%load2 = load i64, ptr @global, align 8
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%icmp3 = icmp sgt i64 %load2, 0
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%load4 = load i64, ptr @global, align 8
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%sub = sub i64 0, %load4
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%load5 = load i64, ptr @global, align 8
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%icmp6 = icmp sgt i64 %load5, 0
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ret i64 0
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bb7: ; preds = %bb
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%load8 = load i64, ptr @global, align 8
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%icmp9 = icmp slt i64 %load8, 0
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%load10 = load i64, ptr @global, align 8
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ret i64 %load10
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}
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