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TheRock/compiler/amd-llvm/llvm/test/Transforms/FunctionSpecialization/dead-gv-load.ll
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2026-09-02 16:34:47 -07:00

32 lines
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LLVM

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -passes=ipsccp --funcspec-min-function-size=1 -S < %s | FileCheck %s
@gv = internal global ptr null
define i8 @caller() {
; CHECK-LABEL: define i8 @caller() {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: [[CALL1:%.*]] = call i8 @callee.specialized.1(i32 1)
; CHECK-NEXT: [[CALL2:%.*]] = call i8 @callee.specialized.2(i32 0)
; CHECK-NEXT: ret i8 undef
;
entry:
%call1 = call i8 @callee(i32 1)
%call2 = call i8 @callee(i32 0)
ret i8 %call2
}
define internal i8 @callee(i32 %arg) {
entry:
%useless = icmp ne i32 %arg, 0
br label %loop
loop: ; preds = %loop, %entry
br label %loop
dead_bb: ; No predecessors!
%l1 = load ptr, ptr @gv, align 8
%l2 = load ptr, ptr %l1, align 8
ret i8 0
}