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TheRock/compiler/amd-llvm/llvm/test/Transforms/PhaseOrdering/varargs.ll
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

45 lines
1.5 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -mtriple=amdgcn-- -S -passes='lto<O2>' < %s | FileCheck %s
target triple = "amdgcn-amd-amdhsa"
; REQUIRES: amdgpu-registered-target
; We use the ExpandVariadics pass to lower variadic functions so they can be
; inlined.
define i32 @foo() {
; CHECK-LABEL: define i32 @foo(
; CHECK-SAME: ) local_unnamed_addr #[[ATTR0:[0-9]+]] {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: ret i32 6
;
entry:
%call = tail call i32 (i32, ...) @vararg(i32 poison, i32 noundef 1, i32 noundef 2, i32 noundef 3)
ret i32 %call
}
define internal i32 @vararg(i32 %first, ...) {
entry:
%vlist.alloca = alloca ptr, align 8, addrspace(5)
%vlist = addrspacecast ptr addrspace(5) %vlist.alloca to ptr
call void @llvm.va_start.p0(ptr %vlist)
%vlist.promoted = load ptr, ptr %vlist, align 8
%argp.a = getelementptr inbounds i8, ptr %vlist.promoted, i64 4
store ptr %argp.a, ptr %vlist, align 8
%a = load i32, ptr %vlist.promoted, align 4
%argp.b = getelementptr inbounds i8, ptr %vlist.promoted, i64 8
store ptr %argp.b, ptr %vlist, align 8
%b = load i32, ptr %argp.a, align 4
%sum = add nsw i32 %b, %a
%argp.c = getelementptr inbounds i8, ptr %vlist.promoted, i64 12
store ptr %argp.c, ptr %vlist, align 8
%c = load i32, ptr %argp.b, align 4
%ret = add nsw i32 %c, %sum
call void @llvm.va_end.p0(ptr %vlist)
ret i32 %ret
}
declare void @llvm.va_start.p0(ptr)
declare void @llvm.va_end.p0(ptr)